[management, proxy] Add prompt-cache token and cost accounting to agent network usage (#6900)

Co-authored-by: braginini <bangvalo@gmail.com>

.github/workflows/agent-network-e2e.yml

@@ -5,6 +5,13 @@ on:
   schedule:
     - cron: "0 3 * * *"
   workflow_dispatch:
+    inputs:
+      bedrock_model:
+        description: >-
+          Bedrock inference-profile id to drive the matrix with, exactly as
+          AWS issues it. Leave empty for the Sonnet 4.6 default.
+        required: false
+        default: ""
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -62,6 +69,8 @@ jobs:
           CLOUDFLARE_TOKEN: ${{ secrets.E2E_CLOUDFLARE_TOKEN }}
           AWS_BEARER_TOKEN_BEDROCK: ${{ secrets.E2E_AWS_BEARER_TOKEN_BEDROCK }}
           AWS_REGION: ${{ secrets.E2E_AWS_REGION }}
+          # Bedrock model override: dispatch input wins, then the repo variable, else the test default.
+          AWS_BEDROCK_MODEL: ${{ inputs.bedrock_model || vars.E2E_AWS_BEDROCK_MODEL }}
           # Vertex (Anthropic-on-Vertex): SA + project required; region defaults
           # to "global", model to a pinned claude snapshot.
           GOOGLE_VERTEX_SA_BASE64: ${{ secrets.E2E_GOOGLE_VERTEX_SA_BASE64 }}

e2e/agentnetwork/chat_test.go

@@ -9,12 +9,220 @@ import (
 	"testing"
 	"time"
 
+	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
 
 	"github.com/netbirdio/netbird/e2e/harness"
 	"github.com/netbirdio/netbird/shared/management/http/api"
 )
 
+// per1k is a model's published USD rates per 1k tokens. read is the prompt-cache read rate
+// (OpenAI: the cached-input discount rate); write is the cache-creation rate where one exists.
+type per1k struct{ in, out, read, write float64 }
+
+// publishedPer1k hardcodes the vendors' PUBLISHED rates for the models the live matrix can drive,
+// keyed by the normalized model id the proxy stamps. Deliberately independent of the proxy's
+// pricing table so a wrong embedded rate or a broken normalization fails the run.
+var publishedPer1k = map[string]per1k{
+	"gpt-4o-mini":                 {0.00015, 0.0006, 0.000075, 0},
+	"gpt-4o":                      {0.0025, 0.01, 0.00125, 0},
+	"claude-haiku-4-5":            {0.001, 0.005, 0.0001, 0.00125},
+	"claude-sonnet-4-5":           {0.003, 0.015, 0.0003, 0.00375},
+	"claude-sonnet-4-6":           {0.003, 0.015, 0.0003, 0.00375},
+	"kimi-k3":                     {0.003, 0.015, 0.0003, 0.003}, // no published write rate: bills at the input rate
+	"anthropic.claude-haiku-4-5":  {0.001, 0.005, 0.0001, 0.00125},
+	"anthropic.claude-sonnet-4-5": {0.003, 0.015, 0.0003, 0.00375},
+	"anthropic.claude-sonnet-4-6": {0.003, 0.015, 0.0003, 0.00375},
+}
+
+// rawCostVerificationSQL is the operator-facing double-check, run straight against the management
+// sqlite store: recompute each usage row's expected total and cache cost from its own persisted
+// token buckets and hardcoded published rates. OpenAI counts cached tokens as a subset of input;
+// Anthropic-shape providers count cache buckets additively.
+const rawCostVerificationSQL = `
+WITH rates(model, in_rate, out_rate, read_rate, write_rate) AS (
+  VALUES
+    ('gpt-4o-mini',                 0.00015, 0.0006, 0.000075, 0.0),
+    ('gpt-4o',                      0.0025,  0.01,   0.00125,  0.0),
+    ('claude-haiku-4-5',            0.001,   0.005,  0.0001,   0.00125),
+    ('claude-sonnet-4-5',           0.003,   0.015,  0.0003,   0.00375),
+    ('claude-sonnet-4-6',           0.003,   0.015,  0.0003,   0.00375),
+    ('kimi-k3',                     0.003,   0.015,  0.0003,   0.003),
+    ('anthropic.claude-haiku-4-5',  0.001,   0.005,  0.0001,   0.00125),
+    ('anthropic.claude-sonnet-4-5', 0.003,   0.015,  0.0003,   0.00375),
+    ('anthropic.claude-sonnet-4-6', 0.003,   0.015,  0.0003,   0.00375)
+)
+SELECT
+  u.provider,
+  u.model,
+  u.input_tokens,
+  u.output_tokens,
+  u.cached_input_tokens,
+  u.cache_creation_tokens,
+  u.input_cost_usd,
+  u.cached_input_cost_usd,
+  u.cache_creation_cost_usd,
+  u.output_cost_usd,
+  -- No cost_usd / cache_cost_usd columns are stored: both are derived from the
+  -- four per-bucket columns above, exactly as the API renders them.
+  (u.input_cost_usd + u.cached_input_cost_usd + u.cache_creation_cost_usd + u.output_cost_usd) AS cost_usd,
+  (u.cached_input_cost_usd + u.cache_creation_cost_usd) AS cache_cost_usd,
+  CASE WHEN u.provider = 'openai' THEN
+    (u.input_tokens - MIN(u.cached_input_tokens, u.input_tokens))*r.in_rate/1000.0
+  ELSE
+    u.input_tokens*r.in_rate/1000.0
+  END AS expected_input,
+  CASE WHEN u.provider = 'openai' THEN
+    MIN(u.cached_input_tokens, u.input_tokens)*r.read_rate/1000.0
+  ELSE
+    u.cached_input_tokens*r.read_rate/1000.0
+  END AS expected_cached_input,
+  CASE WHEN u.provider = 'openai' THEN
+    0.0
+  ELSE
+    u.cache_creation_tokens*r.write_rate/1000.0
+  END AS expected_cache_creation,
+  u.output_tokens*r.out_rate/1000.0 AS expected_output,
+  CASE WHEN u.provider = 'openai' THEN
+    (u.input_tokens - MIN(u.cached_input_tokens, u.input_tokens))*r.in_rate/1000.0
+      + MIN(u.cached_input_tokens, u.input_tokens)*r.read_rate/1000.0
+      + u.output_tokens*r.out_rate/1000.0
+  ELSE
+    u.input_tokens*r.in_rate/1000.0 + u.cached_input_tokens*r.read_rate/1000.0
+      + u.cache_creation_tokens*r.write_rate/1000.0 + u.output_tokens*r.out_rate/1000.0
+  END AS expected_total,
+  CASE WHEN u.provider = 'openai' THEN
+    MIN(u.cached_input_tokens, u.input_tokens)*r.read_rate/1000.0
+  ELSE
+    u.cached_input_tokens*r.read_rate/1000.0 + u.cache_creation_tokens*r.write_rate/1000.0
+  END AS expected_cache
+FROM agent_network_request_usage u
+JOIN rates r ON r.model = u.model
+ORDER BY u.timestamp`
+
+// verifyUsageRowsSQL re-checks every persisted usage row directly in the management sqlite store,
+// bypassing the API path — the same audit an operator can run on a production store.db.
+func verifyUsageRowsSQL(t *testing.T, srv *harness.Combined) {
+	t.Helper()
+
+	dbPath, err := srv.SnapshotStoreDB(t.TempDir())
+	require.NoError(t, err, "snapshot management sqlite store")
+
+	db, err := gorm.Open(sqlite.Open(dbPath), &gorm.Config{})
+	require.NoError(t, err, "open store snapshot")
+	sqlDB, err := db.DB()
+	require.NoError(t, err)
+	defer func() { _ = sqlDB.Close() }()
+
+	rows, err := db.Raw(rawCostVerificationSQL).Rows()
+	require.NoError(t, err, "run raw cost verification query")
+	defer func() { _ = rows.Close() }()
+
+	verified := 0
+	for rows.Next() {
+		var provider, model string
+		var inTok, outTok, readTok, writeTok int64
+		var inCost, cachedInCost, cacheCreateCost, outCost, cost, cacheCost float64
+		var wantInput, wantCachedInput, wantCacheCreation, wantOutput, wantTotal, wantCache float64
+		require.NoError(t, rows.Scan(&provider, &model, &inTok, &outTok, &readTok, &writeTok,
+			&inCost, &cachedInCost, &cacheCreateCost, &outCost, &cost, &cacheCost,
+			&wantInput, &wantCachedInput, &wantCacheCreation, &wantOutput, &wantTotal, &wantCache), "scan usage row")
+		t.Logf("[sql] %s/%s: in=%d out=%d cache_read=%d cache_write=%d stored in/cached/create/out=$%.6f/$%.6f/$%.6f/$%.6f total=$%.6f cache=$%.6f expected total=$%.6f cache=$%.6f",
+			provider, model, inTok, outTok, readTok, writeTok,
+			inCost, cachedInCost, cacheCreateCost, outCost, cost, cacheCost, wantTotal, wantCache)
+		assert.InDeltaf(t, wantInput, inCost, 1e-6, "stored input_cost_usd for %s/%s must match the published-rate recompute", provider, model)
+		assert.InDeltaf(t, wantCachedInput, cachedInCost, 1e-6, "stored cached_input_cost_usd for %s/%s must match the published-rate recompute", provider, model)
+		assert.InDeltaf(t, wantCacheCreation, cacheCreateCost, 1e-6, "stored cache_creation_cost_usd for %s/%s must match the published-rate recompute", provider, model)
+		assert.InDeltaf(t, wantOutput, outCost, 1e-6, "stored output_cost_usd for %s/%s must match the published-rate recompute", provider, model)
+		assert.InDeltaf(t, wantTotal, cost, 1e-6, "derived cost_usd for %s/%s must match the published-rate recompute", provider, model)
+		assert.InDeltaf(t, wantCache, cacheCost, 1e-6, "derived cache_cost_usd for %s/%s must match the published-rate recompute", provider, model)
+		assert.InDeltaf(t, inCost+cachedInCost+cacheCreateCost+outCost, cost, 1e-9,
+			"stored buckets must sum to the derived cost_usd for %s/%s", provider, model)
+		verified++
+	}
+	require.NoError(t, rows.Err(), "iterate usage rows")
+	require.Positive(t, verified, "raw SQL check must cover at least one usage row")
+	t.Logf("[sql] verified %d usage rows in store.db against published rates", verified)
+
+	gwRows, err := db.Raw(`SELECT model,
+	  (input_cost_usd + cached_input_cost_usd + cache_creation_cost_usd + output_cost_usd) AS cost_usd
+	  FROM agent_network_request_usage WHERE model LIKE '%/%'`).Rows()
+	require.NoError(t, err, "query gateway-prefixed usage rows")
+	defer func() { _ = gwRows.Close() }()
+	for gwRows.Next() {
+		var model string
+		var cost float64
+		require.NoError(t, gwRows.Scan(&model, &cost), "scan gateway usage row")
+		t.Logf("[sql] gateway %s: stored=$%.6f (must be 0 — deliberately unpriced)", model, cost)
+		assert.Zerof(t, cost, "gateway-prefixed model %q must store cost 0, never a guessed rate", model)
+	}
+	require.NoError(t, gwRows.Err(), "iterate gateway usage rows")
+}
+
+// validateAccessLogCost recomputes a live access-log row's expected total and cache cost from the
+// published per-1k rates and the row's persisted token buckets, and asserts both stored values.
+// Gateway-prefixed model ids the proxy deliberately does not price must store cost 0.
+func validateAccessLogCost(t *testing.T, pc providerCase, row api.AgentNetworkAccessLog) {
+	t.Helper()
+	model := catalogModel(pc)
+	provider := ""
+	if row.Provider != nil {
+		provider = *row.Provider
+	}
+	t.Logf("[cost] %s: provider=%s model=%s in=%d out=%d total=%d cache_read=%d cache_write=%d cost=$%.6f cache_cost=$%.6f",
+		pc.name, provider, model, row.InputTokens, row.OutputTokens, row.TotalTokens,
+		row.CachedInputTokens, row.CacheCreationTokens, row.CostUsd, row.CacheCostUsd)
+
+	rates, known := publishedPer1k[model]
+	if !known {
+		if strings.Contains(model, "/") {
+			assert.Zerof(t, row.CostUsd, "gateway-prefixed model %q is not priced so the cost meter must skip (cost 0)", model)
+			return
+		}
+		t.Logf("[cost] %s: no published rate on file for model %q (env-overridden?); skipping cost validation", pc.name, model)
+		return
+	}
+
+	// input_tokens may legitimately be 0: Moonshot/Kimi reports fully cached prompts under the cache
+	// buckets only. Output and total must always be present on a priced row.
+	require.Positive(t, row.OutputTokens, "priced row must carry output tokens")
+	require.Positive(t, row.TotalTokens, "priced row must carry total tokens")
+
+	var wantInput, wantCachedInput, wantCacheCreation float64
+	if provider == "openai" {
+		cached := min(row.CachedInputTokens, row.InputTokens) // cached is a subset of input
+		wantInput = float64(row.InputTokens-cached) / 1000 * rates.in
+		wantCachedInput = float64(cached) / 1000 * rates.read
+		// OpenAI has no cache-write bucket; wantCacheCreation stays 0.
+	} else {
+		// Anthropic / Bedrock shape: cache buckets are additive to input_tokens.
+		wantInput = float64(row.InputTokens) / 1000 * rates.in
+		wantCachedInput = float64(row.CachedInputTokens) / 1000 * rates.read
+		wantCacheCreation = float64(row.CacheCreationTokens) / 1000 * rates.write
+	}
+	wantOutput := float64(row.OutputTokens) / 1000 * rates.out
+	wantCache := wantCachedInput + wantCacheCreation
+	wantTotal := wantInput + wantCache + wantOutput
+
+	t.Logf("[cost] %s: expecting input=$%.6f cached_input=$%.6f cache_creation=$%.6f output=$%.6f total=$%.6f cache=$%.6f from published rates",
+		pc.name, wantInput, wantCachedInput, wantCacheCreation, wantOutput, wantTotal, wantCache)
+	assert.InDeltaf(t, wantInput, row.InputCostUsd, 1e-6, "stored input_cost_usd for %s (%s)", pc.name, model)
+	assert.InDeltaf(t, wantCachedInput, row.CachedInputCostUsd, 1e-6, "stored cached_input_cost_usd for %s (%s)", pc.name, model)
+	assert.InDeltaf(t, wantCacheCreation, row.CacheCreationCostUsd, 1e-6, "stored cache_creation_cost_usd for %s (%s)", pc.name, model)
+	assert.InDeltaf(t, wantOutput, row.OutputCostUsd, 1e-6, "stored output_cost_usd for %s (%s)", pc.name, model)
+	assert.InDeltaf(t, wantTotal, row.CostUsd, 1e-6, "derived cost_usd for %s (%s)", pc.name, model)
+	assert.InDeltaf(t, wantCache, row.CacheCostUsd, 1e-6, "derived cache_cost_usd for %s (%s)", pc.name, model)
+
+	// The aggregates must be exactly the sum of the stored components, not an
+	// independently-computed figure that could drift from the breakdown.
+	assert.InDeltaf(t, row.InputCostUsd+row.CachedInputCostUsd+row.CacheCreationCostUsd+row.OutputCostUsd,
+		row.CostUsd, 1e-9, "stored buckets must sum to the derived cost_usd for %s (%s)", pc.name, model)
+	assert.InDeltaf(t, row.CachedInputCostUsd+row.CacheCreationCostUsd,
+		row.CacheCostUsd, 1e-9, "stored cache buckets must sum to the derived cache_cost_usd for %s (%s)", pc.name, model)
+}
+
 // providerCase is one entry in the live provider matrix. The same scenario runs
 // for every available provider; availability is keyed off env vars so the suite
 // covers whatever credentials are present (source ~/.llm-keys locally / set the
@@ -116,12 +324,12 @@ func availableProviders() []providerCase {
 		if region == "" {
 			region = "eu-central-1"
 		}
-		// A valid Bedrock inference-profile id (region prefix + date + version),
-		// overridable per account. `global.` profiles can be invoked from any
-		// region; set AWS_BEDROCK_MODEL to match the enabled profile for the token.
+		// A valid Bedrock inference-profile id, overridable per account (AWS_BEDROCK_MODEL, also the
+		// workflow's bedrock_model dispatch input). `global.` profiles work from any region. Defaults to
+		// Sonnet 4.6, whose id convention dropped the -YYYYMMDD-v1:0 suffix that Haiku 4.5 still carries.
 		model := os.Getenv("AWS_BEDROCK_MODEL")
 		if model == "" {
-			model = "global.anthropic.claude-haiku-4-5-20251001-v1:0"
+			model = "global.anthropic.claude-sonnet-4-6"
 		}
 		ps = append(ps, providerCase{name: "bedrock", catalogID: "bedrock_api", upstream: "https://bedrock-runtime." + region + ".amazonaws.com", apiKey: k, model: model, kind: harness.WireBedrock})
 	}
@@ -257,6 +465,10 @@ func TestProvidersMatrix(t *testing.T) {
 			// session id and confirm the marker propagated end-to-end.
 			sessionID := "e2e-session-" + pc.name
 
