Claude Haiku 5.5 (effort default (no --effort flag) · thinking on) on Answer 8 questions from 12 conflicting dated sources with correct citations

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: $0.0050
Wall time: 16s
Human step-ins: 0
Outcome: Pass

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Rescored on 2026-10-28. Previous score: 100.0 / 100, outcome: success. See the previous run.

Exact prompt

# Task: answer questions from conflicting internal sources (as of 2026-10-15) `sources/` contains 12 dated documents about Voltaris's Kestrel Valley plant. They conflict. Prefer approved/official and newer documents; corrections override what they correct; drafts, rumors and unverified posts are not facts. Answer in `answers.json`: {"q1": {"answer": "...", "sources": ["<filename>", ...]}, ...}. Put the single most authoritative file FIRST in sources. - q1: Current planned annual capacity in GWh (number only) - q2: Current planned investment in EUR billion (number only) - q3: Current planned production start (e.g. "Q1 2028") - q4: Planned headcount at full ramp (integer) - q5: Primary cathode supplier (company name) - q6: Separator supplier (company name) - q7: Is the CEO leaving before launch, according to the best evidence? ("yes"/"no") - q8: What must be operational before production start under the water permit? (short phrase) Also write `brief.md` (≤200 words) summarising the current plan and flagging which sources were superseded or unreliable. No network.

Answer eight questions about a company's planned battery plant using twelve dated internal documents that contradict each other. Corrections override what they correct, approved minutes beat drafts, and rumors are not facts. Each answer must cite the single most authoritative file first. 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. At least 7 of 8 answers correct (normalised: the expected value must appear in the given answer, ignoring case/punctuation/commas). 2. For at least 7 of 8 questions the FIRST file in 'sources' must be the authoritative source file. 3. brief.md must exist, be 1–200 words, and must not state the rumoured/draft figures (the unapproved capacity values or the rumoured headcount) unless explicitly labelled as rumour/draft/unverified/rejected/not approved.

Setup notes: Use Case Scout batch 3 case c07-conflicting-sources (offline fixture). Prepared with the case's setup script; hidden key/tests kept outside the agent's work dir. Prompt = TASK.md verbatim. Scored automatically with the scout's scorer. Tools: Read/Write/Edit/Glob/Grep/Bash, web disabled. Single run, no retries. Rescored 2026-10-16 with Scout's fixed scorer. The original score was fail, and the model's output is unchanged. Rubric change 2026-10-17: one check was moved to an unscored flag. Claude Code's own reported cost for claude-haiku-5.5: $0.004996. Score: pass. Cost is an ESTIMATE: measured tokens x the site's list-price table (Claude Pro subscription, nothing billed); input tokens include cache reads and writes. Single run. Full scorer detail is kept in our audit records.

Estimated cost List-price estimate; not actually billed.

Metrics

Estimated cost: $0.0050
Wall time: 16s
Human step-ins: 0
Turns: 6

Model usage
Model	Input tok	Output tok	Cost
AClaude Haiku 5.5anthropic/claude-haiku-5.5effort default (no --effort flag) · thinking on	109,445	3,308	$0.0050

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. At least 7 of 8 answers correct (normalised: the expected value must appear in the given answer, ignoring case/punctuation/commas). 2. For at least 7 of 8 questions the FIRST file in 'sources' must be the authoritative source file. 3. brief.md must exist, be 1–200 words, and must not state the rumoured/draft figures (the unapproved capacity values or the rumoured headcount) unless explicitly labelled as rumour/draft/unverified/rejected/not approved.
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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Informational checks (not scored)

Reported with the run for context. They do not affect the score, the outcome or the rankings.

Brief doesn't restate superseded figures (strict check) (passed): Not stated in task.md, so it's informational only and not scored (moved out of the rubric on 2026-10-17). (none)

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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  "result": "I wrote `answers.json` (all 8 answers, parses cleanly) and `brief.md` (190 words) in the work directory.\n\n| Q | Answer | Most authoritative source (listed first) |\n|---|---|---|\n| q1 | 16 GWh | `03_board_minutes_2026-04-14.md` (approved; `12` reaffirms it) |\n| q2 | 2.1 EUR bn | `03_board_minutes_2026-04-14.md` (approved; `12` reaffirms it) |\n| q3 | Q4 2027 | `08_engineering_update_2026-07-08.md` (moved start from Q2 2027 due to permitting) |\n| q4 | 1650 | `07_hr_plan_2026-06-10.md` (approved by COO, supersedes the 1,400 in `01`) |\n| q5 | Norvik Materials | `06_correction_2026-05-22.md` (corrects `05`, which wrongly said Lumen Chem replaced Norvik) |\n| q6 | Polyfin AB | `12_board_minutes_2026-09-29.md` (approved selection) |\n| q7 | no | `10_ceo_interview_2026-08-12.md` (CEO: \"I'm here through the launch\"); `02` is an unverified rumour |\n| q8 | closed-loop cooling operational | `09_permit_notice_2026-07-30.md` (official permit condition) |\n\nJudgement calls:\n- **Production start (q3):** The April board minutes say the start date was unchanged, but they predate the July engineering update. I treated the July update as the newer evidence and listed the April minutes only as background.\n- **Q7:** I cited only the CEO interview. The forum post is listed in the answer's sources, but it is a rumour and not evidence.\n\nThe brief flags as superseded or unreliable: the press release, the forum post, the May trade-news article (retracted by the correction), the unapproved draft budget (Scenario B, rejected), and the supplier memo's \"TBD\" separator entry.",
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