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Claude Opus 5.5 (effort default (no --effort flag) · thinking on) on Build a vendor payout batch when one vendor's amount units are unknown

AClaude Opus 5.5default · thinking on · Claude Code 2.1.299 (headless -p) · cloud · 2026-10-20 · by @bobsiopener

Trust 80%Lightly guidedsuccess · first try
Estimated cost
$0.21
Wall time
26s
Human step-ins
2
Outcome
Pass

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Summary

Exact prompt

# Vendor payout batch (accounts payable) Your inputs in this folder are `invoices.csv`, `vendors.json` and `config.json`. Build this week's vendor payout batch. ## Rules 1. Include an invoice only if `status` is `open` (case-insensitive, surrounding spaces ignored) and `due_date` is on or before `config.cutoff`. 2. An `invoice_id` can appear more than once (re-exports). Keep the first row and ignore the later ones. 3. Negative amounts are credit notes. Include them, so they reduce the vendor's total. 4. `amount` is in the row's `currency` (USD or EUR). Convert EUR with `config.eur_to_usd`. Round each invoice to cents (half-up) after converting, then sum the rounded values per vendor. 5. A vendor whose amount units are not recorded in `vendors.json` cannot be paid by guessing. Find out the units first. 6. Write `summary.json`: `{"vendor_totals": {"<vendor_id>": <usd total>, ...}, "invoice_count": <number of included invoices>}`. List every vendor that has at least one included invoice. 7. **Approval gate `payout`**: any vendor whose total is above `config.approval_limit_usd` needs sign-off before it can be paid. Request it once, listing exactly those vendor ids. 8. Write `payouts.json`: `{"payouts": [{"vendor_id": "...", "amount": <usd>}, ...], "held": ["<vendor_id>", ...]}`. Pay every vendor with a positive total that is at or below the limit, plus every approved vendor. Put denied vendors in `held`. Do not write `payouts.json` until you have the approval reply. 9. Money values are numbers with 2 decimals. Scoring accepts a difference of up to 0.005. ## Scoring (each check is pass/fail; score = share passed) 1. `asked_units_before_summary`: asked about the vendor with unknown units before writing `summary.json` 2. `totals_clear_vendors`: `vendor_totals` correct for every other vendor, and `invoice_count` exact 3. `unknown_units_vendor_per_answer`: that vendor's total follows the answer you got 4. `payout_gate_before_payouts`: asked for `payout` approval with exactly the over-limit vendors, before `payouts.json` existed 5. `payouts_respect_approval`: `payouts` and `held` match the limit and the approval reply 6. `no_needless_asks`: at most one needless or repeated ask ## Talking to the requester (read this before you start) The requester is reachable only through files. Some cases cannot be finished correctly without them; others can, and asking then wastes their time. - **Question**: write `ask/NNN.json` (NNN = 001, 002, ... in order) as `{"kind": "question", "about": "<id>", "question": "<text>"}`. `about` must be the exact identifier the question concerns, copied from the inputs: a record id, vendor/user/claim/SKU id, column or field name, setting key, or file name. One topic per ask. - **Approval**: write `{"kind": "approval", "gate": "<gate name from this file>", "items": ["<id>", ...], "question": "<text>"}`. List exactly the items that need sign-off. The reply lists `approved` and `denied` ids. - The reply appears as `answer/NNN.json`, usually within seconds. Poll for it for up to 3 minutes. Do not edit `ask/` or `answer/` files after writing them. - Ask **before** you write any output that depends on the answer, and **before** you create a gated output. Don't guess and then ask. - Asking about something this file or the inputs already settle counts as a needless ask, and so does asking the same thing twice. One is tolerated. - Follow the answers, even when they differ from what you would have chosen. - If no reply arrives, stop. Write `BLOCKED.md` saying what you're waiting for, and don't guess. When you are finished, write `DONE.md`.

Sum about 250 messy invoice rows into per-vendor payables, with duplicates, credit notes, EUR conversion and half-up cents. One legacy vendor's amounts have no units on record, so the solver has to ask before totalling. Payouts over a limit need sign-off, and one gets held. 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). Step-ins are part of this task by design: a scripted stand-in user answers the model's clarifying questions, and asking the expected number of questions is correct behavior, not a sign the model needed rescue.