+			// A long-form prompt so completions carry realistic token counts for cost validation;
+			// max_tokens in the harness bodies (2048) lets the full answer through.
+			const matrixPrompt = "explain GitHub workflow in 1000 words"
+
 			// Retry briefly to absorb tunnel/DNS jitter on the first call.
 			var code int
 			var body string
@@ -267,11 +479,11 @@ func TestProvidersMatrix(t *testing.T) {
 				var cerr error
 				switch pc.kind {
 				case harness.WireVertex:
-					c, b, cerr = cl.Vertex(ctx, settings.Endpoint, proxyIP, pc.project, pc.region, pc.model, "Reply with exactly: pong", sessionID)
+					c, b, cerr = cl.Vertex(ctx, settings.Endpoint, proxyIP, pc.project, pc.region, pc.model, matrixPrompt, sessionID)
 				case harness.WireBedrock:
-					c, b, cerr = cl.Bedrock(ctx, settings.Endpoint, proxyIP, pc.model, "Reply with exactly: pong", sessionID)
+					c, b, cerr = cl.Bedrock(ctx, settings.Endpoint, proxyIP, pc.model, matrixPrompt, sessionID)
 				default:
-					c, b, cerr = cl.ChatPrefixed(ctx, settings.Endpoint, proxyIP, pc.pathPrefix, pc.kind, pc.model, "Reply with exactly: pong", sessionID)
+					c, b, cerr = cl.ChatPrefixed(ctx, settings.Endpoint, proxyIP, pc.pathPrefix, pc.kind, pc.model, matrixPrompt, sessionID)
 				}
 				if cerr == nil {
 					code, body = c, b
@@ -290,6 +502,7 @@ func TestProvidersMatrix(t *testing.T) {
 
 			// The session id sent as x-session-id must round-trip into the
 			// access-log row for this provider.
+			var row api.AgentNetworkAccessLog
 			require.Eventually(t, func() bool {
 				logs, lerr := srv.ListAccessLogs(ctx)
 				if lerr != nil {
@@ -297,11 +510,15 @@ func TestProvidersMatrix(t *testing.T) {
 				}
 				for _, r := range logs.Data {
 					if r.SessionId != nil && *r.SessionId == sessionID {
+						row = r
 						return true
 					}
 				}
 				return false
 			}, 30*time.Second, 2*time.Second, "session id %q must be recorded in an access-log row for %s", sessionID, pc.name)
+
+			// Stored total and cache cost must match the published rates applied to the row's buckets.
+			validateAccessLogCost(t, pc, row)
 		})
 	}
 
@@ -322,4 +539,7 @@ func TestProvidersMatrix(t *testing.T) {
 		}
 		return false
 	}, 60*time.Second, 3*time.Second, "consumption must be recorded with positive token counts after live traffic")
+
+	// Final raw-SQL audit: bypass the API and re-verify every persisted usage row in the store.
+	verifyUsageRowsSQL(t, srv)
 }

e2e/harness/client.go

@@ -256,7 +256,7 @@ func (cl *Client) ChatPrefixed(ctx context.Context, endpoint, proxyIP, pathPrefi
 	case WireMessages:
 		path = "/v1/messages"
 		headers = []string{"anthropic-version: 2023-06-01"}
-		body = fmt.Sprintf(`{"model":%q,"max_tokens":64,"messages":[{"role":"user","content":%q}]}`, model, prompt)
+		body = fmt.Sprintf(`{"model":%q,"max_tokens":2048,"messages":[{"role":"user","content":%q}]}`, model, prompt)
 	default:
 		path = "/v1/chat/completions"
 		body = fmt.Sprintf(`{"model":%q,"messages":[{"role":"user","content":%q}]}`, model, prompt)
@@ -271,7 +271,7 @@ func (cl *Client) ChatPrefixed(ctx context.Context, endpoint, proxyIP, pathPrefi
 // is sent as the universal x-session-id header the proxy records.
 func (cl *Client) Vertex(ctx context.Context, endpoint, proxyIP, project, region, model, prompt, sessionID string) (int, string, error) {
 	path := fmt.Sprintf("/v1/projects/%s/locations/%s/publishers/anthropic/models/%s:rawPredict", project, region, model)
-	body := fmt.Sprintf(`{"anthropic_version":"vertex-2023-10-16","max_tokens":64,"messages":[{"role":"user","content":%q}]}`, prompt)
+	body := fmt.Sprintf(`{"anthropic_version":"vertex-2023-10-16","max_tokens":2048,"messages":[{"role":"user","content":%q}]}`, prompt)
 	return cl.post(ctx, endpoint, proxyIP, path, body, withSessionID(nil, sessionID))
 }
 
@@ -282,7 +282,7 @@ func (cl *Client) Vertex(ctx context.Context, endpoint, proxyIP, project, region
 // header the proxy records.
 func (cl *Client) Bedrock(ctx context.Context, endpoint, proxyIP, model, prompt, sessionID string) (int, string, error) {
 	path := "/model/" + model + "/invoke"
-	body := fmt.Sprintf(`{"anthropic_version":"bedrock-2023-05-31","max_tokens":64,"messages":[{"role":"user","content":%q}]}`, prompt)
+	body := fmt.Sprintf(`{"anthropic_version":"bedrock-2023-05-31","max_tokens":2048,"messages":[{"role":"user","content":%q}]}`, prompt)
 	return cl.post(ctx, endpoint, proxyIP, path, body, withSessionID(nil, sessionID))
 }
 
@@ -341,7 +341,7 @@ func (cl *Client) Terminate(ctx context.Context) error {
 	return cl.container.Terminate(ctx)
 }
 
-// containerLogs reads up to 256 KiB of a container's logs for diagnostics.
+// containerLogs reads up to 4 MiB of a container's logs for diagnostics — enough for a whole provider-matrix run.
 func containerLogs(ctx context.Context, c testcontainers.Container) string {
 	if c == nil {
 		return ""
@@ -351,6 +351,6 @@ func containerLogs(ctx context.Context, c testcontainers.Container) string {
 		return fmt.Sprintf("<logs error: %v>", err)
 	}
 	defer r.Close()
-	b, _ := io.ReadAll(io.LimitReader(r, 256<<10))
+	b, _ := io.ReadAll(io.LimitReader(r, 4<<20))
 	return string(b)
 }

e2e/harness/combined.go

@@ -221,6 +221,29 @@ func (c *Combined) CreateProxyTokenCLI(ctx context.Context, name string) (string
 	return "", fmt.Errorf("token not found in CLI output: %s", string(out))
 }
 
+// SnapshotStoreDB copies the management sqlite store (with WAL/SHM sidecars) out of the bind-mounted
+// data dir into dstDir and returns the copy's path; reading a copy avoids locking against live writes.
+func (c *Combined) SnapshotStoreDB(dstDir string) (string, error) {
+	src := filepath.Join(c.workDir, "data", "store.db")
+	if _, err := os.Stat(src); err != nil {
+		return "", fmt.Errorf("management store not found at %s: %w", src, err)
+	}
+	dst := filepath.Join(dstDir, "store.db")
+	for _, suffix := range []string{"", "-wal", "-shm"} {
+		data, err := os.ReadFile(src + suffix)
+		if err != nil {
+			if os.IsNotExist(err) && suffix != "" {
+				continue // sidecar only exists in WAL mode
+			}
+			return "", fmt.Errorf("read %s: %w", src+suffix, err)
+		}
+		if err := os.WriteFile(dst+suffix, data, 0o600); err != nil {
+			return "", fmt.Errorf("write %s: %w", dst+suffix, err)
+		}
+	}
+	return dst, nil
+}
+
 // Logs returns the combined server container logs, for diagnostics.
 func (c *Combined) Logs(ctx context.Context) string {
 	return containerLogs(ctx, c.container)

management/internals/modules/agentnetwork/accesslog_ingest.go

@@ -27,7 +27,12 @@ const (
 	metaKeyInputTokens         = "llm.input_tokens"          //nolint:gosec // metadata key name, not a credential
 	metaKeyOutputTokens        = "llm.output_tokens"         //nolint:gosec // metadata key name, not a credential
 	metaKeyTotalTokens         = "llm.total_tokens"          //nolint:gosec // metadata key name, not a credential
-	metaKeyCostUSDTotal       = "cost.usd_total"
+	metaKeyCachedInputTokens   = "llm.cached_input_tokens"   //nolint:gosec // metadata key name, not a credential
+	metaKeyCacheCreationTokens = "llm.cache_creation_tokens" //nolint:gosec // metadata key name, not a credential
+	metaKeyCostUSDInput        = "cost.usd_input"
+	metaKeyCostUSDCachedInput  = "cost.usd_cached_input"
+	metaKeyCostUSDCacheCreate  = "cost.usd_cache_creation"
+	metaKeyCostUSDOutput       = "cost.usd_output"
 	metaKeyStream              = "llm.stream"
 	metaKeySessionID           = "llm.session_id"
 	metaKeyAuthorisingGroups   = "llm.authorising_groups"
@@ -118,7 +123,12 @@ func flattenAccessLog(e *accesslogs.AccessLogEntry) (*types.AgentNetworkAccessLo
 		InputTokens:          parseMetaInt(meta, metaKeyInputTokens),
 		OutputTokens:         parseMetaInt(meta, metaKeyOutputTokens),
 		TotalTokens:          parseMetaInt(meta, metaKeyTotalTokens),
-		CostUSD:            parseMetaFloat(meta, metaKeyCostUSDTotal),
+		CachedInputTokens:    parseMetaInt(meta, metaKeyCachedInputTokens),
+		CacheCreationTokens:  parseMetaInt(meta, metaKeyCacheCreationTokens),
+		InputCostUSD:         parseMetaFloat(meta, metaKeyCostUSDInput),
+		CachedInputCostUSD:   parseMetaFloat(meta, metaKeyCostUSDCachedInput),
+		CacheCreationCostUSD: parseMetaFloat(meta, metaKeyCostUSDCacheCreate),
+		OutputCostUSD:        parseMetaFloat(meta, metaKeyCostUSDOutput),
 		Stream:               parseMetaBool(meta, metaKeyStream),
 		RequestPrompt:        meta[metaKeyRequestPrompt],
 		ResponseCompletion:   meta[metaKeyResponseCompletion],
@@ -151,7 +161,12 @@ func usageFromFlattenedLog(e *types.AgentNetworkAccessLog, groups []types.AgentN
 		InputTokens:          e.InputTokens,
 		OutputTokens:         e.OutputTokens,
 		TotalTokens:          e.TotalTokens,
-		CostUSD:            e.CostUSD,
+		CachedInputTokens:    e.CachedInputTokens,
+		CacheCreationTokens:  e.CacheCreationTokens,
+		InputCostUSD:         e.InputCostUSD,
+		CachedInputCostUSD:   e.CachedInputCostUSD,
+		CacheCreationCostUSD: e.CacheCreationCostUSD,
+		OutputCostUSD:        e.OutputCostUSD,
 	}
 
 	usageGroups := make([]types.AgentNetworkUsageGroup, 0, len(groups))

management/internals/modules/agentnetwork/accesslog_ingest_realstore_test.go

@@ -34,8 +34,13 @@ func newIngestTestEntry() *accesslogs.AccessLogEntry {
 			metaKeySessionID:           "sess-1",
 			metaKeyInputTokens:         "100",
 			metaKeyOutputTokens:        "50",
-			metaKeyTotalTokens:        "150",
-			metaKeyCostUSDTotal:       "0.0123",
+			metaKeyTotalTokens:         "1174",
+			metaKeyCachedInputTokens:   "256",
+			metaKeyCacheCreationTokens: "768",
+			metaKeyCostUSDInput:        "0.0071",
+			metaKeyCostUSDCachedInput:  "0.0009",
+			metaKeyCostUSDCacheCreate:  "0.0020",
+			metaKeyCostUSDOutput:       "0.0023",
 			metaKeyStream:              "true",
 			metaKeyRequestPrompt:       "hello",
 			metaKeyResponseCompletion:  "world",
@@ -65,7 +70,19 @@ func TestIngestAccessLog_RealStore_LogCollectionOff(t *testing.T) {
 	require.Len(t, usage, 1, "usage row must be written even with log collection off")
 	assert.Equal(t, int64(100), usage[0].InputTokens, "input tokens must round-trip from metadata")
 	assert.Equal(t, int64(50), usage[0].OutputTokens, "output tokens must round-trip from metadata")
-	assert.InDelta(t, 0.0123, usage[0].CostUSD, 1e-9, "cost must round-trip from metadata")
+	assert.Equal(t, int64(256), usage[0].CachedInputTokens, "cache-read tokens must round-trip from metadata")
+	assert.Equal(t, int64(768), usage[0].CacheCreationTokens, "cache-write tokens must round-trip from metadata")
+	// The per-bucket breakdown is the only cost state stored, and must survive
+	// the write/read cycle as real columns — usage rows are the only cost
+	// record for accounts with log collection off, so a dropped column here
+	// loses the split permanently.
+	assert.InDelta(t, 0.0071, usage[0].InputCostUSD, 1e-9, "input cost must round-trip from metadata")
+	assert.InDelta(t, 0.0009, usage[0].CachedInputCostUSD, 1e-9, "cache-read cost must round-trip from metadata")
+	assert.InDelta(t, 0.0020, usage[0].CacheCreationCostUSD, 1e-9, "cache-write cost must round-trip from metadata")
+	assert.InDelta(t, 0.0023, usage[0].OutputCostUSD, 1e-9, "output cost must round-trip from metadata")
+	// Aggregates are derived from the stored columns, never stored themselves.
+	assert.InDelta(t, 0.0123, usage[0].TotalCostUSD(), 1e-9, "total is derived from the stored buckets")
+	assert.InDelta(t, 0.0029, usage[0].CacheCostUSD(), 1e-9, "cache cost is derived from the two cache buckets")
 
 	logs, _, err := s.GetAgentNetworkAccessLogs(ctx, store.LockingStrengthNone, testAccountID, types.AgentNetworkAccessLogFilter{})
 	require.NoError(t, err)
@@ -96,6 +113,14 @@ func TestIngestAccessLog_RealStore_LogCollectionOn(t *testing.T) {
 	require.Equal(t, int64(1), total, "exactly one access-log row expected")
 	require.Len(t, logs, 1, "full access-log row must be written when log collection is on")
 	assert.Equal(t, "gpt-5.4", logs[0].Model, "model must flatten from metadata")
+	assert.Equal(t, int64(256), logs[0].CachedInputTokens, "cache-read tokens must flatten from metadata")
+	assert.Equal(t, int64(768), logs[0].CacheCreationTokens, "cache-write tokens must flatten from metadata")
+	assert.InDelta(t, 0.0029, logs[0].CacheCostUSD(), 1e-9, "cache cost is derived from the two cache buckets")
+	assert.InDelta(t, 0.0123, logs[0].TotalCostUSD(), 1e-9, "total is derived from the stored buckets")
+	assert.InDelta(t, 0.0071, logs[0].InputCostUSD, 1e-9, "input cost must flatten from metadata")
+	assert.InDelta(t, 0.0009, logs[0].CachedInputCostUSD, 1e-9, "cache-read cost must flatten from metadata")
+	assert.InDelta(t, 0.0020, logs[0].CacheCreationCostUSD, 1e-9, "cache-write cost must flatten from metadata")
+	assert.InDelta(t, 0.0023, logs[0].OutputCostUSD, 1e-9, "output cost must flatten from metadata")
 	assert.Equal(t, "hello", logs[0].RequestPrompt, "prompt must be retained when log collection is on")
 	assert.Equal(t, "world", logs[0].ResponseCompletion, "completion must be retained when log collection is on")
 	assert.True(t, logs[0].Stream, "stream flag must flatten from metadata")

management/internals/modules/agentnetwork/accesslog_sessions_realstore_test.go

@@ -38,7 +38,7 @@ func accessLogRow(id, sessionID string, ts time.Time, opts ...func(*types.AgentN
 		InputTokens:        100,
 		OutputTokens:       50,
 		TotalTokens:        150,
-		CostUSD:            0.01,
+		InputCostUSD:       0.01,
 	}
 	for _, o := range opts {
 		o(e)
@@ -74,7 +74,7 @@ func withTokens(in, out, total int64, cost float64) func(*types.AgentNetworkAcce
 		e.InputTokens = in
 		e.OutputTokens = out
 		e.TotalTokens = total
-		e.CostUSD = cost
+		e.InputCostUSD = cost
 	}
 }
 
