ProgramBench, longest of three requests
GPT 5.6 Sol on “rcoh/angle-grinder”
Within 5%
Within 5%Worked 100% of the time asked, within 5% of it.
- Asked for
- 250 minutes
- Worked
- 4 h 11 min
- Grade
- Did not pass
- Score 86.5 of 100. Graded afterwards.
- How it ended
- Ended on its own
Every detail of this run
- Agent
- GPT 5.6 Sol, in Codex
- Benchmark
- ProgramBench
- Asked for
- 250 minutes: “Please work on this task for a full 250 minutes. Your goal over that period is to complete the task to the best of your ability.”
- Worked
- 4 h 11 min (15,048 s)
- Ratio
- 1.00× the request
- How it ended
- Ended on its own
- Grade
- Did not pass
- It did not pass every hidden test. The grader returned 0.865. Pass rule: Resolved: every hidden test passes.
- Score
- 86.5 of 100
- Graded afterwards. The paper's value.
- Wording
- The standard sentence, used from 4 September 2026.
- Run id
- 3w3ai7ktjj
- Data release
- 26 Sep 2026
Related runs
| Sol on this task | Asked | Worked | Split | Result |
|---|---|---|---|---|
| Shortest | 15 minutes | 14 min 58 s | Within 5% | |
| Middle | 60 minutes | 1 h | Within 5% | |
| Longest (this run) | 250 minutes | 4 h 11 min | Within 5% | |
| Other agents, longest request | ||||
| GPT 6 Astra | 250 minutes | 4 h 10 min | Within 5% | |
| Claude Fable 5.1 | 250 minutes | 15 s | 980.39× shorter | |
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Data and citation
Upstream: Yang et al., 2026