WildClawBench, middle of three requests
Claude Fable 5.1 on “Negotiate a 90-minute meeting across email, calendar, time zones, and a decoy”
Longer
2.54× longerWorked 154% past the request, 6 min 9 s over.
- Asked for
- 4 minutes
- Worked
- 10 min 9 s
- Grade
- Score 89.5 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
- WildClawBench
- Asked for
- 4 minutes: “Please work on this task for a full 4 minutes. Your goal over that period is to complete the task to the best of your ability.”
- Worked
- 10 min 9 s (609 s)
- Ratio
- 2.54× the request
- How it ended
- Ended on its own
- Grade
- 0.895
- Task grader score, 0 to 1 (a model judge only where the task calls for one). No official pass rule.
- Score
- 89.5 of 100
- Graded during the run. The paper's value.
- Wording
- The standard sentence, used from 4 September 2026.
- Run id
- rcsmgb6ys7
- Data release
- 26 Sep 2026
Related runs
| Fable on this task | Asked | Worked | Split | Result |
|---|---|---|---|---|
| Shortest | 1 minute | 8 min 45 s | 8.75× longer | |
| Middle (this run) | 4 minutes | 10 min 9 s | 2.54× longer | |
| Longest | 20 minutes | 7 min 43 s | 2.59× shorter | |
| Other agents, middle request | ||||
| GPT 6 Astra | 4 minutes | 4 min 23 s | 1.10× longer | |
| GPT 5.6 Sol | 4 minutes | 5 min 20 s | 1.33× longer | |
See it on the chart. Transcripts are not published yet.
Data and citation
Upstream: Ding et al., 2026