# Tokens — working record (thakur-mzv-relations-shuffle-only)

Per-dump working ledger. It is consolidated into the repo master `ai/tokens.md`.

### 2026-10-23T15:08:26-04:00__frontier-dump__thakur-mzv-relations-shuffle-only

**Task:** Are all F_q[t] MZV relations consequences of shuffle relations?. Provenance: `ai/2026-10-23-thakur-mzv-relations-shuffle-only/ai-usage.md` (same ID).

**Task subtotal (priced rows only):** 213,000 tokens, estimated **$0.1917 USD** (bound $0.0426–$4.26), token charges only. Covers the fork only; the caller's and accounting delegate's shares are not recorded.

#### Fork — primary / worker (priced)

| field | value |
| --- | --- |
| Task ID | `2026-10-23T15:08:26-04:00__frontier-dump__thakur-mzv-relations-shuffle-only` |
| Agent / call ID | fork 6 of 6 (per its scratchpad folder `fork6-src/`); harness agent ID not recorded |
| Date | 2026-10-23, America/New_York |
| Model | claude-opus-5-5 (Claude Opus 5.5); effort inherited from caller (low) |
| Tokens | unsplit aggregate ≈213,000 (harness per-subagent total from the completion notification, relayed by the caller, rounded to the nearest thousand; no class split exposed). Assumed split, following this ledger's prior convention: cache-read 191,700 (90%) · input 17,040 (8%) · output 4,260 (2%) · cache write 5m 0 · cache write 1h 0 |
| Source | estimated (class split assumed on the harness aggregate; the aggregate itself is a measured but rounded harness figure) |
| Rates | input 4.00/M · cache write 5m 5.00/M (1.25x) · cache write 1h 8.00/M (2x) · cache read 0.20/M (0.05x, Opus 5.5-specific) · output 20.00/M |
| Rate basis | checked 2026-10-23 at platform.claude.com/docs/en/about-claude/pricing (no effective date published) |
| Cost (USD) | 0.1917 = (191,700×0.20 + 17,040×4.00 + 4,260×20.00)/1e6. Token charges only; standard (non-fast, non-batch) rates assumed |
| Duration | ≈51 min (fork's own span; overlaps the other five forks; not summed) |
| Bound | min 0.0426 (all tokens at cache read) · max 4.26 (all tokens at output) |
| Notes | Token discrepancy: `report.md` provenance says ≈212k; the caller's relayed harness notification says ≈213k. The caller's figure is used. WebFetch/web search calls: count not recorded; WebSearch API list price $10 per 1,000 searches, not in the figure. Sage runs: local CPU, no charge. Harness tool uses: 48. Billing mode (API vs subscription) not recorded; the figure is a notional API list-rate figure. Fast-mode premium not applied (mode not recorded). |

#### Caller — parent Claude Code session (unpriced)

| field | value |
| --- | --- |
| Task ID | `2026-10-23T15:08:26-04:00__frontier-dump__thakur-mzv-relations-shuffle-only` |
| Agent / call ID | parent Claude Code session (ID not recorded) |
| Date | 2026-10-23, America/New_York (accounting written ≈15:08–15:20 −04:00) |
| Model | claude-opus-5-5, effort low |
| Tokens | not recorded (no class counts or aggregate exposed to this delegate) |
| Source | unavailable |
| Rates | not applied |
| Rate basis | not applicable |
| Cost (USD) | unpriced / unknown, not zero |
| Duration | not recorded |
| Bound | unavailable |
| Notes | Coordinated all six forks and saved each report.md; its tokens are shared across the batch and were not exposed per task. |

#### Accounting delegate (unpriced)

| field | value |
| --- | --- |
| Task ID | `2026-10-23T15:08:26-04:00__frontier-dump__thakur-mzv-relations-shuffle-only` |
| Agent / call ID | accounting delegate (Claude Code subagent; ID not recorded) |
| Date | 2026-10-23, America/New_York (accounting written ≈15:08–15:20 −04:00) |
| Model | claude-opus-5-5 |
| Tokens | not recorded (no class counts or aggregate exposed to this delegate) |
| Source | unavailable |
| Rates | not applied |
| Rate basis | not applicable |
| Cost (USD) | unpriced / unknown, not zero |
| Duration | not recorded |
| Bound | unavailable |
| Notes | Wrote the accounting for all six dumps in one run; its tokens are not visible to itself and are not split per task. One WebFetch of the pricing page (no per-call charge listed for web fetch). |

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