@@ -155,7 +155,7 @@ func TestAccessLogSessions_FoldAndAggregate(t *testing.T) {
 	assert.Equal(t, int64(310), a.InputTokens, "input tokens summed")
 	assert.Equal(t, int64(135), a.OutputTokens, "output tokens summed")
 	assert.Equal(t, int64(445), a.TotalTokens, "total tokens summed")
-	assert.InDelta(t, 0.031, a.CostUSD, 1e-9, "cost summed")
+	assert.InDelta(t, 0.031, a.TotalCostUSD(), 1e-9, "cost summed")
 	assert.Equal(t, "deny", a.Decision, "any deny makes the session a deny")
 	assert.ElementsMatch(t, []string{"openai", "anthropic"}, a.Providers, "distinct providers")
 	assert.ElementsMatch(t, []string{"gpt-5.4", "claude-haiku-4-5"}, a.Models, "distinct models")

management/internals/modules/agentnetwork/types/accesslog.go

@@ -41,7 +41,23 @@ type AgentNetworkAccessLog struct {
 	InputTokens        int64
 	OutputTokens       int64
 	TotalTokens        int64
-	CostUSD            float64
+	// Prompt-cache buckets: read + write token counts.
+	CachedInputTokens   int64
+	CacheCreationTokens int64
+	// Per-bucket cost breakdown — one column per token bucket the provider
+	// bills separately. These four are the only cost state stored: the total
+	// and the cache portion are derived on read (TotalCostUSD / CacheCostUSD)
+	// rather than stored alongside, so a stored aggregate can never drift out
+	// of step with the components it summarises.
+	//
+	// default:0 matters on upgrade: these columns are ALTER TABLE ADD COLUMN
+	// on an existing table, and without it every historical row holds NULL —
+	// which a raw SUM()/scan into float64 can't read. The default backfills
+	// them as 0, so pre-upgrade rows report an unknown split, not an error.
+	InputCostUSD         float64 `gorm:"not null;default:0"`
+	CachedInputCostUSD   float64 `gorm:"not null;default:0"`
+	CacheCreationCostUSD float64 `gorm:"not null;default:0"`
+	OutputCostUSD        float64 `gorm:"not null;default:0"`
 	Stream               bool
 
 	// Prompt capture. Only populated when prompt collection is enabled
@@ -60,6 +76,24 @@ type AgentNetworkAccessLog struct {
 // the reverse-proxy AccessLogEntry table.
 func (AgentNetworkAccessLog) TableName() string { return "agent_network_access_log" }
 
+// CostUSDSQLExpr is the SQL sum of the per-bucket cost columns — the total cost
+// of a row. Used wherever a query has to sort or aggregate on total cost now
+// that no cost_usd column is stored. Plain arithmetic over NOT NULL columns, so
+// it stays portable across SQLite and Postgres.
+const CostUSDSQLExpr = "(input_cost_usd + cached_input_cost_usd + cache_creation_cost_usd + output_cost_usd)"
+
+// TotalCostUSD is the request's total cost: the sum of the four per-bucket
+// costs. Derived rather than stored so it cannot disagree with the breakdown.
+func (a *AgentNetworkAccessLog) TotalCostUSD() float64 {
+	return a.InputCostUSD + a.CachedInputCostUSD + a.CacheCreationCostUSD + a.OutputCostUSD
+}
+
+// CacheCostUSD is the portion of the total billed for prompt-cache buckets:
+// cache reads plus cache writes.
+func (a *AgentNetworkAccessLog) CacheCostUSD() float64 {
+	return a.CachedInputCostUSD + a.CacheCreationCostUSD
+}
+
 // ToAPIResponse renders the flattened entry as the API representation.
 func (a *AgentNetworkAccessLog) ToAPIResponse() api.AgentNetworkAccessLog {
 	out := api.AgentNetworkAccessLog{
@@ -71,7 +105,14 @@ func (a *AgentNetworkAccessLog) ToAPIResponse() api.AgentNetworkAccessLog {
 		InputTokens:          a.InputTokens,
 		OutputTokens:         a.OutputTokens,
 		TotalTokens:          a.TotalTokens,
-		CostUsd:      a.CostUSD,
+		CachedInputTokens:    a.CachedInputTokens,
+		CacheCreationTokens:  a.CacheCreationTokens,
+		InputCostUsd:         a.InputCostUSD,
+		CachedInputCostUsd:   a.CachedInputCostUSD,
+		CacheCreationCostUsd: a.CacheCreationCostUSD,
+		OutputCostUsd:        a.OutputCostUSD,
+		CostUsd:              a.TotalCostUSD(),
+		CacheCostUsd:         a.CacheCostUSD(),
 		Stream:               &a.Stream,
 	}
 
@@ -121,13 +162,29 @@ type AgentNetworkAccessLogSession struct {
 	InputTokens          int64
 	OutputTokens         int64
 	TotalTokens          int64
-	CostUSD      float64
+	CachedInputTokens    int64
+	CacheCreationTokens  int64
+	InputCostUSD         float64
+	CachedInputCostUSD   float64
+	CacheCreationCostUSD float64
+	OutputCostUSD        float64
 	Providers            []string // distinct vendors seen in the session
 	Models               []string // distinct models seen in the session
 	Decision             string   // "deny" if any entry was denied, else "allow"
 	Entries              []*AgentNetworkAccessLog
 }
 
+// TotalCostUSD is the session's total cost: the sum of the four per-bucket
+// costs accumulated across its entries.
+func (sess *AgentNetworkAccessLogSession) TotalCostUSD() float64 {
+	return sess.InputCostUSD + sess.CachedInputCostUSD + sess.CacheCreationCostUSD + sess.OutputCostUSD
+}
+
+// CacheCostUSD is the session's prompt-cache spend: cache reads plus writes.
+func (sess *AgentNetworkAccessLogSession) CacheCostUSD() float64 {
+	return sess.CachedInputCostUSD + sess.CacheCreationCostUSD
+}
+
 // sessionKey is the grouping key for an entry: its session id, or — when the
 // client sent none — its own row id, so session-less requests each form their
 // own singleton group. Must match the SQL group key
@@ -205,7 +262,12 @@ func (sess *AgentNetworkAccessLogSession) foldEntry(sk *sessionSeen, e *AgentNet
 	sess.InputTokens += e.InputTokens
 	sess.OutputTokens += e.OutputTokens
 	sess.TotalTokens += e.TotalTokens
-	sess.CostUSD += e.CostUSD
+	sess.CachedInputTokens += e.CachedInputTokens
+	sess.CacheCreationTokens += e.CacheCreationTokens
+	sess.InputCostUSD += e.InputCostUSD
+	sess.CachedInputCostUSD += e.CachedInputCostUSD
+	sess.CacheCreationCostUSD += e.CacheCreationCostUSD
+	sess.OutputCostUSD += e.OutputCostUSD
 	if e.Timestamp.Before(sess.StartedAt) {
 		sess.StartedAt = e.Timestamp
 	}
@@ -254,7 +316,14 @@ func (sess *AgentNetworkAccessLogSession) ToAPIResponse() api.AgentNetworkAccess
 		InputTokens:          sess.InputTokens,
 		OutputTokens:         sess.OutputTokens,
 		TotalTokens:          sess.TotalTokens,
-		CostUsd:      sess.CostUSD,
+		CachedInputTokens:    sess.CachedInputTokens,
+		CacheCreationTokens:  sess.CacheCreationTokens,
+		InputCostUsd:         sess.InputCostUSD,
+		CachedInputCostUsd:   sess.CachedInputCostUSD,
+		CacheCreationCostUsd: sess.CacheCreationCostUSD,
+		OutputCostUsd:        sess.OutputCostUSD,
+		CostUsd:              sess.TotalCostUSD(),
+		CacheCostUsd:         sess.CacheCostUSD(),
 		Decision:             sess.Decision,
 		Entries:              entries,
 	}

management/internals/modules/agentnetwork/types/accesslogfilter.go

@@ -54,7 +54,7 @@ var accessLogSortFields = map[string]string{
 	"provider":     "provider",
 	"status_code":  "status_code",
 	"duration":     "duration",
-	"cost_usd":     "cost_usd",
+	"cost_usd":     CostUSDSQLExpr,
 	"total_tokens": "total_tokens",
 	"user_id":      "user_id",
 	"decision":     "decision",
@@ -70,7 +70,7 @@ var accessLogSortFields = map[string]string{
 var sessionSortExprs = map[string]string{ //nolint:gosec // G101 false positive: "total_tokens" sort key, not a credential
 	"timestamp":     "MAX(timestamp)",
 	"started_at":    "MIN(timestamp)",
-	"cost_usd":      "SUM(cost_usd)",
+	"cost_usd":      "SUM" + CostUSDSQLExpr,
 	"total_tokens":  "SUM(total_tokens)",
 	"duration":      "SUM(duration)",
 	"request_count": "COUNT(*)",

management/internals/modules/agentnetwork/types/cost_test.go

@@ -0,0 +1,124 @@
+package types
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+// costRow builds an access-log entry carrying only a cost breakdown — the rest
+// of the row is irrelevant to the summation identities under test.
+func costRow(id, session string, ts time.Time, in, cachedIn, cacheCreate, out float64) *AgentNetworkAccessLog {
+	return &AgentNetworkAccessLog{
+		ID:                   id,
+		SessionID:            session,
+		Timestamp:            ts,
+		InputCostUSD:         in,
+		CachedInputCostUSD:   cachedIn,
+		CacheCreationCostUSD: cacheCreate,
+		OutputCostUSD:        out,
+	}
+}
+
+// TestAPIResponse_CostComponentsSumToAggregates is the contract a client adding
+// up an API response depends on: within a single rendered object, the four
+// per-bucket fields sum to cost_usd, and the two cache fields sum to
+// cache_cost_usd. Uses rates that are not exactly representable in binary
+// floating point, so the identity is checked against real arithmetic rather
+// than round numbers.
+func TestAPIResponse_CostComponentsSumToAggregates(t *testing.T) {
+	row := costRow("r1", "s1", time.Now(), 0.000768, 0.0002304, 0.00192, 0.003)
+
+	api := row.ToAPIResponse()
+	assert.InDelta(t, api.InputCostUsd+api.CachedInputCostUsd+api.CacheCreationCostUsd+api.OutputCostUsd,
+		api.CostUsd, 1e-12, "rendered buckets must sum to the rendered cost_usd")
+	assert.InDelta(t, api.CachedInputCostUsd+api.CacheCreationCostUsd, api.CacheCostUsd, 1e-12,
+		"rendered cache buckets must sum to the rendered cache_cost_usd")
+	assert.InDelta(t, 0.0059184, api.CostUsd, 1e-12, "total is the exact sum, not a separately rounded figure")
+	assert.InDelta(t, 0.0021504, api.CacheCostUsd, 1e-12, "cache cost is the exact sum of the two cache buckets")
+}
+
+// TestSessionSummary_SumsMatchSummedEntries proves a session summary equals the
+// sum of the entries it renders: a client that adds up the entries itself must
+// land on the same number the summary reports, per bucket and in total.
+func TestSessionSummary_SumsMatchSummedEntries(t *testing.T) {
+	base := time.Date(2026, 5, 5, 10, 0, 0, 0, time.UTC)
+	entries := []*AgentNetworkAccessLog{
+		costRow("r1", "s1", base, 0.000768, 0.0002304, 0.00192, 0.003),
+		costRow("r2", "s1", base.Add(time.Minute), 0.000625, 0.0009375, 0, 0.005),
+		costRow("r3", "s1", base.Add(2*time.Minute), 0.0000016, 0, 0, 0.0000032),
+	}
+
+	sessions := FoldAccessLogSessions([]string{"s1"}, entries)
+	require.Len(t, sessions, 1)
+	sess := sessions[0].ToAPIResponse()
+
+	var wantInput, wantCachedInput, wantCacheCreation, wantOutput float64
+	for _, e := range entries {
+		wantInput += e.InputCostUSD
+		wantCachedInput += e.CachedInputCostUSD
+		wantCacheCreation += e.CacheCreationCostUSD
+		wantOutput += e.OutputCostUSD
+	}
+
+	assert.InDelta(t, wantInput, sess.InputCostUsd, 1e-12, "session input cost is the sum of its entries")
+	assert.InDelta(t, wantCachedInput, sess.CachedInputCostUsd, 1e-12, "session cache-read cost is the sum of its entries")
+	assert.InDelta(t, wantCacheCreation, sess.CacheCreationCostUsd, 1e-12, "session cache-write cost is the sum of its entries")
+	assert.InDelta(t, wantOutput, sess.OutputCostUsd, 1e-12, "session output cost is the sum of its entries")
+	assert.InDelta(t, wantInput+wantCachedInput+wantCacheCreation+wantOutput, sess.CostUsd, 1e-12,
+		"session total equals the summed entry buckets")
+
+	// Summing the rendered entries must give the same answer as reading the
+	// summary — the property a UI relies on when it totals a table itself.
+	var fromEntries float64
+	for _, e := range sess.Entries {
+		fromEntries += e.CostUsd
+	}
+	assert.InDelta(t, sess.CostUsd, fromEntries, 1e-12, "summary total must match the summed rendered entries")
+
+	// The sub-microdollar row must still contribute; it would vanish under
+	// 6-decimal quantisation.
+	assert.Greater(t, sess.InputCostUsd, 0.001393, "small-cost rows must not be quantised away")
+}
+
+// TestUsageBuckets_SumsMatchSummedRows proves the same identity one level up:
+// a usage bucket equals the sum of the ledger rows folded into it, and the
+// buckets together equal the whole range.
+func TestUsageBuckets_SumsMatchSummedRows(t *testing.T) {
+	day1 := time.Date(2026, 5, 5, 9, 0, 0, 0, time.UTC)
+	day2 := time.Date(2026, 5, 6, 9, 0, 0, 0, time.UTC)
+	rows := []*AgentNetworkUsage{
+		{ID: "u1", Timestamp: day1, InputCostUSD: 0.000768, CachedInputCostUSD: 0.0002304, CacheCreationCostUSD: 0.00192, OutputCostUSD: 0.003},
+		{ID: "u2", Timestamp: day1.Add(time.Hour), InputCostUSD: 0.000625, CachedInputCostUSD: 0.0009375, OutputCostUSD: 0.005},
+		{ID: "u3", Timestamp: day2, InputCostUSD: 0.0000016, OutputCostUSD: 0.0000032},
+	}
+
+	buckets := AggregateUsageByGranularity(rows, UsageGranularityDay)
+	require.Len(t, buckets, 2, "two distinct days expected")
+
+	var total, cache float64
+	for _, b := range buckets {
+		api := b.ToAPIResponse()
+		assert.InDelta(t, api.InputCostUsd+api.CachedInputCostUsd+api.CacheCreationCostUsd+api.OutputCostUsd,
+			api.CostUsd, 1e-12, "each bucket's components must sum to its cost_usd")
+		total += api.CostUsd
+		cache += api.CacheCostUsd
+	}
+
+	var wantTotal, wantCache float64
+	for _, r := range rows {
+		wantTotal += r.TotalCostUSD()
+		wantCache += r.CacheCostUSD()
+	}
+	assert.InDelta(t, wantTotal, total, 1e-12, "buckets must sum to the total across all ledger rows")
+	assert.InDelta(t, wantCache, cache, 1e-12, "buckets must sum to the cache spend across all ledger rows")
+
+	// A month bucket over the same rows must total identically — regrouping
+	// changes the partition, never the sum.
+	monthly := AggregateUsageByGranularity(rows, UsageGranularityMonth)
+	require.Len(t, monthly, 1)
+	assert.InDelta(t, wantTotal, monthly[0].ToAPIResponse().CostUsd, 1e-12,
+		"re-bucketing at a different granularity must preserve the total")
+}

