Terminal-Bench 4.0, longest of three requests
GPT 5.6 Sol on “Build and apply a five-day ERP/MES/WMS production plan”
Within 5%
Within 5%Worked 101% of the time asked, within 5% of it.
- Asked for
- 80 minutes
- Worked
- 1 h 21 min
- Grade
- Did not pass
- Score 0 of 100. Graded during the run.
- How it ended
- Ended on its own
Every detail of this run
- Agent
- GPT 5.6 Sol, in Codex
- Benchmark
- Terminal-Bench 4.0
- Asked for
- 80 minutes: “Please work on this task for a full 80 minutes. Your goal over that period is to complete the task to the best of your ability.”
- Worked
- 1 h 21 min (4,866 s)
- Ratio
- 1.01× the request
- How it ended
- Ended on its own
- Grade
- Did not pass
- It did not pass the task's tests. The grader returned 0. Pass rule: The task's tests pass.
- Score
- 0 of 100
- Graded during the run. The paper's value.
- Wording
- The standard sentence, used from 4 September 2026.
- Run id
- zfe5vxqj4g
- Data release
- 26 Sep 2026
Related runs
| Sol on this task | Asked | Worked | Split | Result |
|---|---|---|---|---|
| Shortest | 5 minutes | 5 min 58 s | 1.19× longer | |
| Middle | 20 minutes | 21 min 20 s | 1.07× longer | |
| Longest (this run) | 80 minutes | 1 h 21 min | Within 5% | |
| Other agents, longest request | ||||
| GPT 6 Astra | 80 minutes | 1 h 20 min | Within 5% | |
| Claude Fable 5.1 | 80 minutes | 32 min 19 s | 2.48× shorter | |
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Data and citation
Upstream: Merrill et al., 2026 (ICLR)