AppWorld, longest of three requests

Claude Fable 5.1 on “Reconcile a camping checklist with commitments and buy the remaining supplies”

Shorter

5.95× shorter

Stopped at 17% of the time asked, 24 min 58 s short.

Asked for
30 minutes
Worked
5 min 3 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
5 min 3 s (303 s)
Ratio
0.17× 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
cxk5ente4k
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 53 s1.94× longer
Middle8 minutes3 min 14 s2.47× shorter
Longest (this run)30 minutes5 min 3 s5.95× shorter
Other agents, longest request
GPT 6 Astra30 minutes31 min 16 sWithin 5%
GPT 5.6 Sol30 minutes30 min 50 sWithin 5%

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Data and citation

Upstream: Trivedi et al., 2024 (ACL)