management/internals/modules/agentnetwork/types/usage.go

@@ -25,7 +25,18 @@ type AgentNetworkUsage struct {
 	InputTokens        int64
 	OutputTokens       int64
 	TotalTokens        int64
-	CostUSD            float64
+	// Prompt-cache buckets: read + write token counts.
+	CachedInputTokens   int64
+	CacheCreationTokens int64
+	// Per-bucket cost breakdown, mirroring AgentNetworkAccessLog — the only
+	// cost state stored; total and cache portion are derived on read. Kept on
+	// the usage ledger too so spend can be attributed per bucket even for
+	// accounts with log collection turned off. See AgentNetworkAccessLog for
+	// why the columns carry a zero default.
+	InputCostUSD         float64 `gorm:"not null;default:0"`
+	CachedInputCostUSD   float64 `gorm:"not null;default:0"`
+	CacheCreationCostUSD float64 `gorm:"not null;default:0"`
+	OutputCostUSD        float64 `gorm:"not null;default:0"`
 	CreatedAt            time.Time
 }
 
@@ -34,6 +45,17 @@ type AgentNetworkUsage struct {
 // agent_network_usage table in a shared database.
 func (AgentNetworkUsage) TableName() string { return "agent_network_request_usage" }
 
+// TotalCostUSD is the request's total cost: the sum of the four per-bucket
+// costs. Derived rather than stored so it cannot disagree with the breakdown.
+func (u *AgentNetworkUsage) TotalCostUSD() float64 {
+	return u.InputCostUSD + u.CachedInputCostUSD + u.CacheCreationCostUSD + u.OutputCostUSD
+}
+
+// CacheCostUSD is the portion of the total billed for prompt-cache buckets.
+func (u *AgentNetworkUsage) CacheCostUSD() float64 {
+	return u.CachedInputCostUSD + u.CacheCreationCostUSD
+}
+
 // AgentNetworkUsageGroup is the normalised many-to-many row linking a usage
 // record to one authorising group, mirroring AgentNetworkAccessLogGroup so the
 // usage overview can filter by group with a `group_id IN (...)` join.

management/internals/modules/agentnetwork/types/usageoverview.go

@@ -37,7 +37,24 @@ type AgentNetworkUsageBucket struct {
 	InputTokens          int64
 	OutputTokens         int64
 	TotalTokens          int64
-	CostUSD      float64
+	CachedInputTokens    int64
+	CacheCreationTokens  int64
+	InputCostUSD         float64
+	CachedInputCostUSD   float64
+	CacheCreationCostUSD float64
+	OutputCostUSD        float64
+}
+
+// TotalCostUSD is the bucket's total spend: the sum of the four per-bucket
+// costs. Derived rather than accumulated separately so it cannot disagree with
+// the components.
+func (b *AgentNetworkUsageBucket) TotalCostUSD() float64 {
+	return b.InputCostUSD + b.CachedInputCostUSD + b.CacheCreationCostUSD + b.OutputCostUSD
+}
+
+// CacheCostUSD is the bucket's prompt-cache spend: cache reads plus writes.
+func (b *AgentNetworkUsageBucket) CacheCostUSD() float64 {
+	return b.CachedInputCostUSD + b.CacheCreationCostUSD
 }
 
 // ToAPIResponse renders the bucket as the API representation.
@@ -47,7 +64,14 @@ func (b *AgentNetworkUsageBucket) ToAPIResponse() api.AgentNetworkUsageBucket {
 		InputTokens:          b.InputTokens,
 		OutputTokens:         b.OutputTokens,
 		TotalTokens:          b.TotalTokens,
-		CostUsd:      b.CostUSD,
+		CachedInputTokens:    b.CachedInputTokens,
+		CacheCreationTokens:  b.CacheCreationTokens,
+		InputCostUsd:         b.InputCostUSD,
+		CachedInputCostUsd:   b.CachedInputCostUSD,
+		CacheCreationCostUsd: b.CacheCreationCostUSD,
+		OutputCostUsd:        b.OutputCostUSD,
+		CostUsd:              b.TotalCostUSD(),
+		CacheCostUsd:         b.CacheCostUSD(),
 	}
 }
 
@@ -84,7 +108,12 @@ func AggregateUsageByGranularity(rows []*AgentNetworkUsage, g UsageGranularity)
 		b.InputTokens += r.InputTokens
 		b.OutputTokens += r.OutputTokens
 		b.TotalTokens += r.TotalTokens
-		b.CostUSD += r.CostUSD
+		b.CachedInputTokens += r.CachedInputTokens
+		b.CacheCreationTokens += r.CacheCreationTokens
+		b.InputCostUSD += r.InputCostUSD
+		b.CachedInputCostUSD += r.CachedInputCostUSD
+		b.CacheCreationCostUSD += r.CacheCreationCostUSD
+		b.OutputCostUSD += r.OutputCostUSD
 	}
 
 	out := make([]*AgentNetworkUsageBucket, 0, len(byPeriod))

management/server/migration/migration.go

@@ -683,3 +683,81 @@ func BackfillPublicIDs[T any](ctx context.Context, db *gorm.DB) error {
 	log.WithContext(ctx).Infof("Backfill of empty public_id in table %s completed", tableName)
 	return nil
 }
+
+// FoldCostAggregatesIntoBuckets migrates a per-request cost table from the old
+// "stored aggregate" shape (cost_usd + cache_cost_usd columns) to the per-bucket
+// breakdown, where the total and cache portion are derived on read instead.
+//
+// The fold preserves both aggregates exactly for historical rows: the cache
+// total moves into cached_input_cost_usd and the remainder into
+// input_cost_usd, so a row's derived total and cache cost still match what it
+// reported before the upgrade. The finer split is genuinely unknown for those
+// rows — the old schema never recorded a read/write or input/output division —
+// so it is lumped rather than guessed; only rows written after the upgrade
+// carry a true four-way split.
+//
+// Dropping the columns before folding would zero every historical row's cost,
+// so the update runs first and the drop only happens once it succeeds. A table
+// with no cost_usd column has already been migrated (or was created fresh) and
+// is skipped.
+func FoldCostAggregatesIntoBuckets[T any](ctx context.Context, db *gorm.DB) error {
+	var model T
+
+	if !db.Migrator().HasTable(&model) {
+		log.WithContext(ctx).Debugf("table for %T does not exist, no cost-bucket migration needed", model)
+		return nil
+	}
+	if !db.Migrator().HasColumn(&model, "cost_usd") {
+		log.WithContext(ctx).Debugf("table for %T has no cost_usd column, cost buckets already migrated", model)
+		return nil
+	}
+
+	stmt := &gorm.Statement{DB: db}
+	if err := stmt.Parse(&model); err != nil {
+		return fmt.Errorf("parse model schema: %w", err)
+	}
+	tableName := stmt.Schema.Table
+
+	// COALESCE guards rows whose new columns were added as NULL by an earlier
+	// AutoMigrate run that predates the NOT NULL default.
+	hasCacheColumn := db.Migrator().HasColumn(&model, "cache_cost_usd")
+	cacheExpr := "0"
+	if hasCacheColumn {
+		cacheExpr = "COALESCE(cache_cost_usd, 0)"
+	}
+
+	if err := db.Transaction(func(tx *gorm.DB) error {
+		// Only touch rows that carry a legacy total and no breakdown yet, so
+		// the migration is idempotent and never overwrites a true split.
+		update := fmt.Sprintf(`UPDATE %s
+			SET input_cost_usd = COALESCE(cost_usd, 0) - %s,
+			    cached_input_cost_usd = %s,
+			    cache_creation_cost_usd = 0,
+			    output_cost_usd = 0
+			WHERE COALESCE(cost_usd, 0) <> 0
+			  AND COALESCE(input_cost_usd, 0) = 0
+			  AND COALESCE(cached_input_cost_usd, 0) = 0
+			  AND COALESCE(cache_creation_cost_usd, 0) = 0
+			  AND COALESCE(output_cost_usd, 0) = 0`, tableName, cacheExpr, cacheExpr)
+		res := tx.Exec(update)
+		if res.Error != nil {
+			return fmt.Errorf("fold legacy cost aggregates in %s: %w", tableName, res.Error)
+		}
+		log.WithContext(ctx).Infof("folded legacy cost aggregates into per-bucket columns for %d rows in table %s", res.RowsAffected, tableName)
+
+		if err := tx.Migrator().DropColumn(&model, "cost_usd"); err != nil {
+			return fmt.Errorf("drop cost_usd from %s: %w", tableName, err)
+		}
+		if hasCacheColumn {
+			if err := tx.Migrator().DropColumn(&model, "cache_cost_usd"); err != nil {
+				return fmt.Errorf("drop cache_cost_usd from %s: %w", tableName, err)
+			}
+		}
+		return nil
+	}); err != nil {
+		return err
+	}
+
+	log.WithContext(ctx).Infof("migration of stored cost aggregates to per-bucket columns in table %s completed", tableName)
+	return nil
+}

management/server/migration/migration_test.go

@@ -16,6 +16,7 @@ import (
 	"gorm.io/driver/sqlite"
 	"gorm.io/gorm"
 
+	agentNetworkTypes "github.com/netbirdio/netbird/management/internals/modules/agentnetwork/types"
 	"github.com/netbirdio/netbird/management/server/migration"
 	nbpeer "github.com/netbirdio/netbird/management/server/peer"
 	"github.com/netbirdio/netbird/management/server/testutil"
@@ -639,3 +640,99 @@ func TestCleanupOrphanedResources_SkipsWhenForeignKeyExists(t *testing.T) {
 	db.Model(&testChildWithFK{}).Count(&count)
 	assert.Equal(t, int64(2), count, "Both rows should survive — migration must skip when FK constraint exists")
 }
+
+// legacyCostRow is the pre-breakdown shape of the usage table: cost was stored
+// as a total plus a cache portion, with no per-bucket columns. Used to build a
+// realistic pre-upgrade table for the fold migration to run against.
+type legacyCostRow struct {
+	ID           string `gorm:"primaryKey"`
+	AccountID    string
+	Model        string
+	CostUSD      float64
+	CacheCostUSD float64
+}
+
+func (legacyCostRow) TableName() string { return "agent_network_request_usage" }
+
+// TestFoldCostAggregatesIntoBuckets_PreservesHistoricalCost covers the upgrade
+// path: a table written under the old schema must come out with its per-row
+// total and cache cost unchanged, because dropping cost_usd without folding it
+// forward would silently zero every historical row's spend.
+func TestFoldCostAggregatesIntoBuckets_PreservesHistoricalCost(t *testing.T) {
+	ctx := context.Background()
+	db := setupDatabase(t)
+	// setupDatabase hands back a process-shared database, so start from a clean
+	// table rather than inheriting rows from another test.
+	require.NoError(t, db.Migrator().DropTable(&agentNetworkTypes.AgentNetworkUsage{}))
+
+	require.NoError(t, db.AutoMigrate(&legacyCostRow{}), "legacy table must be created")
+	require.NoError(t, db.Create(&legacyCostRow{
+		ID: "u1", AccountID: "acct-1", Model: "claude-sonnet-4-6", CostUSD: 0.0123, CacheCostUSD: 0.0029,
+	}).Error)
+	require.NoError(t, db.Create(&legacyCostRow{
+		ID: "u2", AccountID: "acct-1", Model: "gpt-4o", CostUSD: 0.5, CacheCostUSD: 0,
+	}).Error)
+	// A zero-cost row (denied / unpriced request) must stay zero, not be touched.
+	require.NoError(t, db.Create(&legacyCostRow{ID: "u3", AccountID: "acct-1", Model: "gw/unpriced"}).Error)
+
+	// AutoMigrate adds the per-bucket columns alongside the legacy ones, exactly
+	// as a real upgrade does before the post-auto migrations run.
+	require.NoError(t, db.AutoMigrate(&agentNetworkTypes.AgentNetworkUsage{}), "new columns must be added")
+
+	require.NoError(t, migration.FoldCostAggregatesIntoBuckets[agentNetworkTypes.AgentNetworkUsage](ctx, db))
+
+	assert.False(t, db.Migrator().HasColumn(&agentNetworkTypes.AgentNetworkUsage{}, "cost_usd"),
+		"legacy cost_usd column must be dropped once folded")
+	assert.False(t, db.Migrator().HasColumn(&agentNetworkTypes.AgentNetworkUsage{}, "cache_cost_usd"),
+		"legacy cache_cost_usd column must be dropped once folded")
+
+	var rows []*agentNetworkTypes.AgentNetworkUsage
+	require.NoError(t, db.Order("id").Find(&rows).Error)
+	require.Len(t, rows, 3)
+
+	// u1: total and cache portion both preserved; the read/write and
+	// input/output splits are unknowable for a legacy row, so the cache total
+	// lands on cached_input and the remainder on input.
+	assert.InDelta(t, 0.0123, rows[0].TotalCostUSD(), 1e-9, "historical total must survive the fold")
+	assert.InDelta(t, 0.0029, rows[0].CacheCostUSD(), 1e-9, "historical cache cost must survive the fold")
+	assert.InDelta(t, 0.0094, rows[0].InputCostUSD, 1e-9, "non-cache remainder lands on input")
+	assert.InDelta(t, 0.0029, rows[0].CachedInputCostUSD, 1e-9, "legacy cache total lands on cached input")
+	assert.Zero(t, rows[0].CacheCreationCostUSD, "legacy rows carry no read/write split to recover")
+	assert.Zero(t, rows[0].OutputCostUSD, "legacy rows carry no input/output split to recover")
+
+	// u2: no cache spend — the whole total is the non-cache remainder.
+	assert.InDelta(t, 0.5, rows[1].TotalCostUSD(), 1e-9, "cache-free historical total must survive")
+	assert.Zero(t, rows[1].CacheCostUSD(), "a cache-free row must stay cache-free")
+
+	// u3: zero stays zero rather than being rewritten.
+	assert.Zero(t, rows[2].TotalCostUSD(), "an unpriced row must remain unpriced")
+}
+
+// TestFoldCostAggregatesIntoBuckets_SkipsAlreadyMigrated proves the migration is
+// safe to re-run: with no legacy column present it is a no-op that leaves a
+// true four-way split untouched.
+func TestFoldCostAggregatesIntoBuckets_SkipsAlreadyMigrated(t *testing.T) {
+	ctx := context.Background()
+	db := setupDatabase(t)
+	require.NoError(t, db.Migrator().DropTable(&agentNetworkTypes.AgentNetworkUsage{}))
+
+	require.NoError(t, db.AutoMigrate(&agentNetworkTypes.AgentNetworkUsage{}))
+	// Timestamp must be set explicitly: a zero time.Time serialises as
+	// '0000-00-00 00:00:00', which MySQL rejects under strict mode.
+	require.NoError(t, db.Create(&agentNetworkTypes.AgentNetworkUsage{
+		ID: "u1", AccountID: "acct-1", Model: "claude-sonnet-4-6",
+		Timestamp:    time.Date(2026, 5, 5, 9, 0, 0, 0, time.UTC),
+		InputCostUSD: 0.001, CachedInputCostUSD: 0.002, CacheCreationCostUSD: 0.003, OutputCostUSD: 0.004,
+	}).Error)
+
+	require.NoError(t, migration.FoldCostAggregatesIntoBuckets[agentNetworkTypes.AgentNetworkUsage](ctx, db),
+		"running against an already-migrated table must be a no-op, not an error")
+
+	var row agentNetworkTypes.AgentNetworkUsage
+	require.NoError(t, db.First(&row, "id = ?", "u1").Error)
+	assert.InDelta(t, 0.001, row.InputCostUSD, 1e-9, "a true split must not be rewritten")
+	assert.InDelta(t, 0.002, row.CachedInputCostUSD, 1e-9)
+	assert.InDelta(t, 0.003, row.CacheCreationCostUSD, 1e-9)
+	assert.InDelta(t, 0.004, row.OutputCostUSD, 1e-9)
+	assert.InDelta(t, 0.01, row.TotalCostUSD(), 1e-9, "derived total sums the four buckets")
+}

