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feat(adapter): report stored cost in JSON model breakdowns - #1903
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In auto cost mode a modelBreakdowns entry's cost mixes costUSD values stored in agent logs with costs calculated from the pricing table, and the JSON output gave consumers no way to tell the two apart. Each loaded entry now records the stored cost auto mode actually used, following the same path as missing_pricing_model, and every breakdown aggregation and merge sums it into an optional storedCost key. The key is omitted when no record in the breakdown used a stored cost, and calculate and display modes never emit it, so existing output keeps its shape. --no-cost strips it with the other cost fields. Adapters with stored costs (Claude, Copilot, Hermes, Kilo, OpenClaw, OpenCode, Pi) pass the stored value their own auto-mode rule selects. Refs #1898 Co-authored-by: erenozen <[email protected]>
Describe the storedCost model breakdown field, link it from the auto cost mode's mixed-data rule, and list it among the fields --no-cost removes. Refs #1898 Co-authored-by: erenozen <[email protected]>
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Review comments at @rust/adapters/grok/src/parser.rs:
- Line 326: Update the Grok cost assignment to set stored_cost using
stored_cost_for_mode(cost_usd, mode) instead of None, so recorded cost used by
calculate_grok_cost_at in Auto mode is reflected in the model breakdown.
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⛔ Files ignored due to path filters: 3
rust/crates/ccusage/tests/snapshots/copilot_cli__focused_daily_json.snapis excluded by!**/*.snaprust/crates/ccusage/tests/snapshots/copilot_cli__focused_monthly_and_session_json.snapis excluded by!**/*.snaprust/crates/ccusage/tests/snapshots/copilot_cli__unified_monthly_and_session_json.snapis excluded by!**/*.snap
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docs/guide/cost-modes.mddocs/guide/json-output.mdrust/adapters/amp/src/parser.rsrust/adapters/antigravity/src/parser.rsrust/adapters/antigravity/src/report.rsrust/adapters/claude/src/daily.rsrust/adapters/claude/src/lib.rsrust/adapters/codebuff/src/loader.rsrust/adapters/common/src/report.rsrust/adapters/copilot/src/loader.rsrust/adapters/droid/src/loader.rsrust/adapters/gemini/src/parser.rsrust/adapters/goose/src/parser.rsrust/adapters/goose/src/report.rsrust/adapters/grok/src/parser.rsrust/adapters/grok/src/report.rsrust/adapters/hermes/src/loader.rsrust/adapters/hermes/src/parser.rsrust/adapters/hermes/src/report.rsrust/adapters/kilo/src/parser.rsrust/adapters/kimi/src/parser.rsrust/adapters/openclaw/src/parser.rsrust/adapters/opencode/src/parser.rsrust/adapters/opencode/src/report.rsrust/adapters/pi/src/parser.rsrust/adapters/qwen/src/parser.rsrust/adapters/zcode/src/parser.rsrust/adapters/zcode/src/report.rsrust/crates/ccusage-adapter-all/src/loader.rsrust/crates/ccusage-adapter-all/src/tests.rsrust/crates/ccusage-adapter-all/src/types.rsrust/crates/ccusage-core/src/cost.rsrust/crates/ccusage-core/src/lib.rsrust/crates/ccusage-core/src/output.rsrust/crates/ccusage-core/src/summary.rsrust/crates/ccusage-core/src/types.rsrust/crates/ccusage/src/main.rsrust/crates/ccusage/tests/claude_cli.rs
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Reviewed changes
Reviewed the storedCost reporting feature across both commits on this branch, covering the core type and aggregation changes plus every adapter's stored-cost propagation.
- New
storedCostJSON key —ModelBreakdownsentries carry the stored part ofcostinautomode, omitted otherwise;--no-coststrips it. - Core plumbing —
LoadedEntry.stored_cost,stored_cost_for_modehelper, and summation in per-entry, bucket, and unified merges. - Per-adapter propagation — Claude, Copilot, Hermes, Kilo, OpenClaw, OpenCode, and Pi report the value their own
autorule bills. - Docs and tests — new Stored Costs section,
--no-costfield list, cost-modes link, plus CLI, aggregation, serialization, and snapshot tests.
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All reported issues were addressed across 41 files
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ccusage performance comparisonPR SHA: Performance comparison skipped. Base package URL was not ready before 300.000s. Fixture performance comparison requires a base package when --base-dir is not provided. Base package: |
ccusage performance comparisonPR SHA: Performance comparison skipped. Base package URL was not ready before 300.000s. Fixture performance comparison requires a base package when --base-dir is not provided. Base package: |
Grok's auto mode bills the recorded costUsdTicks figure when a turn carries one, but its loaded entries left stored_cost unset, so Grok breakdowns omitted storedCost even though cost included it. Raised by CodeRabbit, Cubic, and Pullfrog on #1903. Co-authored-by: erenozen <[email protected]>
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✅ No new issues found.
