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Claude Sonnet 5.5 (effort default (no --effort flag) · thinking on) on Pay holiday-let owners for a month with stays crossing the month end, platform commission, cleaning charges and a capped tourist tax

AClaude Sonnet 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
$0.06
Wall time
12s
Human step-ins
0
Outcome
Pass

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Summary

Exact prompt

# Pay holiday-let owners for October 2026 Inputs: `bookings.csv` (every booking touching October 2026 across the agency's properties, from a direct-booking site or a listing platform), `properties.json` (property -> owner) and `rules.json`. Owner statement rules: - Cancelled bookings are ignored. - Only nights in October 2026 count: a stay that crosses into or out of October pays the owner for its October nights only (a night belongs to the date you sleep there; the check-out date is not a night). - Room revenue = October nights x `nightly_rate`. Platform bookings lose `platform_commission_pct` of their room revenue; direct bookings don't. - Management fee = `management_fee_pct` of room revenue after platform commission. - Cleaning: the owner pays `cleaning_fee` for each stay that checks out in October. - Tourist tax is collected from guests for the council and is not owner income: `tourist_tax_per_adult_night` per adult per night, for at most the first `tourist_tax_max_nights` nights of a stay (counted from check-in); report the October nights' tax per property. - Payout = room revenue after commission - management fee - cleaning, rounded half-up to the cent per property. Tourist tax is rounded the same way. Write `out/payouts.json`: `{"payout": {"<property>": <payout>, ...}, "tourist_tax": {"<property>": <tax>, ...}, "total_payout": <sum of rounded payouts>}` for every property in `properties.json`. ## 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.

Write each owner's monthly statement for a holiday-let agency. Only nights inside the month count, platform bookings lose commission before the management fee is taken, cleaning is charged per check-out, and the guests' tourist tax is reported separately with a cap on nights per stay. Counting whole stays, taking the fee on gross revenue or ignoring the tax cap each change the statements. 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: october_nights management_fee tourist_tax_cap payout

Setup notes: Batch 23 case y05-holiday-let-payouts (offline, synthetic inputs, seed 106485754). 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 0.28 (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-sonnet-5.5: $0.056802. 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
$0.06
Wall time
12s
Human step-ins
0
Turns
4
Model usage
ModelInput tokOutput tokCost
AClaude Sonnet 5.5anthropic/claude-sonnet-5.5effort default (no --effort flag) · thinking on79,2661,424$0.06

Reproduce this run

  1. Use the use case prompt on the use case page.
  2. Same setup: Claude Sonnet 5.5 (anthropic/claude-sonnet-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: october_nights management_fee tourist_tax_cap payout
  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

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

Evidence log
[
 {
  "duration_api_ms": 10830,
  "stop_reason": "end_turn",
  "session_id": "[REDACTED]",
  "total_cost_usd": 0.056802099999999994,
  "usage": {
   "input_tokens": 8,
   "cache_creation_input_tokens": 8877,
   "cache_read_input_tokens": 70381,
   "output_tokens": 1424,
   "output_tokens_details": {
    "thinking_tokens": 56
   },
   "server_tool_use": {
    "web_search_requests": 0,
    "web_fetch_requests": 0
   },
   "service_tier": "standard",
   "cache_creation": {
    "ephemeral_1h_input_tokens": 8877,
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   "inference_geo": "global",
   "iterations": [
    {
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     "output_tokens": 301,
     "cache_read_input_tokens": 20266,
     "cache_creation_input_tokens": 1150,
     "cache_creation": {
      "ephemeral_5m_input_tokens": 0,
      "ephemeral_1h_input_tokens": 1150
     },
     "type": "message"
    }
   ],
   "speed": "standard",
   "fallback_credit": null
  },
  "modelUsage": {
   "claude-sonnet-5-5": {
    "inputTokens": 8,
    "outputTokens": 1424,
    "cacheReadInputTokens": 70381,
    "cacheCreationInputTokens": 8877,
    "webSearchRequests": 0,
    "costUSD": 0.056802099999999994,
    "contextWindow": 1000000,
    "maxOutputTokens": 128000,
    "thinkingTokens": 56,
    "canonicalModel": "claude-sonnet-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,
   "failed": 0,
   "killed": {
    "parent": 0,
    "user": 0,
    "system": 0
   },
   "refused": {
    "depth_limit": 0,
    "concurrency_limit": 0,
    "budget": 0
   },
   "by_type": {}
  },
  "safety_stops": 0,
  "is_error": false,
  "num_turns": 4,
  "subtype": "success",
  "api_error_status": null,
  "result": "I've written `out/payouts.json` with a payout and a tourist tax figure for all seven properties. The total payout is 22,150.78. I haven't checked the figures independently beyond the script's own output.\n\n| Property | Payout | Tourist tax |\n|---|---|---|\n| Harbour View | 3,977.99 | 128.00 |\n| Seaspray | 3,938.31 | 144.00 |\n| Pilot House | 2,246.61 | 140.00 |\n| The Granary | 2,172.07 | 196.00 |\n| Mill Loft | 3,520.06 | 94.00 |\n| Curlew Cottage | 3,444.87 | 134.00 |\n| Old Forge | 2,850.87 | 102.00 |\n\nThe two cancelled bookings were left out. The data had no missing or odd values, so I made no other assumptions. Rounding to the cent is half-up per property, as specified.",
  "ttft_ms": 1983,
  "type": "result",
  "duration_ms": 11197,
  "uuid": "[REDACTED]",
  "ttft_stream_ms": 1107,
  "time_to_request_ms": 233,
  "first_content_frame_ms": 1107,
  "queued_turn_count": 0,
  "result_index": 0
 }
]

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