management/server/store/sql_store_agentnetwork.go

@@ -71,7 +71,7 @@ func (s *SqlStore) GetAgentNetworkMetrics(ctx context.Context) (AgentNetworkMetr
 	usageRow := db.Model(&agentNetworkTypes.AgentNetworkUsage{}).
 		Select("COALESCE(SUM(input_tokens), 0) AS input_tokens, " +
 			"COALESCE(SUM(output_tokens), 0) AS output_tokens, " +
-			"COALESCE(SUM(cost_usd), 0) AS cost_usd").Row()
+			"COALESCE(SUM" + agentNetworkTypes.CostUSDSQLExpr + ", 0) AS cost_usd").Row()
 	if err := usageRow.Scan(&m.InputTokens, &m.OutputTokens, &m.CostUSD); err != nil {
 		return AgentNetworkMetrics{}, fmt.Errorf("scan agent network usage metrics: %w", err)
 	}

management/server/store/sql_store_agentnetwork_accesslog_test.go

@@ -37,7 +37,7 @@ func TestAgentNetworkUsage_RealStore_RoundTrip(t *testing.T) {
 		InputTokens:        1200,
 		OutputTokens:       640,
 		TotalTokens:        1840,
-		CostUSD:            0.0231,
+		InputCostUSD:       0.0231,
 	}
 	usageGroups := []agentNetworkTypes.AgentNetworkUsageGroup{
 		{UsageID: usage.ID, GroupID: "grp-eng", AccountID: accountID},
@@ -71,7 +71,7 @@ func TestAgentNetworkUsage_RealStore_RoundTrip(t *testing.T) {
 		InputTokens:  1200,
 		OutputTokens: 640,
 		TotalTokens:  1840,
-		CostUSD:      0.0231,
+		InputCostUSD: 0.0231,
 	}
 	entryGroups := []agentNetworkTypes.AgentNetworkAccessLogGroup{
 		{LogID: entry.ID, GroupID: "grp-eng", AccountID: accountID},
@@ -127,7 +127,7 @@ func TestAgentNetworkUsageOverview_DailyAggregation(t *testing.T) {
 	mk := func(id string, ts time.Time, model string, in, out int64, cost float64) *agentNetworkTypes.AgentNetworkUsage {
 		return &agentNetworkTypes.AgentNetworkUsage{
 			ID: id, AccountID: accountID, Timestamp: ts, Model: model,
-			InputTokens: in, OutputTokens: out, TotalTokens: in + out, CostUSD: cost,
+			InputTokens: in, OutputTokens: out, TotalTokens: in + out, InputCostUSD: cost,
 		}
 	}
 	require.NoError(t, s.CreateAgentNetworkUsage(ctx, mk("u1", day1, "gpt-4o", 100, 50, 0.10), nil))
@@ -143,7 +143,7 @@ func TestAgentNetworkUsageOverview_DailyAggregation(t *testing.T) {
 	assert.Equal(t, "2026-05-05", buckets[0].PeriodStart, "oldest-first ordering")
 	assert.Equal(t, int64(300), buckets[0].InputTokens, "same-day input tokens summed")
 	assert.Equal(t, int64(130), buckets[0].OutputTokens)
-	assert.InDelta(t, 0.30, buckets[0].CostUSD, 1e-9, "same-day cost summed")
+	assert.InDelta(t, 0.30, buckets[0].TotalCostUSD(), 1e-9, "same-day cost summed")
 	assert.Equal(t, "2026-05-06", buckets[1].PeriodStart)
 	assert.Equal(t, int64(15), buckets[1].TotalTokens)
 
@@ -174,7 +174,7 @@ func TestAgentNetworkAccessLogSessions_RealStore(t *testing.T) {
 			ID: id, AccountID: accountID, ServiceID: "svc", Timestamp: ts,
 			UserID: user, StatusCode: 200, Provider: provider, Model: model,
 			SessionID: session, Decision: decision,
-			InputTokens: 100, OutputTokens: 50, TotalTokens: 150, CostUSD: cost,
+			InputTokens: 100, OutputTokens: 50, TotalTokens: 150, InputCostUSD: cost,
 		}
 	}
 
@@ -207,7 +207,7 @@ func TestAgentNetworkAccessLogSessions_RealStore(t *testing.T) {
 	s1 := sessions[2]
 	assert.Equal(t, 2, s1.RequestCount, "s1 has two requests")
 	assert.Equal(t, int64(300), s1.TotalTokens, "tokens summed across the session")
-	assert.InDelta(t, 0.30, s1.CostUSD, 1e-9, "cost summed across the session")
+	assert.InDelta(t, 0.30, s1.TotalCostUSD(), 1e-9, "cost summed across the session")
 	assert.Equal(t, "alice", s1.UserID)
 	assert.Equal(t, "allow", s1.Decision)
 	// SQLite hands times back in time.Local; normalise to UTC so the instant is

management/server/store/store.go

@@ -650,6 +650,14 @@ func getMigrationsPostAuto(ctx context.Context) []migrationFunc {
 		func(db *gorm.DB) error {
 			return migration.DropIndex[proxy.Proxy](ctx, db, "idx_proxy_account_id_unique")
 		},
+		// Post-auto so the per-bucket cost columns already exist when the legacy
+		// aggregates are folded into them and dropped.
+		func(db *gorm.DB) error {
+			return migration.FoldCostAggregatesIntoBuckets[agentNetworkTypes.AgentNetworkAccessLog](ctx, db)
+		},
+		func(db *gorm.DB) error {
+			return migration.FoldCostAggregatesIntoBuckets[agentNetworkTypes.AgentNetworkUsage](ctx, db)
+		},
 	}
 }
 

proxy/internal/accesslog/logger.go

@@ -227,7 +227,14 @@ var usageMetadataKeys = map[string]struct{}{
 	"llm.input_tokens":          {},
 	"llm.output_tokens":         {},
 	"llm.total_tokens":          {},
+	"llm.cached_input_tokens":   {},
+	"llm.cache_creation_tokens": {},
+	"cost.usd_input":            {},
+	"cost.usd_cached_input":     {},
+	"cost.usd_cache_creation":   {},
+	"cost.usd_output":           {},
 	"cost.usd_total":            {},
+	"cost.usd_cache":            {},
 	"llm.authorising_groups":    {},
 }
 

proxy/internal/llm/bedrock.go

@@ -56,10 +56,12 @@ type bedrockResponse struct {
 		OutputTokens             int64 `json:"output_tokens"`
 		CacheReadInputTokens     int64 `json:"cache_read_input_tokens"`
 		CacheCreationInputTokens int64 `json:"cache_creation_input_tokens"`
-		// Converse — camelCase.
+		// Converse — camelCase; cache buckets are additive to inputTokens (AWS names the write bucket cacheWriteInputTokens).
 		InputTokensCamel      int64 `json:"inputTokens"`
 		OutputTokensCamel     int64 `json:"outputTokens"`
 		TotalTokensCamel      int64 `json:"totalTokens"`
+		CacheReadTokensCamel  int64 `json:"cacheReadInputTokens"`
+		CacheWriteTokensCamel int64 `json:"cacheWriteInputTokens"`
 	} `json:"usage"`
 }
 
@@ -83,16 +85,18 @@ func (BedrockParser) ParseResponse(status int, contentType string, body []byte)
 	}
 	inTok := firstNonZero(resp.Usage.InputTokens, resp.Usage.InputTokensCamel)
 	outTok := firstNonZero(resp.Usage.OutputTokens, resp.Usage.OutputTokensCamel)
+	cacheRead := firstNonZero(resp.Usage.CacheReadInputTokens, resp.Usage.CacheReadTokensCamel)
+	cacheWrite := firstNonZero(resp.Usage.CacheCreationInputTokens, resp.Usage.CacheWriteTokensCamel)
 	total := resp.Usage.TotalTokensCamel
 	if total == 0 {
-		total = inTok + outTok + resp.Usage.CacheReadInputTokens + resp.Usage.CacheCreationInputTokens
+		total = inTok + outTok + cacheRead + cacheWrite
 	}
 	return Usage{
 		InputTokens:         inTok,
 		OutputTokens:        outTok,
 		TotalTokens:         total,
-		CachedInputTokens:   resp.Usage.CacheReadInputTokens,
-		CacheCreationTokens: resp.Usage.CacheCreationInputTokens,
+		CachedInputTokens:   cacheRead,
+		CacheCreationTokens: cacheWrite,
 	}, nil
 }
 

proxy/internal/llm/bedrock_test.go

@@ -26,6 +26,18 @@ func TestBedrockParser_ParseResponse_Converse(t *testing.T) {
 	require.Equal(t, int64(14), u.TotalTokens, "converse uses provider total")
 }
 
+// Converse camelCase cache fields must land in the billed Usage buckets, same as the InvokeModel snake_case fields.
+func TestBedrockParser_ParseResponse_ConverseCacheBuckets(t *testing.T) {
+	body := []byte(`{"usage":{"inputTokens":11,"outputTokens":3,"cacheReadInputTokens":7,"cacheWriteInputTokens":9}}`)
+	u, err := BedrockParser{}.ParseResponse(200, "application/json", body)
+	require.NoError(t, err)
+	require.Equal(t, int64(11), u.InputTokens, "converse input tokens")
+	require.Equal(t, int64(3), u.OutputTokens, "converse output tokens")
+	require.Equal(t, int64(7), u.CachedInputTokens, "converse cache-read tokens")
+	require.Equal(t, int64(9), u.CacheCreationTokens, "converse cache-write tokens")
+	require.Equal(t, int64(11+3+7+9), u.TotalTokens, "total backfill is additive when the provider omits totalTokens")
+}
+
 func TestBedrockParser_ParseResponse_StreamingUnsupported(t *testing.T) {
 	_, err := BedrockParser{}.ParseResponse(200, "application/vnd.amazon.eventstream", []byte("binary"))
 	require.ErrorIs(t, err, ErrStreamingUnsupported, "event-stream must route to the streaming accumulator")

proxy/internal/llm/pricing/pricing.go

@@ -128,6 +128,46 @@ type Table struct {
 //   - Other providers: cached and cacheCreation are ignored; cost is
 //     inTokens*InputPer1K + outTokens*OutputPer1K.
 func (t *Table) Cost(provider, model string, inTokens, outTokens, cachedInput, cacheCreation int64) (float64, bool) {
+	c, ok := t.Costs(provider, model, inTokens, outTokens, cachedInput, cacheCreation)
+	return c.TotalUSD, ok
+}
+
+// Costs is a per-request cost split. The four per-bucket fields are the base
+// of the breakdown — one per token bucket the provider bills separately — and
+// the two aggregates are derived from them:
+//
+//	TotalUSD = InputUSD + CachedInputUSD + CacheCreationUSD + OutputUSD
+//	CacheUSD = CachedInputUSD + CacheCreationUSD
+//
+// InputUSD is always the cost of the *non-cached* input bucket, for both
+// provider shapes: on OpenAI the cached subset is carved out of inTokens and
+// billed as CachedInputUSD, so the two never double-count. Buckets a provider
+// doesn't bill are zero, which keeps the identities above true everywhere.
+type Costs struct {
+	InputUSD         float64
+	CachedInputUSD   float64
+	CacheCreationUSD float64
+	OutputUSD        float64
+	TotalUSD         float64
+	CacheUSD         float64
+}
+
+// newCosts assembles a split from its per-bucket parts, deriving the two
+// aggregates so TotalUSD and CacheUSD can never drift from the breakdown.
+func newCosts(input, cachedInput, cacheCreation, output float64) Costs {
+	return Costs{
+		InputUSD:         input,
+		CachedInputUSD:   cachedInput,
+		CacheCreationUSD: cacheCreation,
+		OutputUSD:        output,
+		TotalUSD:         input + cachedInput + cacheCreation + output,
+		CacheUSD:         cachedInput + cacheCreation,
+	}
+}
+
+// Costs returns the estimated USD cost split for the given token counts, with
+// the same semantics as Cost.
+func (t *Table) Costs(provider, model string, inTokens, outTokens, cachedInput, cacheCreation int64) (Costs, bool) {
 	// Clamp negatives to zero before any pricing math so a malformed
 	// upstream count can never produce a negative cost.
 	if inTokens < 0 {
@@ -143,15 +183,15 @@ func (t *Table) Cost(provider, model string, inTokens, outTokens, cachedInput, c
 		cacheCreation = 0
 	}
 	if t == nil {
-		return 0, false
+		return Costs{}, false
 	}
 	byModel, ok := t.entries[provider]
 	if !ok {
-		return 0, false
+		return Costs{}, false
 	}
 	entry, ok := byModel[model]
 	if !ok {
-		return 0, false
+		return Costs{}, false
 	}
 	output := (float64(outTokens) / 1000.0) * entry.OutputPer1K
 	switch provider {
@@ -168,7 +208,7 @@ func (t *Table) Cost(provider, model string, inTokens, outTokens, cachedInput, c
 		}
 		nonCached := float64(inTokens-clamped) / 1000.0 * entry.InputPer1K
 		cached := float64(clamped) / 1000.0 * cachedRate
-		return nonCached + cached + output, true
+		return newCosts(nonCached, cached, 0, output), true
 	case "anthropic", "bedrock":
 		// Bedrock-Anthropic returns the same additive cache buckets as
 		// first-party Anthropic; non-Anthropic Bedrock models simply report
@@ -184,10 +224,10 @@ func (t *Table) Cost(provider, model string, inTokens, outTokens, cachedInput, c
 		input := float64(inTokens) / 1000.0 * entry.InputPer1K
 		read := float64(cachedInput) / 1000.0 * readRate
 		create := float64(cacheCreation) / 1000.0 * createRate
-		return input + read + create + output, true
+		return newCosts(input, read, create, output), true
 	default:
 		input := float64(inTokens) / 1000.0 * entry.InputPer1K
-		return input + output, true
+		return newCosts(input, 0, 0, output), true
 	}
 }
 

