AppWorld, shortest of three requests

Claude Fable 5.1 on “Rebuild and send a drafted recommendation email from the user’s Spotify history”

Longer

1.30× longer

Worked 30% past the request, 37 s over.

Asked for
2 minutes
Worked
2 min 37 s
Grade
Did not pass
Score 0 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
AppWorld
Asked for
2 minutes: “Please work on this task for a full 2 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked
2 min 37 s (157 s)
Ratio
1.30× the request
How it ended
Ended on its own
Grade
Did not pass
It did not pass every final-state test. The grader returned 0. Pass rule: Every final-state test passes.
Score
0 of 100
Graded during the run. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
y3hd7fcsc6
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)2 minutes2 min 37 s1.30× longer
Middle8 minutes4 min 27 s1.80× shorter
Longest30 minutes4 min 26 s6.77× shorter
Other agents, shortest request
GPT 6 Astra2 minutes2 min 24 s1.20× longer
GPT 5.6 Sol2 minutes2 min 29 s1.24× longer

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

Data and citation

Upstream: Trivedi et al., 2024 (ACL)