Claude Opus 5.5 (effort default (no --effort flag) · thinking on) on Cost a restaurant's menu dishes from recipes with trim yields and unit conversions, and build the week's supplier order in whole cases

AClaude Opus 5.5default · thinking on · Claude Code 2.1.299 (headless -p) · cloud · 2026-10-24 · by @bobsiopener

Trust 80%Fully autonomoussuccess · first tryCompare

Estimated cost: $0.12
Wall time: 17s
Human step-ins: 0
Outcome: Pass

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Exact prompt

# Cost a restaurant's menu dishes from recipes with trim yields and unit conversions, and build the week's supplier order in whole cases Inputs: `ingredients.csv` (ingredient, case_size, case_unit, case_price, yield_pct, on_hand), `recipes.json` (each dish's menu_price and recipe lines of ingredient, qty, unit), `forecast.csv` (dish, portions for next week) and `order-rules.json` (safety_pct). All data is synthetic; amounts are in dollars. These rules are the kitchen's policy; where `chef-note.txt` disagrees, the rules win. Rules: - Units: 1 kg = 1000 g and 1 L = 1000 ml; each is a count. A recipe line's qty is the usable amount after trimming; case_size and on_hand are in the ingredient's case_unit. - Plate cost: a recipe line costs (qty converted to the case_unit) / (yield_pct / 100) × case_price / case_size. A dish's plate cost is the exact sum of its lines, rounded half-up to the cent once (don't round line by line). - Food cost: food_cost_pct = the dish's rounded plate cost / menu_price × 100, rounded half-up to one decimal place. - Ordering: an ingredient's purchase need for the week is the sum over dishes of portions × qty (in the case_unit) / (yield_pct / 100), plus safety_pct percent of that sum. Order the smallest whole number of cases that brings on_hand up to at least the purchase need, or 0 if on_hand already covers it. - Order total: the sum of cases × case_price over all ingredients. - Write `out/kitchen.json`: `{"dishes": {"<dish>": {"plate_cost": <dollars>, "food_cost_pct": <percent>}, ...}, "orders": {"<ingredient>": <cases>, ...}, "order_total": <dollars>}` with every ingredient in `orders`, including those needing 0 cases. ## 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.

Cost a small restaurant's synthetic menu from its recipes and turn next week's forecast into a supplier order. Recipe quantities in grams and millilitres convert to case units, trim yields raise the amount bought, plate costs are rounded once per dish, food-cost percentages are rounded to one decimal, and each ingredient is ordered in whole cases after on-hand stock and a safety margin. A chef's note gets the yield, rounding, case and safety-stock 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: units plate_cost food_cost ordering order_total

Setup notes: Batch 35 case tw03-restaurant-recipe-costing-order (offline, synthetic inputs, seed 2022031195). 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 0.36 (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: $0.118436. 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: 17s
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	59,491	1,735	$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: units plate_cost food_cost ordering order_total
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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    "canonicalModel": "claude-opus-5-5",
    "provider": "firstParty",
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  "permission_denials": [],
  "terminal_reason": "completed",
  "fast_mode_state": "off",
  "fast_mode_disabled_reason": "sdk_opt_in_required",
  "subagent_stats": {
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   "requested": {
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  "subtype": "success",
  "api_error_status": null,
  "result": "I've written `out/kitchen.json` following the rules in the brief. I didn't check the results against anything outside my own script (exact fractions, rounded half-up only at the end), but I hand-checked the egg and leek orders and they match.\n\n**Dishes**\n\n| Dish | Plate cost | Food cost % |\n|---|---|---|\n| Lemon chicken thighs | $10.47 | 44.6 |\n| Braised beef and mash | $28.08 | 100.5 |\n| Shallot tart | $4.39 | 26.6 |\n| Chicken and leek pie | $12.67 | 39.6 |\n\n**Braised beef and mash costs more to make than it sells for:** $28.08 against a $27.95 menu price. Most of that comes from the leeks ($10.37 a plate) and the chicken thigh ($10.05), both because of their low trim yields.\n\n**Order:** $4,791.81 in total.\n\n| Ingredient | Cases |\n|---|---|\n| Olive oil | 1 |\n| Butter | 1 |\n| Arborio rice | 4 |\n| Salmon fillet | 0 |\n| Eggs | 3 |\n| Shallots | 5 |\n| Parsley | 18 |\n| Beef chuck | 6 |\n| Leeks | 17 |\n| Chicken thigh | 6 |\n\nSalmon fillet is listed with 0 cases because no recipe uses it.\n\nThe chef's note asked to skip trim yields, round each line, order to the nearest case and drop the spare stock. Those all conflict with the rules, so I followed the rules: trim yields applied, rounding done once per dish, cases rounded up, and the 10% safety margin included.",
  "ttft_ms": 2280,
  "type": "result",
  "duration_ms": 16201,
  "uuid": "[REDACTED]",
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  "time_to_request_ms": 182,
  "first_content_frame_ms": 1069,
  "queued_turn_count": 0,
  "result_index": 0
 }
]