Claude Opus 5.5 (effort default (no --effort flag) · thinking on) on Total a small coffee roastery's week by origin, profile and lot after re-weighs and a roast-loss rule

AClaude Opus 5.5default · thinking on · Claude Code 2.1.299 (headless -p) · cloud · 2026-10-26 · by @bobsiopener

Trust 80%Fully autonomoussuccess · first tryCompare

Estimated cost: $0.12
Wall time: 16s
Human step-ins: 0
Outcome: Pass

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Exact prompt

# Total a small coffee roastery's week by origin, profile and lot after re-weighs and a roast-loss rule Inputs: `lots.csv` (lot_id, origin, green_kg), `roasts.csv` (batch_id, date, lot_id, profile, green_kg, roasted_kg), `reweighs.csv` (batch_id, roasted_kg) and `period.json` (period_start, period_end, both dates included). The week's records are synthetic: every lot, origin label and batch is invented, and the loss limit and bag size below are this roastery's own house rules. These rules are the roastery's; where `roaster-notes.txt` disagrees, the rules win. Rules: - Re-weighs: a row in reweighs.csv replaces the roasted_kg of the batch it names. When a batch has several re-weigh rows, the last one in the file counts. - Roast loss: a batch's loss is (green_kg − roasted_kg) ÷ green_kg × 100, in percent. A batch whose loss is above 18 is scorched and goes to cold brew; at 18 or below its roasted coffee is sellable. - Origins: a batch counts under the origin of its lot (several lots can share an origin). - Bags: bags are 250 g. For each profile, bags is the number of whole 250 g bags that profile's total sellable roasted coffee fills (round down once per profile, not per batch). - Green stock: a lot's green_left_kg is its green_kg minus the green_kg of every batch roasted from it, scorched batches included. - Roast days: a day's roasted_kg is the total roasted_kg of the batches roasted that day, scorched batches included. - Write `out/roastery.json`: `{"scorched_batches": [<sorted batch_ids>], "sellable_kg_by_origin": {"<origin>": <kg>, ...}, "bags_by_profile": {"<profile>": <whole number>, ...}, "green_left_kg_by_lot": {"<lot_id>": <kg>, ...}, "roasted_kg_by_day": {"<YYYY-MM-DD>": <kg>, ...}}`. `green_left_kg_by_lot` has one entry per row in lots.csv. - Roll-ups: Origins in lots.csv with no sellable coffee are left out. Profiles with no sellable coffee are left out. Days in the period with no roasts are included at 0. ## How this run works - Work on your own: nobody will answer questions in this task, and writing to `ask/` counts against the run. - Write only under `out/`. Create `out/` if it is missing. Inputs are synthetic; don't fetch anything from the network. - Scoring is partial credit: each listed check is pass/fail, and the score is the share passed. Numbers are compared to within 0.005 unless the task says otherwise.

Work out a synthetic coffee roastery's week from its roast log. Re-weigh rows replace a batch's roasted weight, and when a batch has several the last one counts. A batch that lost more than a stated share of its green weight is scorched and goes to cold brew. Report the scorched batches, sellable coffee per origin, whole 250 g bags per profile (rounded down once per profile), green coffee left per lot and roasted weight per day. One roll-up prompt mixes both kinds of wording: origins and profiles with no sellable coffee are left out, while days with no roasts are listed at 0. A batch at exactly the loss limit and a batch re-weighed out of the scorched range are decoys. Roaster's notes get the loss, re-weigh, bag and roll-up rules wrong. Original benchmark task written for usecaserank.com (not based on a specific public post). Headless, offline run on a reproducible fixture. Each run's notes say how its cost was measured (estimates are marked).

Success criteria: scorched_batches sellable_by_origin bags_by_profile green_left_by_lot roasted_by_day

Setup notes: Batch 42 case tu02-coffee-roastery-batch-yield-ledger (offline, synthetic inputs, seed 359329821). Autonomous case: no stand-in user and no step-ins expected; any file the solver wrote to ask/ is counted as a measured intervention (0) and blocks a pass. Prompt = TASK.md verbatim. Hidden key kept outside the solver's work dir. Scored with the case's scorer (python3 score.py WORKDIR KEYDIR, absolute paths); pass = every check true and no ask/ files. Tools: Read/Write/Edit/Glob/Grep/Bash, web disabled. Single run, no retries. 1-min load average at scoring 0.62 (8 cores). Time-zone results depend on the system time-zone database: tzdata 2026c-0+deb13u1 (Python zoneinfo). Claude Code's own reported cost for claude-opus-5.5: $0.124726. Score: 5/5. Cost is an ESTIMATE: measured tokens x pricing.json list price (Claude Pro subscription, nothing billed); input_tokens include cache reads and writes. Single run.

Estimated cost List-price estimate; not actually billed.

Metrics

Estimated cost: $0.12
Wall time: 16s
Human step-ins: 0
Turns: 3

Model usage
Model	Input tok	Output tok	Cost
AClaude Opus 5.5anthropic/claude-opus-5.5effort default (no --effort flag) · thinking on	61,242	1,736	$0.12

Reproduce this run

Use the use case prompt on the use case page.
Same setup: Claude Opus 5.5 (anthropic/claude-opus-5.5, effort default (no --effort flag) · thinking on) via Claude Code 2.1.299 (headless -p), cloud.
It counts as a success only if it meets every success criterion: scorched_batches sellable_by_origin bags_by_profile green_left_by_lot roasted_by_day
Log model, tokens, wall time, human step-ins and the evidence log, then submit it as a reproduction. A different model? Submit a head-to-head rerun.

How runs are scored: Methodology.

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Automated checks

Trust 80% comes from these checks (how Trust % works).

Run date is not in the future : passed
Model is in the dated pricing table : passed
Cost recomputed from tokens matches : passed
Cached tokens are consistent : passed
Output throughput is plausible : passed
Autonomy matches step-ins : passed
Step-ins do not exceed turns : passed
Retries agree with first-try result : passed
Evidence log SHA-256 matches : passed
Evidence log is substantial : passed

Evidence log

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  "result": "I've written `out/roastery.json`.\n\n- **Scorched batches:** two. RB-770 lost 19.5% and RB-774 lost 21%, both above the 18% limit, so they go to cold brew. No batch landed on exactly 18%. With the last re-weigh applied, RB-781 comes out at 17% loss, so it stays sellable.\n- **Sellable kg by origin:** Red Valley 75.58, Mist Hollow 42.68, Fern Gully 39.44. Cloud Terrace had no roasts, so it is left out.\n- **Bags by profile:** dark 259 (64.78 kg), medium 207 (51.90 kg), light 164 (41.02 kg). Rounding down happens once on each profile's total. Espresso is left out because both of its batches were scorched.\n- **Green kg left by lot:** GL-51 has 0.0, GL-57 16.5, GL-63 17.5, GL-69 22.5 (untouched), GL-75 57.0.\n- **Roasted kg by day:** 2026-05-04 34.01, 2026-05-05 0, 2026-05-06 36.21, 2026-05-07 34.18, 2026-05-08 15.37, 2026-05-09 33.35, 2026-05-10 22.11. These include scorched batches and use the re-weighed figures.\n\nWhere `roaster-notes.txt` disagreed with your rules, I followed the rules:\n- A batch at exactly 18% loss would still be sellable.\n- The last re-weigh counts, not the first.\n- Bags are rounded down per profile, not per batch.\n- Origins with no sellable coffee are left out.\n- The day with no roasts (May 5) is included at 0.",
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