GPT-6.1 Sol (effort default (no reasoning-effort override) · thinking on) on Find substantive changes hidden in a 'minor clean-up' contract redline

OGPT-6.1 Soldefault · thinking on · Codex CLI 0.163.0 (codex exec --json) · cloud · 2026-10-22 · by @bobsiopener

Trust 80%Fully autonomoussuccess · first tryCompare

Estimated cost: $0.04
Wall time: 52s
Human step-ins: 0
Outcome: Pass

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Exact prompt

# Task: review a contract redline for the customer You represent the CUSTOMER. `msa_v1.txt` is the agreed draft; `msa_v2.txt` is the provider's new version, described by them as "minor clean-up only". Compare them. Write `changes.json`: a list of objects for every SUBSTANTIVE change (one that changes rights, obligations, amounts, durations, scope, or removes a clause). Ignore purely cosmetic edits (whitespace, capitalisation, punctuation, rephrasing with identical meaning). Each object: {"clause": "<number e.g. 2.2>", "kind": one of ["notice_period","payment_terms","cap_or_limit","duration","scope_narrowed","scope_broadened","ownership","new_obligation","governing_law","clause_removed","other"], "customer_impact": "worse"|"better"|"neutral", "summary": "<one sentence>"} Also write `memo.md` (≤250 words) telling the customer which 3 changes matter most and why. No network.

10 substantive vs 8 cosmetic edits; some substantive ones are subtle (cap 50%→15%, 'gross negligence' dropped, ownership of outputs split, a whole clause deleted). Over-flagging cosmetic edits fails. Original benchmark task written for usecaserank.com. Headless, offline run on a reproducible fixture. Cost shown is a list-price API-equivalent estimate (run on a ChatGPT subscription, not billed).

Success criteria: 1. changes.json must flag at least 9 of the 10 substantive changes (matched by clause number). 2. The 'kind' value must be correct for at least 8 of the substantive changes. 3. At most 1 clause that only has cosmetic edits may be flagged. 4. customer_impact must be 'worse' for at least 9 of the substantive changes. 5. memo.md must exist and be <= 250 words.

Setup notes: Use Case Scout batch3 case c06-contract-redline (offline fixture). Prepared with batch3/prepare.sh on the shared box; only TASK.md + starting files were copied to the agent machine, hidden key/tests stayed on the box. Prompt = TASK.md verbatim on stdin. Flags: --json -s workspace-write --skip-git-repo-check --ephemeral --ignore-user-config --ignore-rules -C <workdir>. Scored on the box with the scout's scorer: `python score.py WORKDIR KEYDIR/key.json`. Single run, no retries. User-level AGENTS.md (846 bytes, sha256 83ec4fe50da8) may have been in context; --ignore-user-config does not document excluding it. Serving model not confirmed: requested via -m; the event log does not echo the serving model id. Price source is secondary (pricing.json verification='secondary', https://www.actuia.com/en/news/ai-api-pricing-in-october-2026-050-to-50-for-output/), not an official OpenAI price page. Score: pass. Cost is an ESTIMATE: measured tokens x pricing.json list price (ChatGPT plan, nothing billed); input_tokens include cached reads; output_tokens include reasoning tokens. Tool calls 3 (1 failed, recovered). Single run.

Estimated cost List-price estimate; not actually billed.

Metrics

Estimated cost: $0.04
Wall time: 52s
Human step-ins: 0
Turns: 1

Model usage
Model	Input tok	Output tok	Cost
OGPT-6.1 Solopenai/gpt-6.1-soleffort default (no reasoning-effort override) · thinking on	66,947	1,602	$0.04

Reproduce this run

Use the use case prompt on the use case page.
Same setup: GPT-6.1 Sol (openai/gpt-6.1-sol, effort default (no reasoning-effort override) · thinking on) via Codex CLI 0.163.0 (codex exec --json), cloud.
It counts as a success only if it meets every success criterion: 1. changes.json must flag at least 9 of the 10 substantive changes (matched by clause number). 2. The 'kind' value must be correct for at least 8 of the substantive changes. 3. At most 1 clause that only has cosmetic edits may be flagged. 4. customer_impact must be 'worse' for at least 9 of the substantive changes. 5. memo.md must exist and be <= 250 words.
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

