AppWorld, longest of three requests

Claude Fable 5.1 on “Reconcile an emailed road-trip song list with a Spotify playlist and download it”

Shorter

7.02× shorter

Stopped at 14% of the time asked, 25 min 44 s short.

Asked for
30 minutes
Worked
4 min 16 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
30 minutes: “Please work on this task for a full 30 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked
4 min 16 s (256 s)
Ratio
0.14× 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
qqhn7du6v3
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 minutes3 min 50 s1.92× longer
Middle8 minutes4 min 2 s1.98× shorter
Longest (this run)30 minutes4 min 16 s7.02× shorter
Other agents, longest request
GPT 6 Astra30 minutes30 min 46 sWithin 5%
GPT 5.6 Sol30 minutes31 min 35 s1.05× longer

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

Data and citation

Upstream: Trivedi et al., 2024 (ACL)