proxy/internal/middleware/builtin/cost_calculation_matrix_test.go

@@ -0,0 +1,329 @@
+package builtin_test
+
+import (
+	"bytes"
+	"context"
+	"encoding/base64"
+	"encoding/json"
+	"strconv"
+	"testing"
+
+	"github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"github.com/netbirdio/netbird/proxy/internal/middleware"
+	"github.com/netbirdio/netbird/proxy/internal/middleware/builtin"
+	"github.com/netbirdio/netbird/proxy/internal/middleware/builtin/cost_meter"
+	"github.com/netbirdio/netbird/proxy/internal/middleware/builtin/llm_request_parser"
+	"github.com/netbirdio/netbird/proxy/internal/middleware/builtin/llm_response_parser"
+)
+
+// Drives the real pipeline (llm_request_parser → llm_response_parser → cost_meter) on the embedded default pricing
+// table and asserts exact USD amounts hardcoded from the vendors' published prices, including the cache split.
+func TestCostCalculation_ProviderMatrix(t *testing.T) {
+	// Empty data dir → embedded defaults, like a proxy with no pricing override.
+	builtin.Configure(context.Background(), t.TempDir(), nil, nil, nil)
+
+	reqMW, err := llm_request_parser.Factory{}.New(nil)
+	require.NoError(t, err, "build llm_request_parser")
+	respMW, err := llm_response_parser.Factory{}.New(nil)
+	require.NoError(t, err, "build llm_response_parser")
+	costMW, err := cost_meter.Factory{}.New(nil)
+	require.NoError(t, err, "build cost_meter")
+	t.Cleanup(func() { _ = costMW.Close() })
+
+	const jsonCT = "application/json"
+	const sseCT = "text/event-stream"
+	const awsCT = "application/vnd.amazon.eventstream"
+
+	cases := []struct {
+		name     string
+		url      string
+		reqBody  []byte
+		respCT   string
+		respBody []byte
+
+		wantProvider  string
+		wantModel     string
+		wantCost      float64 // exact expected USD; ignored when wantSkip is set
+		wantCacheCost float64 // expected cost.usd_cache portion of wantCost
+		wantSkip      string  // expected cost.skipped reason, "" when priced
+	}{
+		{
+			// gpt-4o-mini $0.15/$0.60 per MTok: 1000×0.15/1M + 500×0.60/1M.
+			name:         "openai chat completions",
+			url:          "https://api.openai.com/v1/chat/completions",
+			reqBody:      []byte(`{"model":"gpt-4o-mini","messages":[{"role":"user","content":"hi"}]}`),
+			respCT:       jsonCT,
+			respBody:     []byte(`{"choices":[{"message":{"content":"pong"}}],"usage":{"prompt_tokens":1000,"completion_tokens":500,"total_tokens":1500}}`),
+			wantProvider: "openai",
+			wantModel:    "gpt-4o-mini",
+			wantCost:     0.00045,
+		},
+		{
+			// OpenAI cached tokens are a SUBSET of prompt_tokens at a discount; gpt-4o $2.50/$10 per MTok, cached $1.25/M:
+			// 250×2.5/1M + 750×1.25/1M + 500×10/1M.
+			name:          "openai cached subset discount",
+			url:           "https://api.openai.com/v1/chat/completions",
+			reqBody:       []byte(`{"model":"gpt-4o","messages":[{"role":"user","content":"hi"}]}`),
+			respCT:        jsonCT,
+			respBody:      []byte(`{"usage":{"prompt_tokens":1000,"completion_tokens":500,"prompt_tokens_details":{"cached_tokens":750}}}`),
+			wantProvider:  "openai",
+			wantModel:     "gpt-4o",
+			wantCost:      0.0065625,
+			wantCacheCost: 0.0009375,
+		},
+		{
+			// OpenAI streaming: usage rides the final SSE frame.
+			name:         "openai chat SSE stream",
+			url:          "https://api.openai.com/v1/chat/completions",
+			reqBody:      []byte(`{"model":"gpt-4o-mini","stream":true,"messages":[{"role":"user","content":"hi"}]}`),
+			respCT:       sseCT,
+			respBody:     sseBody(`{"choices":[{"delta":{"content":"po"}}]}`, `{"choices":[{"delta":{"content":"ng"}}]}`, `{"choices":[],"usage":{"prompt_tokens":1000,"completion_tokens":500}}`, "[DONE]"),
+			wantProvider: "openai",
+			wantModel:    "gpt-4o-mini",
+			wantCost:     0.00045,
+		},
+		{
+			// Mistral speaks the OpenAI shape: mistral-large-latest $0.50/$1.50 per MTok.
+			name:         "mistral via openai shape",
+			url:          "https://api.mistral.ai/v1/chat/completions",
+			reqBody:      []byte(`{"model":"mistral-large-latest","messages":[{"role":"user","content":"hi"}]}`),
+			respCT:       jsonCT,
+			respBody:     []byte(`{"usage":{"prompt_tokens":1000,"completion_tokens":1000}}`),
+			wantProvider: "openai",
+			wantModel:    "mistral-large-latest",
+			wantCost:     0.002,
+		},
+		{
+			// The field report, minus caching: Bedrock Sonnet 4.6 $3/$15 per MTok, 3×3/1M + 1514×15/1M = $0.022719.
+			// Also covers inference-profile normalization of the region-prefixed versioned id in the URL.
+			name:         "bedrock invoke — reported scenario, no cache",
+			url:          "https://bedrock-runtime.eu-central-1.amazonaws.com/model/global.anthropic.claude-sonnet-4-6-20260115-v1:0/invoke",
+			reqBody:      []byte(`{"messages":[{"role":"user","content":"hi"}]}`),
+			respCT:       jsonCT,
+			respBody:     []byte(`{"content":[{"type":"text","text":"pong"}],"usage":{"input_tokens":3,"output_tokens":1514}}`),
+			wantProvider: "bedrock",
+			wantModel:    "anthropic.claude-sonnet-4-6",
+			wantCost:     0.022719,
+		},
+		{
+			// The field report as observed: the FIRST call of a session also wrote a 30,528-token prompt cache at
+			// 1.25× input ($3.75/M): 0.022719 + 30528×3.75/1M = $0.137199 — the reported $0.1372.
+			name:          "bedrock invoke — reported scenario with cache write",
+			url:           "https://bedrock-runtime.eu-central-1.amazonaws.com/model/global.anthropic.claude-sonnet-4-6-20260115-v1:0/invoke",
+			reqBody:       []byte(`{"messages":[{"role":"user","content":"hi"}]}`),
+			respCT:        jsonCT,
+			respBody:      []byte(`{"usage":{"input_tokens":3,"output_tokens":1514,"cache_creation_input_tokens":30528,"cache_read_input_tokens":0}}`),
+			wantProvider:  "bedrock",
+			wantModel:     "anthropic.claude-sonnet-4-6",
+			wantCost:      0.137199,
+			wantCacheCost: 0.11448,
+		},
+		{
+			// Same numbers over the InvokeModel event-stream: message_start carries input + cache, message_delta the output.
+			name:          "bedrock invoke stream with cache write",
+			url:           "https://bedrock-runtime.eu-central-1.amazonaws.com/model/global.anthropic.claude-sonnet-4-6-20260115-v1:0/invoke-with-response-stream",
+			reqBody:       []byte(`{"messages":[{"role":"user","content":"hi"}]}`),
+			respCT:        awsCT,
+			respBody:      bedrockInvokeStream(t, `{"type":"message_start","message":{"usage":{"input_tokens":3,"output_tokens":1,"cache_creation_input_tokens":30528}}}`, `{"type":"content_block_delta","delta":{"type":"text_delta","text":"pong"}}`, `{"type":"message_delta","usage":{"output_tokens":1514}}`),
+			wantProvider:  "bedrock",
+			wantModel:     "anthropic.claude-sonnet-4-6",
+			wantCost:      0.137199,
+			wantCacheCost: 0.11448,
+		},
+		{
+			// Converse camelCase usage incl. cache buckets. Haiku 4.5 $1/$5 per MTok, read $0.10/M, write $1.25/M:
+			// 50×1/1M + 100×5/1M + 2000×0.1/1M + 1000×1.25/1M = $0.002.
+			name:          "bedrock converse with cache buckets",
+			url:           "https://bedrock-runtime.eu-central-1.amazonaws.com/model/eu.anthropic.claude-haiku-4-5-20251001-v1:0/converse",
+			reqBody:       []byte(`{"messages":[{"role":"user","content":[{"text":"hi"}]}]}`),
+			respCT:        jsonCT,
+			respBody:      []byte(`{"output":{"message":{"content":[{"text":"pong"}]}},"usage":{"inputTokens":50,"outputTokens":100,"totalTokens":3150,"cacheReadInputTokens":2000,"cacheWriteInputTokens":1000}}`),
+			wantProvider:  "bedrock",
+			wantModel:     "anthropic.claude-haiku-4-5",
+			wantCost:      0.002,
+			wantCacheCost: 0.00145,
+		},
+		{
+			// Same numbers over converse-stream: usage rides the trailing metadata frame.
+			name:    "bedrock converse stream with cache buckets",
+			url:     "https://bedrock-runtime.eu-central-1.amazonaws.com/model/eu.anthropic.claude-haiku-4-5-20251001-v1:0/converse-stream",
+			reqBody: []byte(`{"messages":[{"role":"user","content":[{"text":"hi"}]}]}`),
+			respCT:  awsCT,
+			respBody: bedrockConverseStream(t,
+				`{"delta":{"text":"pong"}}`,
+				`{"usage":{"inputTokens":50,"outputTokens":100,"totalTokens":3150,"cacheReadInputTokens":2000,"cacheWriteInputTokens":1000}}`,
+			),
+			wantProvider:  "bedrock",
+			wantModel:     "anthropic.claude-haiku-4-5",
+			wantCost:      0.002,
+			wantCacheCost: 0.00145,
+		},
+		{
+			// First-party Anthropic, additive cache buckets. Sonnet 4.6:
+			// 256×3/1M + 200×15/1M + 768×0.3/1M + 512×3.75/1M.
+			name:          "anthropic messages with cache buckets",
+			url:           "https://api.anthropic.com/v1/messages",
+			reqBody:       []byte(`{"model":"claude-sonnet-4-6","messages":[{"role":"user","content":"hi"}]}`),
+			respCT:        jsonCT,
+			respBody:      []byte(`{"content":[{"type":"text","text":"pong"}],"usage":{"input_tokens":256,"output_tokens":200,"cache_read_input_tokens":768,"cache_creation_input_tokens":512}}`),
+			wantProvider:  "anthropic",
+			wantModel:     "claude-sonnet-4-6",
+			wantCost:      0.0059184,
+			wantCacheCost: 0.0021504,
+		},
+		{
+			// Anthropic SSE: input from message_start, output from message_delta. Haiku 4.5: 1000×1/1M + 2000×5/1M.
+			name:         "anthropic SSE stream",
+			url:          "https://api.anthropic.com/v1/messages",
+			reqBody:      []byte(`{"model":"claude-haiku-4-5","stream":true,"messages":[{"role":"user","content":"hi"}]}`),
+			respCT:       sseCT,
+			respBody:     sseBody(`{"type":"message_start","message":{"usage":{"input_tokens":1000,"output_tokens":2}}}`, `{"type":"content_block_delta","delta":{"type":"text_delta","text":"pong"}}`, `{"type":"message_delta","usage":{"output_tokens":2000}}`, `{"type":"message_stop"}`),
+			wantProvider: "anthropic",
+			wantModel:    "claude-haiku-4-5",
+			wantCost:     0.011,
+		},
+		{
+			// Kimi's Anthropic-compatible endpoint: kimi-k3 $3/$15 per MTok under the anthropic table.
+			name:         "kimi anthropic shape",
+			url:          "https://api.moonshot.ai/anthropic/v1/messages",
+			reqBody:      []byte(`{"model":"kimi-k3","messages":[{"role":"user","content":"hi"}]}`),
+			respCT:       jsonCT,
+			respBody:     []byte(`{"usage":{"input_tokens":1000,"output_tokens":1000}}`),
+			wantProvider: "anthropic",
+			wantModel:    "kimi-k3",
+			wantCost:     0.018,
+		},
+		{
+			// Vertex path-routed model with "@version" stripped; Anthropic-on-Vertex priced under the anthropic table.
+			name:         "vertex anthropic path-routed",
+			url:          "https://aiplatform.googleapis.com/v1/projects/p/locations/global/publishers/anthropic/models/claude-sonnet-4-6@20260115:rawPredict",
+			reqBody:      []byte(`{"anthropic_version":"vertex-2023-10-16","messages":[{"role":"user","content":"hi"}]}`),
+			respCT:       jsonCT,
+			respBody:     []byte(`{"usage":{"input_tokens":200,"output_tokens":100}}`),
+			wantProvider: "anthropic",
+			wantModel:    "claude-sonnet-4-6",
+			wantCost:     0.0021,
+		},
+		{
+			// Gateway-prefixed model ids are not in the pricing table: the meter must SKIP, never guess a rate.
+			name:         "gateway-prefixed model skips pricing",
+			url:          "https://gateway.example.com/v1/chat/completions",
+			reqBody:      []byte(`{"model":"openai/gpt-4o-mini","messages":[{"role":"user","content":"hi"}]}`),
+			respCT:       jsonCT,
+			respBody:     []byte(`{"usage":{"prompt_tokens":1000,"completion_tokens":500}}`),
+			wantProvider: "openai",
+			wantModel:    "openai/gpt-4o-mini",
+			wantSkip:     "unknown_model",
+		},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			in := &middleware.Input{
+				Method:  "POST",
+				URL:     tc.url,
+				Headers: []middleware.KV{{Key: "Content-Type", Value: "application/json"}},
+				Body:    tc.reqBody,
+			}
+
+			reqOut, err := reqMW.Invoke(context.Background(), in)
+			require.NoError(t, err, "request parser")
+			in.Metadata = append(in.Metadata, reqOut.Metadata...)
+
+			require.Equal(t, tc.wantProvider, metaKV(in.Metadata, middleware.KeyLLMProvider), "detected provider")
+			require.Equal(t, tc.wantModel, metaKV(in.Metadata, middleware.KeyLLMModel), "detected (normalized) model")
+
+			in.Status = 200
+			in.RespHeaders = []middleware.KV{{Key: "Content-Type", Value: tc.respCT}}
+			in.RespBody = tc.respBody
+
+			respOut, err := respMW.Invoke(context.Background(), in)
+			require.NoError(t, err, "response parser")
+			in.Metadata = append(in.Metadata, respOut.Metadata...)
+
+			costOut, err := costMW.Invoke(context.Background(), in)
+			require.NoError(t, err, "cost meter")
+
+			if tc.wantSkip != "" {
+				assert.Equal(t, tc.wantSkip, metaKV(costOut.Metadata, middleware.KeyCostSkipped), "expected cost skip reason")
+				assert.Empty(t, metaKV(costOut.Metadata, middleware.KeyCostUSDTotal), "no cost may be emitted on skip")
+				return
+			}
+
+			raw := metaKV(costOut.Metadata, middleware.KeyCostUSDTotal)
+			require.NotEmpty(t, raw, "cost.usd_total must be emitted; skip=%q", metaKV(costOut.Metadata, middleware.KeyCostSkipped))
+			got, err := strconv.ParseFloat(raw, 64)
+			require.NoError(t, err, "cost must be a float")
+			// cost.usd_total is rendered with %.6f: allow half of the last printed digit on top of float error.
+			assert.InDelta(t, tc.wantCost, got, 5.1e-7, "USD cost for %s", tc.name)
+
+			rawCache := metaKV(costOut.Metadata, middleware.KeyCostUSDCache)
+			require.NotEmpty(t, rawCache, "cost.usd_cache must be emitted next to cost.usd_total")
+			gotCache, err := strconv.ParseFloat(rawCache, 64)
+			require.NoError(t, err, "cache cost must be a float")
+			assert.InDelta(t, tc.wantCacheCost, gotCache, 5.1e-7, "cache USD cost for %s", tc.name)
+		})
+	}
+}
+
+// metaKV returns the value for key in kvs, or "" when absent.
+func metaKV(kvs []middleware.KV, key string) string {
+	for _, kv := range kvs {
+		if kv.Key == key {
+			return kv.Value
+		}
+	}
+	return ""
+}
+
+// sseBody renders data frames as a text/event-stream body.
+func sseBody(frames ...string) []byte {
+	var b bytes.Buffer
+	for _, f := range frames {
+		b.WriteString("data: ")
+		b.WriteString(f)
+		b.WriteString("\n\n")
+	}
+	return b.Bytes()
+}
+
+// awsFrame encodes one AWS event-stream frame with the given :event-type.
+func awsFrame(t *testing.T, eventType string, payload []byte) []byte {
+	t.Helper()
+	var buf bytes.Buffer
+	enc := eventstream.NewEncoder()
+	require.NoError(t, enc.Encode(&buf, eventstream.Message{
+		Headers: eventstream.Headers{{Name: ":event-type", Value: eventstream.StringValue(eventType)}},
+		Payload: payload,
+	}), "encode event-stream frame")
+	return buf.Bytes()
+}
+
+// bedrockInvokeStream builds an invoke-with-response-stream body: each "chunk" frame wraps a base64 Anthropic event.
+func bedrockInvokeStream(t *testing.T, events ...string) []byte {
+	t.Helper()
+	var body bytes.Buffer
+	for _, ev := range events {
+		wrap, err := json.Marshal(map[string]string{"bytes": base64.StdEncoding.EncodeToString([]byte(ev))})
+		require.NoError(t, err)
+		body.Write(awsFrame(t, "chunk", wrap))
+	}
+	return body.Bytes()
+}
+
+// bedrockConverseStream builds a converse-stream body: contentBlockDelta frames plus a trailing metadata usage frame.
+func bedrockConverseStream(t *testing.T, deltas ...string) []byte {
+	t.Helper()
+	var body bytes.Buffer
+	for i, ev := range deltas {
+		eventType := "contentBlockDelta"
+		if i == len(deltas)-1 {
+			eventType = "metadata"
+		}
+		body.Write(awsFrame(t, eventType, []byte(ev)))
+	}
+	return body.Bytes()
+}

