AppWorld, middle of three requests

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

Shorter

2.47× shorter

Stopped at 41% of the time asked, 4 min 46 s short.

Asked for
8 minutes
Worked
3 min 14 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
8 minutes: “Please work on this task for a full 8 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked
3 min 14 s (194 s)
Ratio
0.41× 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
glfisqtnvg
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
Middle (this run)8 minutes3 min 14 s2.47× shorter
Longest30 minutes5 min 3 s5.95× shorter
Other agents, middle request
GPT 6 Astra8 minutes8 min 42 s1.09× longer
GPT 5.6 Sol8 minutes8 min 30 s1.06× longer

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

Data and citation

Upstream: Trivedi et al., 2024 (ACL)