{"type": "thread.started", "thread_id": "01a1641a-e789-7dc2-8b64-fd69a5042b8d"}
{"type": "turn.started"}
{"type": "item.completed", "item": {"id": "item_0", "type": "agent_message", "text": "I\u2019ll compare the drafts for substantive changes, then write `changes.json` and a short memo prioritizing the three biggest customer risks."}}
{"type": "item.started", "item": {"id": "item_1", "type": "command_execution", "command": "/bin/bash -lc 'ls -la; cat msa_v1.txt; cat msa_v2.txt'", "aggregated_output": "", "exit_code": null, "status": "in_progress"}}
{"type": "item.completed", "item": {"id": "item_1", "type": "command_execution", "command": "/bin/bash -lc 'ls -la; cat msa_v1.txt; cat msa_v2.txt'", "aggregated_output": "total 20\ndrwxr-xr-x 6 bob bob 4096 Oct 22 10:54 .\ndrwxrwxr-x 3 bob bob 4096 Oct 22 10:54 ..\ndr-xr-xr-x 2 bob bob   40 Oct 22 10:54 .agents\ndr-xr-xr-x 2 bob bob   40 Oct 22 10:54 .aws\ndr-xr-xr-x 2 bob bob   40 Oct 22 10:54 .codex\ndr-xr-xr-x 2 bob bob   40 Oct 22 10:54 .git\n-rw-r--r-- 1 bob bob  887 Oct 22 10:08 TASK.md\n-rw-r--r-- 1 bob bob 2303 Oct 22 10:08 msa_v1.txt\n-rw-r--r-- 1 bob bob 2367 Oct 22 10:08 msa_v2.txt\nMASTER SERVICES AGREEMENT (Version 1, Provider draft)\n\n1.1 Term. This Agreement starts on the Effective Date and continues for twenty-four (24) months.\n\n1.2 Renewal. The Agreement renews automatically for successive twelve (12) month periods unless either party gives ninety (90) days' written notice.\n\n2.1 Fees. Customer shall pay the fees in Schedule A. Fees are fixed for the initial term.\n\n2.2 Payment terms. Invoices are payable within forty-five (45) days of receipt.\n\n2.3 Late payment. Overdue amounts accrue interest at 1% per month.\n\n3.1 Service levels. Provider shall make the Service available 99.9% of each calendar month.\n\n3.2 Service credits. If availability falls below the target, Customer receives a credit of 10% of monthly fees, capped at 50%.\n\n4.1 Confidentiality. Each party shall keep the other party's Confidential Information secret for five (5) years after termination.\n\n4.2 Exceptions. Confidential Information excludes information that is public, independently developed, or lawfully received from a third party.\n\n5.1 Liability cap. Each party's total liability is limited to the fees paid in the twelve (12) months preceding the claim.\n\n5.2 Exclusions. The cap does not apply to breach of confidentiality, gross negligence, or wilful misconduct.\n\n6.1 Data location. Customer Data is stored only in data centres located in the European Union.\n\n6.2 Subprocessors. Provider shall give thirty (30) days' notice before adding a subprocessor, and Customer may object.\n\n7.1 IP ownership. Customer owns all Customer Data and all outputs generated from it.\n\n7.2 Feedback. Provider may use Customer feedback to improve the Service.\n\n8.1 Termination for convenience. Customer may terminate for convenience on sixty (60) days' notice.\n\n8.2 Termination for cause. Either party may terminate if the other materially breaches and fails to cure within thirty (30) days.\n\n9.1 Governing law. This Agreement is governed by the laws of Ireland.\n\n9.2 Venue. The courts of Dublin have exclusive jurisdiction.\n\n10.1 Assignment. Neither party may assign this Agreement without the other's prior written consent.\n\n10.2 Notices. Notices must be in writing and sent by email with confirmation of receipt.\n\n10.3 Audit. Customer may audit Provider's compliance once per year on thirty (30) days' notice.\nMASTER SERVICES AGREEMENT (Version 2, Provider redline - 'minor clean-up only')\n\n1.1 Term. This Agreement starts on the Effective Date and continues for twenty-four  (24) months.\n\n1.2 Renewal. The Agreement renews automatically for successive twelve (12) month periods unless either party gives one hundred and twenty (120) days' written notice.\n\n2.1 Fees. Customer shall pay the Fees in Schedule A. Fees are fixed for the initial term.\n\n2.2 Payment terms. Invoices are payable within thirty (30) days of the invoice date.\n\n2.3 Late payment. Overdue amounts accrue interest at 1 % per month.\n\n3.1 Service levels. Provider shall make the Service available 99.9% of each calendar month.\n\n3.2 Service credits. If availability falls below the target, Customer receives a credit of 10% of monthly fees, capped at 15%.\n\n4.1 Confidentiality. Each party shall keep the other party's Confidential Information secret for two (2) years after termination.\n\n4.2 Exceptions. Confidential Information excludes information that is public, independently developed or lawfully received from a third party.