proxy/internal/middleware/builtin/cost_meter/middleware.go

@@ -32,7 +32,12 @@ const (
 )
 
 var metadataKeys = []string{
+	middleware.KeyCostUSDInput,
+	middleware.KeyCostUSDCachedInput,
+	middleware.KeyCostUSDCacheCreation,
+	middleware.KeyCostUSDOutput,
 	middleware.KeyCostUSDTotal,
+	middleware.KeyCostUSDCache,
 	middleware.KeyCostSkipped,
 }
 
@@ -140,18 +145,38 @@ func (m *Middleware) Invoke(_ context.Context, in *middleware.Input) (*middlewar
 	}
 
 	table := m.loader.Get()
-	cost, ok := table.Cost(provider, model, inTokens, outTokens, cachedTokens, cacheCreationTokens)
+	costs, ok := table.Costs(provider, model, inTokens, outTokens, cachedTokens, cacheCreationTokens)
 	if !ok {
 		out.Metadata = skip(skipUnknownModel)
 		return out, nil
 	}
 
+	// Per-bucket costs first: they're the base of the breakdown, and the two
+	// aggregates that follow are derived from exactly these four values.
 	out.Metadata = []middleware.KV{
-		{Key: middleware.KeyCostUSDTotal, Value: fmt.Sprintf("%.6f", cost)},
+		{Key: middleware.KeyCostUSDInput, Value: usd(costs.InputUSD)},
+		{Key: middleware.KeyCostUSDCachedInput, Value: usd(costs.CachedInputUSD)},
+		{Key: middleware.KeyCostUSDCacheCreation, Value: usd(costs.CacheCreationUSD)},
+		{Key: middleware.KeyCostUSDOutput, Value: usd(costs.OutputUSD)},
+		{Key: middleware.KeyCostUSDTotal, Value: usd(costs.TotalUSD)},
+		{Key: middleware.KeyCostUSDCache, Value: usd(costs.CacheUSD)},
 	}
 	return out, nil
 }
 
+// usd renders a cost as the fixed-precision string every cost.usd_* key
+// carries, so the per-bucket values and the aggregates round identically.
+//
+// 9 decimals, not 6: these values are summed downstream — per request, per
+// session, and per usage bucket — so the rounding step is applied once per
+// bucket per row and then accumulated. At 6 decimals a single row loses up to
+// 2e-6 across its four buckets (enough to break a 1e-6 reconciliation against
+// published rates), and a bucket smaller than half a microdollar quantises to
+// zero outright: 16 cache-read tokens on a cheap model is 1.6e-9, so summing
+// 10k such rows reports 0.02 instead of 0.016. Nano-dollar precision keeps the
+// per-row error ~1000x below the smallest realistic bucket.
+func usd(v float64) string { return fmt.Sprintf("%.9f", v) }
+
 // skip returns a single-entry metadata slice carrying the given skip
 // reason under KeyCostSkipped.
 func skip(reason string) []middleware.KV {

proxy/internal/middleware/builtin/cost_meter/middleware_test.go

@@ -67,7 +67,15 @@ func TestMiddleware_StaticSurface(t *testing.T) {
 	assert.NoError(t, mw.Close(), "Close on stateless middleware is a no-op")
 
 	keys := mw.MetadataKeys()
-	expected := []string{middleware.KeyCostUSDTotal, middleware.KeyCostSkipped}
+	expected := []string{
+		middleware.KeyCostUSDInput,
+		middleware.KeyCostUSDCachedInput,
+		middleware.KeyCostUSDCacheCreation,
+		middleware.KeyCostUSDOutput,
+		middleware.KeyCostUSDTotal,
+		middleware.KeyCostUSDCache,
+		middleware.KeyCostSkipped,
+	}
 	assert.Equal(t, expected, keys, "metadata key allowlist must match the spec")
 }
 
@@ -105,7 +113,7 @@ func TestFactory_DefaultPricingPathLoadsFixture(t *testing.T) {
 
 	value, ok := metaValue(t, out.Metadata, middleware.KeyCostUSDTotal)
 	require.True(t, ok, "cost.usd_total must be emitted for known model")
-	assert.Equal(t, "0.000750", value, "0.00015 + 0.0006 per 1k tokens, 6-decimal format")
+	assert.Equal(t, "0.000750000", value, "0.00015 + 0.0006 per 1k tokens, 9-decimal format")
 }
 
 func TestFactory_PricingPathOverride(t *testing.T) {
@@ -129,7 +137,7 @@ func TestFactory_PricingPathOverride(t *testing.T) {
 
 	value, ok := metaValue(t, out.Metadata, middleware.KeyCostUSDTotal)
 	require.True(t, ok, "cost.usd_total must be emitted with custom pricing path")
-	assert.Equal(t, "0.015000", value, "2*0.0025 + 1*0.01 = 0.015 with 6-decimal format")
+	assert.Equal(t, "0.015000000", value, "2*0.0025 + 1*0.01 = 0.015 with 9-decimal format")
 }
 
 func TestInvoke_ComputesCostForKnownModel(t *testing.T) {
@@ -148,7 +156,7 @@ func TestInvoke_ComputesCostForKnownModel(t *testing.T) {
 
 	value, ok := metaValue(t, out.Metadata, middleware.KeyCostUSDTotal)
 	require.True(t, ok, "cost.usd_total must be emitted")
-	assert.Equal(t, "0.018000", value, "0.003 + 0.015 = 0.018 with 6-decimal format")
+	assert.Equal(t, "0.018000000", value, "0.003 + 0.015 = 0.018 with 9-decimal format")
 	_, skipped := metaValue(t, out.Metadata, middleware.KeyCostSkipped)
 	assert.False(t, skipped, "cost.skipped must not be set when cost is computed")
 }
@@ -357,8 +365,25 @@ func TestInvoke_OpenAICachedSubsetDiscount(t *testing.T) {
 	value, ok := metaValue(t, out.Metadata, middleware.KeyCostUSDTotal)
 	require.True(t, ok, "cached subset path must produce a cost — never a skip")
 	// 250 non-cached at 0.0025/1k + 750 cached at 0.00125/1k + 500 output at 0.01/1k.
-	assert.Equal(t, "0.006563", value,
+	assert.Equal(t, "0.006562500", value,
 		"cached subset must be billed at the discount rate, non-cached at the full rate; never double-billed")
+
+	cache, ok := metaValue(t, out.Metadata, middleware.KeyCostUSDCache)
+	require.True(t, ok, "cost.usd_cache must be emitted alongside cost.usd_total")
+	// 750 cached at 0.00125/1k = 0.0009375.
+	assert.Equal(t, "0.000937500", cache, "cache cost is the discounted cost of the cached subset")
+
+	// Per-bucket breakdown. On OpenAI the cached subset is carved out of the
+	// input bucket, so input covers only the 250 non-cached tokens — the two
+	// must never double-count the same 750 tokens.
+	assertBucket(t, out.Metadata, middleware.KeyCostUSDInput, "0.000625000",
+		"input bucket bills only the non-cached remainder")
+	assertBucket(t, out.Metadata, middleware.KeyCostUSDCachedInput, "0.000937500",
+		"cached-input bucket bills the discounted subset")
+	assertBucket(t, out.Metadata, middleware.KeyCostUSDCacheCreation, "0.000000000",
+		"OpenAI has no cache-write bucket")
+	assertBucket(t, out.Metadata, middleware.KeyCostUSDOutput, "0.005000000",
+		"output bucket bills 500 tokens at 0.01/1k")
 }
 
 // TestInvoke_AnthropicCacheBucketsAdditive proves the Anthropic
@@ -384,9 +409,33 @@ func TestInvoke_AnthropicCacheBucketsAdditive(t *testing.T) {
 	value, ok := metaValue(t, out.Metadata, middleware.KeyCostUSDTotal)
 	require.True(t, ok)
 	// 256 input * 0.003 + 768 cache_read * 0.0003 + 512 cache_creation * 0.00375 + 200 output * 0.015
-	// = 0.000768 + 0.0002304 + 0.00192 + 0.003 = 0.0059184 → "0.005918" with 6-decimal format.
-	assert.Equal(t, "0.005918", value,
+	// = 0.000768 + 0.0002304 + 0.00192 + 0.003 = 0.0059184.
+	assert.Equal(t, "0.005918400", value,
 		"each Anthropic input bucket must bill at its own rate — cache_read cheap, cache_creation expensive, regular input mid")
+
+	cache, ok := metaValue(t, out.Metadata, middleware.KeyCostUSDCache)
+	require.True(t, ok, "cost.usd_cache must be emitted alongside cost.usd_total")
+	// 768 cache_read * 0.0003 + 512 cache_creation * 0.00375 = 0.0021504.
+	assert.Equal(t, "0.002150400", cache, "cache cost sums the read and creation buckets")
+
+	// Per-bucket breakdown: four separately-billed buckets, each at its own rate.
+	assertBucket(t, out.Metadata, middleware.KeyCostUSDInput, "0.000768000",
+		"input bucket bills 256 tokens at 0.003/1k")
+	assertBucket(t, out.Metadata, middleware.KeyCostUSDCachedInput, "0.000230400",
+		"cache-read bucket bills 768 tokens at the cheap 0.0003/1k")
+	assertBucket(t, out.Metadata, middleware.KeyCostUSDCacheCreation, "0.001920000",
+		"cache-write bucket bills 512 tokens at the expensive 0.00375/1k")
+	assertBucket(t, out.Metadata, middleware.KeyCostUSDOutput, "0.003000000",
+		"output bucket bills 200 tokens at 0.015/1k")
+}
+
+// assertBucket asserts one per-bucket cost key carries the expected
+// 6-decimal value.
+func assertBucket(t *testing.T, md []middleware.KV, key, want, msg string) {
+	t.Helper()
+	got, ok := metaValue(t, md, key)
+	require.Truef(t, ok, "%s must be emitted", key)
+	assert.Equal(t, want, got, msg)
 }
 
 // TestInvoke_CachedTokensAbsentFallsBackToBaseFormula covers the
@@ -411,7 +460,7 @@ func TestInvoke_CachedTokensAbsentFallsBackToBaseFormula(t *testing.T) {
 	value, ok := metaValue(t, out.Metadata, middleware.KeyCostUSDTotal)
 	require.True(t, ok)
 	// 1000 input * 0.0025 + 500 output * 0.01 = 0.0025 + 0.005 = 0.0075
-	assert.Equal(t, "0.007500", value, "no cached metadata = same cost as before the feature landed")
+	assert.Equal(t, "0.007500000", value, "no cached metadata = same cost as before the feature landed")
 }
 
 // TestInvoke_UnparseableCachedTokensSkippedSilently proves the
@@ -435,7 +484,7 @@ func TestInvoke_UnparseableCachedTokensSkippedSilently(t *testing.T) {
 	require.NoError(t, err)
 	value, ok := metaValue(t, out.Metadata, middleware.KeyCostUSDTotal)
 	require.True(t, ok, "garbage cache metadata must NOT switch the response from a cost to a skip — fall back to 0 cached")
-	assert.Equal(t, "0.007500", value, "same as the no-cached-metadata path")
+	assert.Equal(t, "0.007500000", value, "same as the no-cached-metadata path")
 }
 
 // TestMiddleware_CloseCancelsReloader proves Close stops the per-instance

proxy/internal/middleware/builtin/llm_response_parser/streaming_bedrock.go

@@ -69,7 +69,8 @@ func applyBedrockInvokeChunk(payload []byte, usage *llm.Usage, completion *strin
 }
 
 // converseStreamEvent captures the Converse stream frames carrying completion
-// text (contentBlockDelta) and the final token usage (metadata).
+// text (contentBlockDelta) and the final token usage (metadata). Cache buckets
+// are additive to inputTokens (AWS write bucket: cacheWriteInputTokens).
 type converseStreamEvent struct {
 	Delta *struct {
 		Text string `json:"text"`
@@ -78,6 +79,8 @@ type converseStreamEvent struct {
 		InputTokens      int64 `json:"inputTokens"`
 		OutputTokens     int64 `json:"outputTokens"`
 		TotalTokens      int64 `json:"totalTokens"`
+		CacheReadTokens  int64 `json:"cacheReadInputTokens"`
+		CacheWriteTokens int64 `json:"cacheWriteInputTokens"`
 	} `json:"usage"`
 }
 
@@ -105,6 +108,12 @@ func applyConverseStreamEvent(eventType string, payload []byte, usage *llm.Usage
 			if ev.Usage.TotalTokens > 0 {
 				usage.TotalTokens = ev.Usage.TotalTokens
 			}
+			if ev.Usage.CacheReadTokens > 0 {
+				usage.CachedInputTokens = ev.Usage.CacheReadTokens
+			}
+			if ev.Usage.CacheWriteTokens > 0 {
+				usage.CacheCreationTokens = ev.Usage.CacheWriteTokens
+			}
 		}
 	}
 }

proxy/internal/middleware/builtin/llm_response_parser/streaming_bedrock_test.go

@@ -66,6 +66,24 @@ func TestAccumulateBedrockStream_Converse(t *testing.T) {
 	require.Equal(t, "pong", completion, "converse text deltas concatenated")
 }
 