Reviewed changes since the prior pullfrog review (3c5fbca1) — one fix commit:
- Fixed Grok stored-cost propagation —
parse_session_filesnow setsstored_costviastored_cost_for_mode(cost_usd, mode)instead of hardcodingNone, so Grok breakdowns reportstoredCostexactly whenautomode bills the recordedcostUsdTicks. - Added Grok parser test —
auto_mode_marks_recorded_ticks_as_stored_costasserts the stored value is present inautomode with the correct USD conversion and absent undercalculateanddisplay.
Verified the fix is consistent end to end: cost_usd_from_ticks returns None for zero ticks, so only turns the auto rule actually bills produce a stored value.
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ccusage performance comparisonPR SHA: Performance comparison skipped. Base package URL was not ready before 300.000s. Fixture performance comparison requires a base package when --base-dir is not provided. Base package: |
ccusage performance comparisonPR SHA: Performance comparison skipped. Base package URL was not ready before 300.000s. Fixture performance comparison requires a base package when --base-dir is not provided. Base package: |
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Thanks |
Upstream tip: c76874e (2026-10-20, chore(pricing): update models.dev snapshot) Previous fork base: 0c58b88 (the upstream commit this fork was synced to) Synced 83 upstream commits on top of 0c58b88: 56 automated pricing snapshot refreshes and the following meaningful ones: 1cd29f5 chore(deps): update pnpm to v12.13.0 (ccusage#1907) e4f63ba chore(deps): update node.js to >=24.22.0 (ccusage#1908) 130e502 ci: regenerate bun.nix automatically (ccusage#1909) 259ec33 feat(adapter): report stored cost in JSON model breakdowns (ccusage#1903) c1eb448 chore: release v20.0.35 (ccusage#1901) 2a0875f ci(pricing): update snapshots on push to main and daily instead of hourly (ccusage#1914) b090428 chore(deps): update github/codeql-action action to v4.39.0 (ccusage#1912) 4dcf7f5 fix(nix): pin models-dev-gen remeda to models.dev's version and stop Renovate drift (ccusage#1915) 46edb28 fix(nix): stop the dev shell from copying the whole repository (ccusage#1917) 58ec8f1 fix(nix): let commits succeed in worktrees without a loaded dev shell (ccusage#1920) a570a6f fix(nix): vendor Cargo deps without import-from-derivation (ccusage#1918) f6d28c5 fix(antigravity): map model IDs 1418/1419 to gemini-4-argon (ccusage#1905) ce439e5 fix(antigravity): map model ID 1050 to gemini-3.1-flash-lite (ccusage#1902) e62a66f chore(deps): update pnpm to v12.14.0 (ccusage#1923) 117ae68 ci(nix): make the macOS Nix cache save a trimmed store with the Crane layers (ccusage#1921) 7a063a0 ci: shorten the Windows native build critical path (ccusage#1924) 85ebca3 perf(rust): move pricing snapshots into a leaf crate (ccusage#1922) 8fe3f47 perf(nix): build Crane layers with the binary's feature resolution (ccusage#1925) ac289aa perf(pricing): give the pricing refresh a verify-only TLS 1.3 rustls provider (ccusage#1927) d097f74 chore(deps): update rust crate rustls to 0.23.46 (ccusage#1928) f8aaf89 docs: use the compact pkg.pr.new URL for bunx previews [ci skip] (ccusage#1929) f56bb3d chore: release v20.0.36 (ccusage#1916) aaafb41 chore(deps): update dependency vitepress-plugin-group-icons to ^1.8.1 (ccusage#1931) 0861e7f fix(claude): count requestless resp_ content blocks once (ccusage#1935) 867c9f3 chore: release v20.0.37 (ccusage#1933) fa40bfd chore(deps): update songmu/tagpr action to v1.21.3 (ccusage#1937) de99d15 chore(deps): update rust crate zstd to 0.14.3 (ccusage#1936) Fork wins kept: the SQLite on-disk cache with --live-only and the per-namespace ledger, the pi adapter and its per-path namespaces, the OpenCode V2 loader, the FxHash/Cow hot paths, the table renderer, clear-cache, and the tag-only release workflow. Upstream's own release and tagpr machinery stays out. Hand-resolved conflicts: rust/adapters/claude/src/lib.rs: upstream's resp_ message-id dedupe (ccusage#1935) lands beside the fork's requestless replay and collapse_replays rules. rust/adapters/claude/src/README.md: upstream's wording for the msg_/resp_ exception. rust/Cargo.toml: zstd 0.14.3, keeping the fork's exact `=` pin style. .github/workflows/release.yaml: the fork's tag-only release, without upstream's tagpr job or the songmu/tagpr action bump. apps/ccusage/package.json, docs/package.json, package.json: keep 20.0.34; upstream's 20.0.37 bump is