AppWorld, longest of three requests

Claude Fable 5.1 on “Export every playlist song to a CSV and email the backup”

Shorter

12.04× shorter

Stopped at 8% of the time asked, 36 min 41 s short.

Asked for
40 minutes
Worked
3 min 19 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
AppWorld
Asked for
40 minutes: “Please work on this task for a full 40 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked
3 min 19 s (199 s)
Ratio
0.08× the request
How it ended
Ended on its own
Grade
Passed
It passed every final-state test. The grader returned 1. Pass rule: Every final-state test passes.
Score
100 of 100
Graded during the run. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
q54b25y3ob
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
Shortest2.5 minutes3 min 59 s1.59× longer
Middle10 minutes3 min 48 s2.64× shorter
Longest (this run)40 minutes3 min 19 s12.04× shorter
Other agents, longest request
GPT 6 Astra40 minutes40 min 46 sWithin 5%
GPT 5.6 Sol40 minutes40 min 40 sWithin 5%

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

Data and citation

Upstream: Trivedi et al., 2024 (ACL)