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Claude Opus 5.5 (effort default (no --effort flag) · thinking on) on Work out a week's hourly pay with daily overtime, double time over 12 hours, split shifts and a weekly 40-hour rule

AClaude Opus 5.5default · thinking on · Claude Code 2.1.299 (headless -p) · cloud · 2026-10-22 · by @bobsiopener

Trust 80%Fully autonomoussuccess · first try
Estimated cost
$0.11
Wall time
18s
Human step-ins
0
Outcome
Pass

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Summary

Exact prompt

# Work out a week's hourly pay with daily and weekly overtime Inputs: `staff.csv` (employee id, hourly rate) and `timesheet.csv` (every shift clocked in the week Monday 2026-10-12 to Sunday 2026-10-18: start, end and unpaid break in minutes). Times are on the quarter hour and no shift crosses midnight. Pay rules: - A shift's hours = end - start - unpaid break. - If someone works two shifts in one day, add them together before applying the daily rule. - Daily overtime: hours over 8 in a day are paid at 1.5x, and hours over 12 in a day at 2x. - Weekly overtime: hours that are not daily overtime count as regular until the week's regular hours reach 40; regular hours beyond 40 (counting days in date order) are paid at 1.5x instead. - Gross pay = hourly rate x (regular + 1.5 x overtime + 2 x double time), rounded to the cent half-up per employee. Write `out/payroll.json`: `{"regular_hours": {"<employee_id>": <hours>, ...}, "overtime_hours": {...}, "double_hours": {...}, "gross": {"<employee_id>": <gross pay>, ...}, "total_gross": <sum of the rounded gross figures>}` with every employee in `staff.csv` (an employee with no shifts has 0 everywhere). ## 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.

Pay a week of hourly staff from their clocked shifts. Hours over 8 in a day are overtime and over 12 are double time, two shifts on one day are added before the daily rule, and regular hours beyond 40 in the week become overtime. Applying the daily rule per shift, skipping double time or forgetting the weekly rule each change someone's gross pay. 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: split_shifts double_time weekly_overtime gross_pay

Setup notes: Batch 23 case y01-overtime-timesheets (offline, synthetic inputs, seed 582426305). 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: $0.108421. Score: 4/4. 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
$0.11
Wall time
18s
Human step-ins
0
Turns
3
Model usage
ModelInput tokOutput tokCost
AClaude Opus 5.5anthropic/claude-opus-5.5effort default (no --effort flag) · thinking on57,4261,657$0.11

Reproduce this run

  1. Use the use case prompt on the use case page.
  2. 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.
  3. It counts as a success only if it meets every success criterion: split_shifts double_time weekly_overtime gross_pay
  4. 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

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Evidence log
[
 {
  "duration_api_ms": 17173,
  "stop_reason": "end_turn",
  "session_id": "[REDACTED]",
  "total_cost_usd": 0.10842080000000001,
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   "output_tokens_details": {
    "thinking_tokens": 128
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   "server_tool_use": {
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   "service_tier": "standard",
   "cache_creation": {
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      "ephemeral_5m_input_tokens": 0,
      "ephemeral_1h_input_tokens": 1283
     },
     "type": "message"
    }
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   "speed": "standard",
   "fallback_credit": null
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  "modelUsage": {
   "claude-opus-5-5": {
    "inputTokens": 6,
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    "cacheReadInputTokens": 49244,
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    "webSearchRequests": 0,
    "costUSD": 0.10842080000000001,
    "contextWindow": 1000000,
    "maxOutputTokens": 128000,
    "thinkingTokens": 128,
    "canonicalModel": "claude-opus-5-5",
    "provider": "firstParty",
    "costBasis": "list"
   }
  },
  "permission_denials": [],
  "terminal_reason": "completed",
  "fast_mode_state": "off",
  "fast_mode_disabled_reason": "sdk_opt_in_required",
  "subagent_stats": {
   "spawned": 0,
   "requested": {
    "background": 0,
    "foreground": 0,
    "unset": 0
   },
   "started_in_background": 0,
   "max_depth": 0,
   "spawned_by_subagents": 0,
   "completed": 0,
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   "killed": {
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   "refused": {
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   "by_type": {}
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  "safety_stops": 0,
  "is_error": false,
  "num_turns": 3,
  "subtype": "success",
  "api_error_status": null,
  "result": "I've written `out/payroll.json`. Total gross for the week is **4,145.87**. I haven't checked the figures by hand, apart from one combined day noted below.\n\n| Employee | Regular | Overtime (1.5x) | Double (2x) | Gross |\n|---|---|---|---|---|\n| E8380 | 27.00 | 0 | 0 | 399.33 |\n| E8641 | 40.00 | 10.50 | 0.50 | 866.57 |\n| E5122 | 40.00 | 8.25 | 0 | 1,138.63 |\n| E1523 | 31.00 | 2.25 | 0 | 528.69 |\n| E9894 | 26.25 | 0 | 0 | 438.64 |\n| E1705 | 40.00 | 12.75 | 1.25 | 774.01 |\n| E2466 | 0 | 0 | 0 | 0 |\n\n- **Weekly overtime** goes into the overtime column with daily overtime, since both are paid at 1.5x. E5122's 8.25 overtime hours are all weekly overtime: no single day of theirs went over 8 hours.\n- **Two shifts in a day:** E1523 worked twice on 2026-10-14 (5.5 + 4.75 = 10.25 hours). Adding the shifts together gives 2.25 hours of daily overtime; I checked this one by hand.\n- **No shifts:** E2466 is in `staff.csv` but has no shifts, so they show 0 everywhere.\n- **Rounding:** Hours were added up in whole minutes, so there's no rounding drift. Each person's gross was rounded half-up to the cent, and the total is the sum of those rounded figures.\n\nThe script is at `/tmp/pay.py`, outside `out/` because only that folder may be written to. Run it as `python3 -I /tmp/pay.py staff.csv timesheet.csv out/payroll.json` to rebuild the file.",
  "ttft_ms": 2547,
  "type": "result",
  "duration_ms": 17557,
  "uuid": "[REDACTED]",
  "ttft_stream_ms": 1657,
  "time_to_request_ms": 282,
  "first_content_frame_ms": 1657,
  "queued_turn_count": 0,
  "result_index": 0
 }
]

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