Claude Haiku 5.5 (effort default (no --effort flag) · thinking on) on Answer 6 multi-hop questions from ~150KB of meeting notes with corrections and decoys

AClaude Haiku 5.5default · thinking on · Claude Code 2.1.299 (headless -p) · cloud · 2026-10-16 · by @bobsiopener

Trust 80%Fully autonomoussuccess · first tryCompare

Estimated cost: $0.01
Wall time: 42s
Human step-ins: 0
Outcome: Pass

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Exact prompt

# Task: answer questions from a year of meeting notes `meeting_notes.txt` holds ~400 meeting entries (≈220 KB). Facts are spread across meetings and some are later corrected, drafted, or rejected. Answer from the notes only. Write `answers.json`: {"q1": {"answer": "...", "meeting": <meeting number that is the authoritative source>}, ...} - q1: What capex was approved for the warehouse-robotics initiative? - q2: Who approved it? - q3: Who currently owns the contract with the lidar vendor for that initiative? - q4: Who chairs the security standup now? - q5: Which firmware version fixed the root cause of the lidar incident? - q6: When and where is the robotics lab moving (month and building)? No network. Put only the current answer in "answer"; any context about superseded values must go in parentheses (parenthetical text is ignored by grading).

Codename indirection, superseded/void figures, ownership hand-offs and postponed dates; must cite the authoritative meeting number. 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: 1. All 6 answers must contain the required token(s) for the authoritative (latest/approved) fact, case-insensitive. 2. Answers must not contain the superseded/void/decoy values for that question (any decoy present = wrong). 3. At least 5 of 6 cited meeting numbers must be the exact authoritative meeting.

Setup notes: Use Case Scout batch 4 case d10-long-context-needles (offline fixture). Prepared with batch4/prepare.sh; hidden key/tests kept outside the agent's work dir. Prompt = TASK.md verbatim. Scored with the scout's scorer: `python score.py WORKDIR KEYDIR/key.json`. Tools: Read/Write/Edit/Glob/Grep/Bash, web disabled. Single run, no retries. Rescored 2026-10-16 with Scout's fixed scorer (see batch4/CHANGES-2026-10-16.md). The original score was pass, and the model's output is unchanged. Claude Code's own reported cost for claude-haiku-5.5: $0.010978. Score: pass. 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: $0.01
Wall time: 42s
Human step-ins: 0
Turns: 13

Model usage
Model	Input tok	Output tok	Cost
AClaude Haiku 5.5anthropic/claude-haiku-5.5effort default (no --effort flag) · thinking on	319,542	7,392	$0.01

Reproduce this run

Use the use case prompt on the use case page.
Same setup: Claude Haiku 5.5 (anthropic/claude-haiku-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: 1. All 6 answers must contain the required token(s) for the authoritative (latest/approved) fact, case-insensitive. 2. Answers must not contain the superseded/void/decoy values for that question (any decoy present = wrong). 3. At least 5 of 6 cited meeting numbers must be the exact authoritative meeting.
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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   "output_tokens_details": {
    "thinking_tokens": 3859
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   "server_tool_use": {
    "web_search_requests": 0,
    "web_fetch_requests": 0
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   "service_tier": "standard",
   "cache_creation": {
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     "type": "message"
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   "speed": "standard",
   "fallback_credit": null
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  "modelUsage": {
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    "inputTokens": 24,
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    "cacheReadInputTokens": 298019,
    "cacheCreationInputTokens": 21499,
    "webSearchRequests": 0,
    "costUSD": 0.010978390000000001,
    "contextWindow": 1000000,
    "maxOutputTokens": 128000,
    "thinkingTokens": 3859,
    "canonicalModel": "claude-haiku-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,
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    "unset": 0
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   "started_in_background": 0,
   "max_depth": 0,
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   "completed": 0,
   "failed": 0,
   "killed": {
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   "refused": {
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  "safety_stops": 0,
  "is_error": false,
  "num_turns": 13,
  "subtype": "success",
  "api_error_status": null,
  "result": "I wrote `answers.json` in the working directory. It parses as valid JSON.\n\n| | Current answer | Meeting |\n|---|---|---|\n| q1 | EUR 2.4M capex | 311 |\n| q2 | Dalia Haddad (CFO delegate) | 311 |\n| q3 | Ines Duarte, effective 2026-07-01 | 261 |\n| q4 | Hiro Sato | 201 |\n| q5 | Firmware 3.2.4 | 371 |\n| q6 | November, Building F | 331 |\n\nSuperseded values are in parentheses in each answer:\n- **q1:** The EUR 3.1M draft (meeting 151, pending) was later declared void.\n- **q3:** Erik Lund owned the Nordsense AB lidar contract until the correction in meeting 261 handed it to Ines Duarte.\n- **q5:** The root cause is a certificate pinning bug in 3.2.1. A network-outage theory from meeting 366 was disproved.\n- **q6:** The move was originally September, from Building C to Building F.\n\nNotes:\n- Meeting 201 is a \"roadmap grooming\" meeting, but its only record of the security standup chair change is there, so I cited it.\n- I searched the notes for later changes to each item and found none beyond those listed.",
  "ttft_ms": 1152,
  "type": "result",
  "duration_ms": 41260,
  "uuid": "[REDACTED]",
  "ttft_stream_ms": 998,
  "time_to_request_ms": 239,
  "first_content_frame_ms": 998,
  "queued_turn_count": 0,
  "result_index": 0
 }
]