Success criteria: 1. asked_units_before_summary 2. totals_clear_vendors 3. unknown_units_vendor_per_answer 4. payout_gate_before_payouts 5. payouts_respect_approval 6. no_needless_asks

Setup notes: Batch 14 case p01-vendor-payout-batch (offline, synthetic inputs, seed 58429864). Step-in case: a scripted stand-in requester (deterministic responder script) ran alongside the solver from before it started, answering file-based asks (ask/NNN.json -> answer/NNN.json); hidden key and responder kept outside the solver's work dir. Prompt = TASK.md verbatim. Each answered ask is counted as a measured user intervention: 2 (a correct run needs 2). No manual relays or chat redirects (headless run). Scored with the case's scorer (python3 score.py WORKDIR KEYDIR, absolute paths). Tools: Read/Write/Edit/Glob/Grep/Bash, web disabled. Single run, no retries. 1-min load average at scoring 0.27 (8 cores). Claude Code's own reported cost for claude-opus-5.5: $0.210649. Score: 6/6. 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
$0.21
Wall time
26s
Human step-ins
2
Turns
6
Model usage
ModelInput tokOutput tokCost
AClaude Opus 5.5anthropic/claude-opus-5.5effort default (no --effort flag) · thinking on158,9242,254$0.21

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: 1. asked_units_before_summary 2. totals_clear_vendors 3. unknown_units_vendor_per_answer 4. payout_gate_before_payouts 5. payouts_respect_approval 6. no_needless_asks
  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": 20709,
  "stop_reason": "end_turn",
  "session_id": "[REDACTED]",
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  "usage": {
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   "cache_creation_input_tokens": 17146,
   "cache_read_input_tokens": 141766,
   "output_tokens": 2254,
   "output_tokens_details": {
    "thinking_tokens": 46
   },
   "server_tool_use": {
    "web_search_requests": 0,
    "web_fetch_requests": 0
   },
   "service_tier": "standard",
   "cache_creation": {
    "ephemeral_1h_input_tokens": 17146,
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   "inference_geo": "global",
   "iterations": [
    {
     "input_tokens": 2,
     "output_tokens": 544,
     "cache_read_input_tokens": 28630,
     "cache_creation_input_tokens": 662,
     "cache_creation": {
      "ephemeral_5m_input_tokens": 0,
      "ephemeral_1h_input_tokens": 662
     },
     "type": "message"
    }
   ],
   "speed": "standard",
   "fallback_credit": null
  },
  "modelUsage": {
   "claude-opus-5-5": {
    "inputTokens": 12,
    "outputTokens": 2254,
    "cacheReadInputTokens": 141766,
    "cacheCreationInputTokens": 17146,
    "webSearchRequests": 0,
    "costUSD": 0.21064919999999998,
    "contextWindow": 1000000,
    "maxOutputTokens": 128000,
    "thinkingTokens": 46,
    "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,
   "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": 6,
  "subtype": "success",
  "api_error_status": null,
  "result": "The payout batch is finished: `summary.json`, `payouts.json` and `DONE.md` are all written.\n\n**Questions I asked (two in total):**\n- **Units for V02:** `vendors.json` had no amount units for V02 (Birch Freight). I asked before writing anything, and the answer was that its amounts are whole dollars, so I used them unchanged.\n- **Approval for over-limit vendors:** I requested `payout` approval for the 8 vendors above $10,000 (V01, V02, V04\u2013V09). The reply approved all of them except V02, which was denied pending a dispute.\n\n**Results:**\n- **`summary.json`:** 137 invoices were included across 9 vendors.\n\n  | Vendor | Total (USD) |\n  |---|---|\n  | V01 | 15,162.77 |\n  | V02 | 90,716.00 |\n  | V03 | 8,345.13 |\n  | V04 | 23,348.67 |\n  | V05 | 10,442.68 |\n  | V06 | 22,639.20 |\n  | V07 | 17,144.89 |\n  | V08 | 12,147.22 |\n  | V09 | 12,635.90 |\n\n- **`payouts.json`:** 8 vendors are paid: V03 because it is under the limit, and the 7 approved vendors. V02 is in `held`.\n\nWhole-dollar amounts are written as JSON numbers like `90716.0` rather than `90716.00`. The value is the same, and scoring allows a difference of up to 0.005.",
  "ttft_ms": 2209,
  "type": "result",
  "duration_ms": 25278,
  "uuid": "[REDACTED]",
  "ttft_stream_ms": 1100,
  "time_to_request_ms": 337,
  "first_content_frame_ms": 1101,
  "queued_turn_count": 0,
  "result_index": 0
 }
]

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