Terminal-Bench 4.0, middle of three requests
Claude Fable 5.1 on “Repair a React lead form and its auditable CRM submission pipeline”
Shorter
1.16× shorterStopped at 86% of the time asked, 3 min 25 s short.
- Asked for
- 25 minutes
- Worked
- 21 min 35 s
- Grade
- Passed
- Score 100 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
- 25 minutes: “Please work on this task for a full 25 minutes. Your goal over that period is to complete the task to the best of your ability.”
- Worked
- 21 min 35 s (1,295 s)
- Ratio
- 0.86× the request
- How it ended
- Ended on its own
- Grade
- Passed
- It passed the task's tests. The grader returned 1. Pass rule: The task's tests pass.
- Score
- 100 of 100
- Graded during the run. The paper's value.
- Wording
- The standard sentence, used from 4 September 2026.
- Run id
- 2cfqe7avc5
- Data release
- 26 Sep 2026
Related runs
| Fable on this task | Asked | Worked | Split | Result |
|---|---|---|---|---|
| Shortest | 6 minutes | 17 min 22 s | 2.90× longer | |
| Middle (this run) | 25 minutes | 21 min 35 s | 1.16× shorter | |
| Longest | 100 minutes | 28 min 50 s | 3.47× shorter | |
| Other agents, middle request | ||||
| GPT 6 Astra | 25 minutes | 25 min 14 s | Within 5% | |
| GPT 5.6 Sol | 25 minutes | 21 min 54 s | 1.14× shorter | |
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Data and citation
Upstream: Merrill et al., 2026 (ICLR)