Terminal-Bench 4.0, shortest of three requests
Claude Fable 5.1 on “Build and apply a five-day ERP/MES/WMS production plan”
Longer
5.23× longerWorked 423% past the request, 21 min 10 s over.
- Asked for
- 5 minutes
- Worked
- 26 min 10 s
- 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
- Claude Fable 5.1, in Claude Code
- Benchmark
- Terminal-Bench 4.0
- Asked for
- 5 minutes: “Please work on this task for a full 5 minutes. Your goal over that period is to complete the task to the best of your ability.”
- Worked
- 26 min 10 s (1,570 s)
- Ratio
- 5.23× 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
- ty7gjb46b7
- Data release
- 26 Sep 2026
Related runs
| Fable on this task | Asked | Worked | Split | Result |
|---|---|---|---|---|
| Shortest (this run) | 5 minutes | 26 min 10 s | 5.23× longer | |
| Middle | 20 minutes | 38 min 9 s | 1.91× longer | |
| Longest | 80 minutes | 32 min 19 s | 2.48× shorter | |
| Other agents, shortest request | ||||
| GPT 6 Astra | 5 minutes | 5 min 35 s | 1.12× longer | |
| GPT 5.6 Sol | 5 minutes | 5 min 58 s | 1.19× longer | |
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Data and citation
Upstream: Merrill et al., 2026 (ICLR)