dropped. packages/ccusage-*/package.json (6 files): stay deleted; the fork ships no npm wrapper packages and the release workflow does not read them. rust/adapters/claude/src/daily.rs: stays deleted; the fork's daily path lives in lib.rs and shares the dedupe helper the fix changes. Fixes made while landing this sync, folded in so the merge stands green on its own: fix(ci): save the Nix store from the native build composites. The nested cache-nix-action read an empty primary-key at post-job and every native build failed; upstream's defer-save pattern is the fix. fix(rust): keep the agent-recorded cost for deleted sources. The recorded_cost ledger column carries it, so storedCost survives a deleted file. The ledger schema version stays at 2: the column is not a LedgerEntry field, so the blob layout is unchanged and the previously released binary keeps working. fix(rust): make the file fingerprint helper private, the one hawk finding. It is inherited from the pre-sync master, not introduced here. Keep 20.0.34 numbering; DO NOT push a v20.0.34 tag from this fork (release.yaml would publish fork bytes under upstream identity).

Closes #1898
Summary
In the default
autocost mode, amodelBreakdownsentry'scostadds togethercostUSDvalues stored in agent logs and costs calculated from the pricing table, and nothing in the JSON output says which part is which. This PR adds an optionalstoredCostkey: the part ofcostthat came from stored values. This follows the shape proposed in #1898 (thanks @erenozen).{"cacheCreationTokens":20,"cacheReadTokens":30,"cost":0.503792,"inputTokens":1500,"modelName":"claude-sonnet-4-20250514","outputTokens":100,"storedCost":0.5}The change is backward compatible:
storedCostappears only when at least one record in the breakdown used its stored cost inautomode.--mode calculate,--mode display, and breakdowns without stored costs produce the same bytes as before.--no-coststripsstoredCostalong with the other cost keys.What changed
ModelBreakdownhas a new field,stored_cost: Option<f64>. It is skipped during serialization when it isNone, and anadd_stored_costhelper sums it.LoadedEntrycarries a per-recordstored_cost, which travels the same path asmissing_pricing_model. A new core helper,stored_cost_for_mode, returns the stored value only inautomode.summary.rs: per-entry accumulation and the weekly/monthly buckets.daily.rs.--by-agentand--instancesmerges inccusage-adapter-all.autorule actually uses: Claude, Copilot, Grok (costUsdTicks), Hermes, Kilo, OpenClaw, OpenCode, and Pi. OpenCode and Hermes only use a positive stored cost; Pi ignores the stored cost when a pricing override applies. Hermes now receives the cost mode so thatstoredCoststays off outsideautomode. Its cost calculation is unchanged.docs/guide/json-output.md,storedCostadded to the--no-costfield list, and the "Mixed data" rule indocs/guide/cost-modes.mdnow links to the new section.The repo has no output JSON schema or TypeScript type for report output; the published schema covers config only. So the Rust type and the docs are the contract.
Testing
cargo test --workspacepasses. The three Copilot CLI JSON snapshots now showstoredCoston the unattributed AIU-credit breakdown, which comes from stored costs.storedCostis present inautomode, and absent under--mode calculate,--mode display, and--no-cost. It coversclaude daily,claude session,claude monthly, anddaily --by-agent.stored_costinautomode only.summary.rsaggregation and bucket-merge test.output.rstests for serialization and for--no-coststripping.cargo clippy --workspace --all-targets -- -D warningsandcargo fmtare clean, andoxfmt --checkpasses on the changed docs.Co-authored-by: erenozen [email protected]
Summary by cubic
Adds an optional
storedCostkey tomodelBreakdownsentries in JSON reports, so the part ofcostthat came from stored agent-log values is distinguishable from the pricing-table-calculated part inautomode. Closes #1898.storedCostappears only when at least one record in the breakdown used its stored cost;calculateanddisplaymodes never emit it, and--no-coststrips it with the other cost keys.autorule uses.--no-costfield list.Written for commit 44cae65. Summary will update on new commits.
Summary by CodeRabbit
autocost mode, JSON model breakdowns can includestoredCost, showing the portion of reported cost sourced from stored log values. Models without stored costs omit the field.calculateanddisplaymodes do not emitstoredCost, and that--no-costremoves it along with other cost fields.