Terminal-Bench 4.0, shortest of three requests
Claude Fable 5.1 on “Train a lake-temperature profile model from sparse observations”
Shorter
1.84× shorterStopped at 54% of the time asked, 13 min 42 s short.
- Asked for
- 30 minutes
- Worked
- 16 min 18 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
- 30 minutes: “Please work on this task for a full 30 minutes. Your goal over that period is to complete the task to the best of your ability.”
- Worked
- 16 min 18 s (978 s)
- Ratio
- 0.54× 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
- kt2xirhif5
- Data release
- 26 Sep 2026
Related runs
| Fable on this task | Asked | Worked | Split | Result |
|---|---|---|---|---|
| Shortest (this run) | 30 minutes | 16 min 18 s | 1.84× shorter | |
| Middle | 125 minutes | 1 h 21 min | 1.54× shorter | |
| Longest | 500 minutes | 4 h 4 min | 2.05× shorter | |
| Other agents, shortest request | ||||
| GPT 6 Astra | 30 minutes | 30 min 32 s | Within 5% | |
| GPT 5.6 Sol | 30 minutes | 31 min 22 s | Within 5% | |
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Data and citation
Upstream: Merrill et al., 2026 (ICLR)