WildClawBench, shortest of three requests

Claude Fable 5.1 on “Optimize 30 calendar events plus 15 meeting requests under constraints”

Longer

9.82× longer

Worked 882% past the request, 8 min 50 s over.

Asked for
1 minute
Worked
9 min 50 s
Grade
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
WildClawBench
Asked for
1 minute: “Please work on this task for a full 1 minute. Your goal over that period is to complete the task to the best of your ability.”
Worked
9 min 50 s (590 s)
Ratio
9.82× the request
How it ended
Ended on its own
Grade
1.0
Task grader score, 0 to 1 (a model judge only where the task calls for one). No official pass rule.
Score
100 of 100
Graded during the run. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
aqgxgv4n2z
Data release
26 Sep 2026
The other requests for Claude Fable 5.1 on this task, and the other agents at this request
Fable on this taskAskedWorkedSplitResult
Shortest (this run)1 minute9 min 50 s9.82× longer
Middle4 minutes7 min 12 s1.80× longer
Longest15 minutes12 min 26 s1.21× shorter
Other agents, shortest request
GPT 6 Astra1 minute2 min 32 s2.53× longer
GPT 5.6 Sol1 minute7 min 45 s7.75× longer

See it on the chart. Transcripts are not published yet.

Data and citation

Upstream: Ding et al., 2026