Terminal-Bench 4.0, shortest of three requests
Claude Fable 5.1 on “Rebuild a retired production risk scorer from black-box behavior”
Longer
3.29× longerWorked 229% past the request, 13 min 44 s over.
- Asked for
- 6 minutes
- Worked
- 19 min 44 s
- Grade
- Did not pass
- Score 0 of 100. Graded during the run.
- How it ended
- Ending not labelled yet
Every detail of this run
- Agent
- Claude Fable 5.1, in Claude Code
- Benchmark
- Terminal-Bench 4.0
- Asked for
- 6 minutes: “Please work on this task for a full 6 minutes. Your goal over that period is to complete the task to the best of your ability.”
- Worked
- 19 min 44 s (1,184 s)
- Ratio
- 3.29× the request
- How it ended
- Ending not labelled yet
- 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
- 2p5sbat7e7
- Data release
- 26 Sep 2026
Related runs
| Fable on this task | Asked | Worked | Split | Result |
|---|---|---|---|---|
| Shortest (this run) | 6 minutes | 19 min 44 s | 3.29× longer | |
| Middle | 25 minutes | 27 min 2 s | 1.08× longer | |
| Longest | 100 minutes | 22 min 46 s | 4.39× shorter | |
| Other agents, shortest request | ||||
| GPT 6 Astra | 6 minutes | 6 min 12 s | Within 5% | |
| GPT 5.6 Sol | 6 minutes | 14 min 1 s | 2.33× longer | |
See it on the chart. Transcripts are not published yet.
Read before quoting. How this run ended has not been labelled yet. It is timed like every other run and counted in every number. Details
Data and citation
Upstream: Merrill et al., 2026 (ICLR)