AssistantBench, shortest of three requests
Claude Fable 5.1 on “AssistantBench validation task 15”
Longer
3.52× longerWorked 252% past the request, 3 min 9 s over.
- Asked for
- 1.25 minutes
- Worked
- 4 min 24 s
- Grade
- Did not pass
- Score 10.5 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
- AssistantBench
- Asked for
- 1.25 minutes: “Please work on this task for a full 1.25 minutes. Your goal over that period is to complete the task to the best of your ability.”
- Worked
- 4 min 24 s (264 s)
- Ratio
- 3.52× the request
- How it ended
- Ended on its own
- Grade
- Did not pass
- It did not match the reference answer exactly. The grader returned 0.105. Pass rule: Exact match with the reference answer.
- Score
- 10.5 of 100
- Graded during the run. The paper's value.
- Wording
- The standard sentence, used from 4 September 2026.
- Run id
- pioyjo7ait
- Data release
- 26 Sep 2026
Related runs
| Fable on this task | Asked | Worked | Split | Result |
|---|---|---|---|---|
| Shortest (this run) | 1.25 minutes | 4 min 24 s | 3.52× longer | |
| Middle | 5 minutes | 5 min 29 s | 1.10× longer | |
| Longest | 20 minutes | 10 min 57 s | 1.83× shorter | |
| Other agents, shortest request | ||||
| GPT 6 Astra | 1.25 minutes | 1 min 49 s | 1.45× longer | |
| GPT 5.6 Sol | 1.25 minutes | 3 min 11 s | 2.55× longer | |
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Data and citation
Upstream: Yoran et al., 2024 (EMNLP)