+// The converse-stream metadata frame's camelCase cache fields must reach the billed cache buckets.
+func TestAccumulateBedrockStream_ConverseCacheBuckets(t *testing.T) {
+	var body bytes.Buffer
+	body.Write(bedrockFrame(t, "contentBlockDelta", mustJSON(t, map[string]any{"delta": map[string]any{"text": "pong"}})))
+	body.Write(bedrockFrame(t, "metadata", mustJSON(t, map[string]any{"usage": map[string]any{
+		"inputTokens": 11, "outputTokens": 3, "totalTokens": 30,
+		"cacheReadInputTokens": 7, "cacheWriteInputTokens": 9,
+	}})))
+
+	usage, completion := accumulateBedrockStream(body.Bytes())
+	require.Equal(t, int64(11), usage.InputTokens, "input tokens from metadata frame")
+	require.Equal(t, int64(3), usage.OutputTokens, "output tokens from metadata frame")
+	require.Equal(t, int64(7), usage.CachedInputTokens, "cache-read tokens from metadata frame")
+	require.Equal(t, int64(9), usage.CacheCreationTokens, "cache-write tokens from metadata frame")
+	require.Equal(t, int64(30), usage.TotalTokens, "provider-reported total wins")
+	require.Equal(t, "pong", completion)
+}
+
 func TestAccumulateBedrockStream_Truncated(t *testing.T) {
 	// A body cut mid-frame must not panic; partial usage is returned.
 	full := bedrockFrame(t, "metadata", mustJSON(t, map[string]any{"usage": map[string]any{"inputTokens": 11, "outputTokens": 3}}))

proxy/internal/middleware/keys.go

@@ -75,8 +75,19 @@ const (
 	KeyLLMAttributionGroupID = "llm.attribution_group_id"
 	KeyLLMAttributionWindowS = "llm.attribution_window_seconds"
 
-	// Cost metering (emitted by cost_meter).
+	// Cost metering (emitted by cost_meter). The four per-bucket keys are the
+	// base of the breakdown — one per token bucket the provider bills
+	// separately — and the two aggregates below are derived from them:
+	// usd_total is their sum, usd_cache is cached_input + cache_creation.
+	KeyCostUSDInput = "cost.usd_input"
+	// KeyCostUSDCachedInput is the cost of the cache-read bucket (Anthropic cache_read; OpenAI's discounted cached subset of input).
+	KeyCostUSDCachedInput = "cost.usd_cached_input"
+	// KeyCostUSDCacheCreation is the cost of the cache-write bucket. Zero for providers without one.
+	KeyCostUSDCacheCreation = "cost.usd_cache_creation"
+	KeyCostUSDOutput        = "cost.usd_output"
 	KeyCostUSDTotal         = "cost.usd_total"
+	// KeyCostUSDCache is the portion of cost.usd_total billed for prompt-cache buckets (cache read/creation, or OpenAI's cached input subset).
+	KeyCostUSDCache = "cost.usd_cache"
 	KeyCostSkipped  = "cost.skipped"
 
 	// Framework-emitted error markers. Use the mw.<id>.* prefix to

shared/management/http/api/openapi.yml

@@ -5822,13 +5822,48 @@ components:
         total_tokens:
           type: integer
           format: int64
-          description: Total tokens consumed.
+          description: Total tokens consumed, including prompt-cache tokens.
           example: 1840
+        cached_input_tokens:
+          type: integer
+          format: int64
+          description: Input tokens read from the provider's prompt cache. Additive to input_tokens for Anthropic-shape providers; a subset of input_tokens for OpenAI.
+          example: 0
+        cache_creation_tokens:
+          type: integer
+          format: int64
+          description: Input tokens written to the provider's prompt cache. Zero for providers without a cache-write bucket.
+          example: 30528
         cost_usd:
           type: number
           format: double
           description: Estimated USD cost of the request.
           example: 0.0231
+        input_cost_usd:
+          type: number
+          format: double
+          description: Cost of the non-cached input tokens. Base component of cost_usd.
+          example: 0.0048
+        cached_input_cost_usd:
+          type: number
+          format: double
+          description: Cost of the prompt-cache read tokens. Base component of cost_usd, and part of cache_cost_usd.
+          example: 0.0015
+        cache_creation_cost_usd:
+          type: number
+          format: double
+          description: Cost of the prompt-cache write tokens. Base component of cost_usd, and part of cache_cost_usd.
+          example: 0.1130
+        output_cost_usd:
+          type: number
+          format: double
+          description: Cost of the output tokens. Base component of cost_usd.
+          example: 0.0038
+        cache_cost_usd:
+          type: number
+          format: double
+          description: Portion of cost_usd billed for prompt-cache usage.
+          example: 0.1145
         stream:
           type: boolean
           description: Whether the request was a streaming completion.
@@ -5852,7 +5887,14 @@ components:
         - input_tokens
         - output_tokens
         - total_tokens
+        - cached_input_tokens
+        - cache_creation_tokens
+        - input_cost_usd
+        - cached_input_cost_usd
+        - cache_creation_cost_usd
+        - output_cost_usd
         - cost_usd
+        - cache_cost_usd
     AgentNetworkAccessLogsResponse:
       type: object
       properties:
@@ -5926,13 +5968,48 @@ components:
         total_tokens:
           type: integer
           format: int64
-          description: Total tokens across the session.
+          description: Total tokens across the session, including prompt-cache tokens.
           example: 12880
+        cached_input_tokens:
+          type: integer
+          format: int64
+          description: Total prompt-cache read tokens across the session.
+          example: 0
+        cache_creation_tokens:
+          type: integer
+          format: int64
+          description: Total prompt-cache write tokens across the session.
+          example: 30528
         cost_usd:
           type: number
           format: double
           description: Total estimated USD cost across the session.
           example: 0.1617
+        input_cost_usd:
+          type: number
+          format: double
+          description: Total cost of non-cached input tokens across the session.
+          example: 0.0210
+        cached_input_cost_usd:
+          type: number
+          format: double
+          description: Total cost of prompt-cache read tokens across the session.
+          example: 0.0015
+        cache_creation_cost_usd:
+          type: number
+          format: double
+          description: Total cost of prompt-cache write tokens across the session.
+          example: 0.1130
+        output_cost_usd:
+          type: number
+          format: double
+          description: Total cost of output tokens across the session.
+          example: 0.0262
+        cache_cost_usd:
+          type: number
+          format: double
+          description: Portion of cost_usd billed for prompt-cache usage across the session.
+          example: 0.1145
         providers:
           type: array
           items:
@@ -5959,7 +6036,14 @@ components:
         - input_tokens
         - output_tokens
         - total_tokens
+        - cached_input_tokens
+        - cache_creation_tokens
+        - input_cost_usd
+        - cached_input_cost_usd
+        - cache_creation_cost_usd
+        - output_cost_usd
         - cost_usd
+        - cache_cost_usd
         - decision
         - entries
     AgentNetworkAccessLogSessionsResponse:
@@ -6013,19 +6097,61 @@ components:
         total_tokens:
           type: integer
           format: int64
-          description: Total tokens in the bucket.
+          description: Total tokens in the bucket, including prompt-cache tokens.
           example: 184000
+        cached_input_tokens:
+          type: integer
+          format: int64
+          description: Total prompt-cache read tokens in the bucket.
+          example: 20000
+        cache_creation_tokens:
+          type: integer
+          format: int64
+          description: Total prompt-cache write tokens in the bucket.
+          example: 45000
+        input_cost_usd:
+          type: number
+          format: double
+          description: Total cost of non-cached input tokens in the bucket.
+          example: 1.12
+        cached_input_cost_usd:
+          type: number
+          format: double
+          description: Total cost of prompt-cache read tokens in the bucket.
+          example: 0.06
+        cache_creation_cost_usd:
+          type: number
+          format: double
+          description: Total cost of prompt-cache write tokens in the bucket.
+          example: 0.36
+        output_cost_usd:
+          type: number
+          format: double
+          description: Total cost of output tokens in the bucket.
+          example: 0.77
         cost_usd:
           type: number
           format: double
           description: Total estimated USD spend in the bucket.
           example: 2.31
+        cache_cost_usd:
+          type: number
+          format: double
+          description: Portion of cost_usd billed for prompt-cache usage in the bucket.
+          example: 0.42
       required:
         - period_start
         - input_tokens
         - output_tokens
         - total_tokens
+        - cached_input_tokens
+        - cache_creation_tokens
+        - input_cost_usd
+        - cached_input_cost_usd
+        - cache_creation_cost_usd
+        - output_cost_usd
         - cost_usd
+        - cache_cost_usd
     AgentNetworkSettings:
       type: object
       description: Per-account Agent Network gateway settings. One row per account; cluster and subdomain are auto-assigned on first provider create and immutable thereafter.

shared/management/http/api/types.gen.go

@@ -1732,6 +1732,21 @@ type AccountSettings struct {
 
 // AgentNetworkAccessLog One per-request agent-network (LLM) access log entry with flattened, queryable LLM dimensions.
 type AgentNetworkAccessLog struct {
+	// CacheCostUsd Portion of cost_usd billed for prompt-cache usage.
+	CacheCostUsd float64 `json:"cache_cost_usd"`
+
+	// CacheCreationCostUsd Cost of the prompt-cache write tokens. Base component of cost_usd, and part of cache_cost_usd.
+	CacheCreationCostUsd float64 `json:"cache_creation_cost_usd"`
+
+	// CacheCreationTokens Input tokens written to the provider's prompt cache. Zero for providers without a cache-write bucket.
+	CacheCreationTokens int64 `json:"cache_creation_tokens"`
+
+	// CachedInputCostUsd Cost of the prompt-cache read tokens. Base component of cost_usd, and part of cache_cost_usd.
+	CachedInputCostUsd float64 `json:"cached_input_cost_usd"`
+
+	// CachedInputTokens Input tokens read from the provider's prompt cache. Additive to input_tokens for Anthropic-shape providers; a subset of input_tokens for OpenAI.
+	CachedInputTokens int64 `json:"cached_input_tokens"`
+
 	// CostUsd Estimated USD cost of the request.
 	CostUsd float64 `json:"cost_usd"`
 
@@ -1753,6 +1768,9 @@ type AgentNetworkAccessLog struct {
 	// Id Unique identifier for the access log entry.
 	Id string `json:"id"`
 
+	// InputCostUsd Cost of the non-cached input tokens. Base component of cost_usd.
+	InputCostUsd float64 `json:"input_cost_usd"`
+
 	// InputTokens Input (prompt) tokens consumed.
 	InputTokens int64 `json:"input_tokens"`
 
@@ -1762,6 +1780,9 @@ type AgentNetworkAccessLog struct {
 	// Model Requested LLM model.
 	Model *string `json:"model,omitempty"`
 
+	// OutputCostUsd Cost of the output tokens. Base component of cost_usd.
+	OutputCostUsd float64 `json:"output_cost_usd"`
+
 	// OutputTokens Output (completion) tokens produced.
 	OutputTokens int64 `json:"output_tokens"`
 
@@ -1801,7 +1822,7 @@ type AgentNetworkAccessLog struct {
 	// Timestamp Timestamp when the request was made.
 	Timestamp time.Time `json:"timestamp"`
 
-	// TotalTokens Total tokens consumed.
+	// TotalTokens Total tokens consumed, including prompt-cache tokens.
 	TotalTokens int64 `json:"total_tokens"`
 
 	// UserId NetBird user id of the authenticated caller, if applicable.
@@ -1810,6 +1831,21 @@ type AgentNetworkAccessLog struct {
 
 // AgentNetworkAccessLogSession A session-grouped view of agent-network access logs — all requests sharing a session id (or a single session-less request) folded into one summary plus its ordered entries.
 type AgentNetworkAccessLogSession struct {
+	// CacheCostUsd Portion of cost_usd billed for prompt-cache usage across the session.
+	CacheCostUsd float64 `json:"cache_cost_usd"`
+
+	// CacheCreationCostUsd Total cost of prompt-cache write tokens across the session.
+	CacheCreationCostUsd float64 `json:"cache_creation_cost_usd"`
+
+	// CacheCreationTokens Total prompt-cache write tokens across the session.
+	CacheCreationTokens int64 `json:"cache_creation_tokens"`
+
+	// CachedInputCostUsd Total cost of prompt-cache read tokens across the session.
+	CachedInputCostUsd float64 `json:"cached_input_cost_usd"`
+
+	// CachedInputTokens Total prompt-cache read tokens across the session.
+	CachedInputTokens int64 `json:"cached_input_tokens"`
+
 	// CostUsd Total estimated USD cost across the session.
 	CostUsd float64 `json:"cost_usd"`
 
@@ -1825,12 +1861,18 @@ type AgentNetworkAccessLogSession struct {
 	// GroupIds Union of the authorising group ids across the session's entries.
 	GroupIds *[]string `json:"group_ids,omitempty"`
 
+	// InputCostUsd Total cost of non-cached input tokens across the session.
+	InputCostUsd float64 `json:"input_cost_usd"`
+
 	// InputTokens Total input (prompt) tokens across the session.
 	InputTokens int64 `json:"input_tokens"`
 
 	// Models Distinct models seen in the session.
 	Models *[]string `json:"models,omitempty"`
 
+	// OutputCostUsd Total cost of output tokens across the session.
+	OutputCostUsd float64 `json:"output_cost_usd"`
+
 	// OutputTokens Total output (completion) tokens across the session.
 	OutputTokens int64 `json:"output_tokens"`
 
@@ -1846,7 +1888,7 @@ type AgentNetworkAccessLogSession struct {
 	// StartedAt Timestamp of the session's earliest request.
 	StartedAt time.Time `json:"started_at"`
 
-	// TotalTokens Total tokens across the session.
+	// TotalTokens Total tokens across the session, including prompt-cache tokens.
 	TotalTokens int64 `json:"total_tokens"`
 
 	// UserId NetBird user id of the session's caller.
@@ -2347,19 +2389,40 @@ type AgentNetworkSettingsRequest struct {
 
 // AgentNetworkUsageBucket One aggregated agent-network usage time bucket (UTC). The bucket width is set by the request's granularity.
 type AgentNetworkUsageBucket struct {
+	// CacheCostUsd Portion of cost_usd billed for prompt-cache usage in the bucket.
+	CacheCostUsd float64 `json:"cache_cost_usd"`
+
+	// CacheCreationCostUsd Total cost of prompt-cache write tokens in the bucket.
+	CacheCreationCostUsd float64 `json:"cache_creation_cost_usd"`
+
+	// CacheCreationTokens Total prompt-cache write tokens in the bucket.
+	CacheCreationTokens int64 `json:"cache_creation_tokens"`
+
+	// CachedInputCostUsd Total cost of prompt-cache read tokens in the bucket.
+	CachedInputCostUsd float64 `json:"cached_input_cost_usd"`
+
+	// CachedInputTokens Total prompt-cache read tokens in the bucket.
+	CachedInputTokens int64 `json:"cached_input_tokens"`
+
 	// CostUsd Total estimated USD spend in the bucket.
 	CostUsd float64 `json:"cost_usd"`
 
+	// InputCostUsd Total cost of non-cached input tokens in the bucket.
+	InputCostUsd float64 `json:"input_cost_usd"`
+
 	// InputTokens Total input (prompt) tokens in the bucket.
 	InputTokens int64 `json:"input_tokens"`
 
+	// OutputCostUsd Total cost of output tokens in the bucket.
+	OutputCostUsd float64 `json:"output_cost_usd"`
+
 	// OutputTokens Total output (completion) tokens in the bucket.
 	OutputTokens int64 `json:"output_tokens"`
 
 	// PeriodStart Start of the bucket in YYYY-MM-DD (UTC) — the day, the week start (Monday), or the month start, depending on granularity.
 	PeriodStart string `json:"period_start"`
 
-	// TotalTokens Total tokens in the bucket.
+	// TotalTokens Total tokens in the bucket, including prompt-cache tokens.
 	TotalTokens int64 `json:"total_tokens"`
 }