\n\n5.1 Liability cap. Each party's total liability is limited to the fees paid in the twelve (12) months that precede the claim.\n\n5.2 Exclusions. The cap does not apply to breach of confidentiality or wilful misconduct.\n\n6.1 Data location. Customer Data is stored in data centres located in the European Union or the United States.\n\n6.2 Subprocessors. Provider shall give thirty (30) days' notice before adding a subprocessor, and Customer may object.\n\n7.1 IP ownership. Customer owns all Customer Data. Provider owns all outputs generated by the Service.\n\n7.2 Feedback. Provider may use Customer feedback to improve the Service.  \n\n8.1 Termination for convenience. Customer may terminate for convenience on sixty (60) days' notice, subject to an early termination fee equal to three (3) months of fees.\n\n8.2 Termination for cause. Either party may terminate if the other materially breaches and fails to cure within thirty (30) days.\n\n9.1 Governing law. This Agreement is governed by the laws of the State of New York.\n\n9.2 Venue. The courts of Dublin shall have exclusive jurisdiction.\n\n10.1 Assignment. Neither party may assign this Agreement without the other's prior written consent.\n\n10.2 Notices. Notices must be in writing, and sent by e-mail with confirmation of receipt.\n", "exit_code": 0, "status": "completed"}}
{"type": "item.started", "item": {"id": "item_2", "type": "file_change", "changes": [{"path": "/home/bob/usecase-runs/batch/out/gpt-6.1-sol/142_c06/work/changes.json", "kind": "add"}, {"path": "/home/bob/usecase-runs/batch/out/gpt-6.1-sol/142_c06/work/memo.md", "kind": "add"}], "status": "in_progress"}}
{"type": "item.completed", "item": {"id": "item_2", "type": "file_change", "changes": [{"path": "/home/bob/usecase-runs/batch/out/gpt-6.1-sol/142_c06/work/changes.json", "kind": "add"}, {"path": "/home/bob/usecase-runs/batch/out/gpt-6.1-sol/142_c06/work/memo.md", "kind": "add"}], "status": "completed"}}
{"type": "item.started", "item": {"id": "item_3", "type": "command_execution", "command": "/bin/bash -lc \"python -c 'import json,pathlib; p=pathlib.Path(\\\"changes.json\\\"); d=json.loads(p.read_text()); assert len(d)==10; assert all(set(x)=={\\\"clause\\\",\\\"kind\\\",\\\"customer_impact\\\",\\\"summary\\\"} for x in d); n=len(pathlib.Path(\\\"memo.md\\\").read_text().split()); assert n<=250; print(f\\\"Validated {len(d)} changes; memo: {n} words.\\\")'\"", "aggregated_output": "", "exit_code": null, "status": "in_progress"}}
{"type": "item.completed", "item": {"id": "item_3", "type": "command_execution", "command": "/bin/bash -lc \"python -c 'import json,pathlib; p=pathlib.Path(\\\"changes.json\\\"); d=json.loads(p.read_text()); assert len(d)==10; assert all(set(x)=={\\\"clause\\\",\\\"kind\\\",\\\"customer_impact\\\",\\\"summary\\\"} for x in d); n=len(pathlib.Path(\\\"memo.md\\\").read_text().split()); assert n<=250; print(f\\\"Validated {len(d)} changes; memo: {n} words.\\\")'\"", "aggregated_output": "/bin/bash: line 1: python: command not found\n", "exit_code": 127, "status": "failed"}}
{"type": "item.started", "item": {"id": "item_4", "type": "command_execution", "command": "/bin/bash -lc \"python3 -c 'import json,pathlib; d=json.loads(pathlib.Path(\\\"changes.json\\\").read_text()); assert len(d)==10; assert all(set(x)=={\\\"clause\\\",\\\"kind\\\",\\\"customer_impact\\\",\\\"summary\\\"} for x in d); n=len(pathlib.Path(\\\"memo.md\\\").read_text().split()); assert n<=250; print(f\\\"Validated {len(d)} changes; memo: {n} words.\\\")'\"", "aggregated_output": "", "exit_code": null, "status": "in_progress"}}
{"type": "item.completed", "item": {"id": "item_4", "type": "command_execution", "command": "/bin/bash -lc \"python3 -c 'import json,pathlib; d=json.loads(pathlib.Path(\\\"changes.json\\\").read_text()); assert len(d)==10; assert all(set(x)=={\\\"clause\\\",\\\"kind\\\",\\\"customer_impact\\\",\\\"summary\\\"} for x in d); n=len(pathlib.Path(\\\"memo.md\\\").read_text().split()); assert n<=250; print(f\\\"Validated {len(d)} changes; memo: {n} words.\\\")'\"", "aggregated_output": "Validated 10 changes; memo: 201 words.\n", "exit_code": 0, "status": "completed"}}
{"type": "item.completed", "item": {"id": "item_5", "type": "agent_message", "text": "Created and validated:\n\n- [changes.json](changes.json): all 10 substantive changes.\n- [memo.md](memo.md): 201 words, prioritizing output ownership, gross-negligence liability, and deletion of audit rights.\n\nThe provider\u2019s revisions go well beyond minor clean-up."}}
{"type": "turn.completed", "usage": {"input_tokens": 66947, "cached_input_tokens": 56960, "cache_write_input_tokens": 0, "output_tokens": 1602, "reasoning_output_tokens": 75}}