AppWorld, middle of three requests

Claude Fable 5.1 on “Execute every task in a camping project across shopping, expenses, payments, invitations, and task closeout”

Shorter

1.66× shorter

Stopped at 60% of the time asked, 3 min 58 s short.

Asked for
10 minutes
Worked
6 min 2 s
Grade
Did not pass
Score 0 of 100. Graded afterwards.
How it ended
Ended on its own
Every detail of this run
Agent
Claude Fable 5.1, in Claude Code
Benchmark
AppWorld
Asked for
10 minutes: “Please work on this task for a full 10 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked
6 min 2 s (362 s)
Ratio
0.60× 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 afterwards. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
657xfgfg5j
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 minutes6 min 51 s2.74× longer
Middle (this run)10 minutes6 min 2 s1.66× shorter
Longest40 minutes7 min 31 s5.32× shorter
Other agents, middle request
GPT 6 Astra10 minutes10 min 38 s1.06× longer
GPT 5.6 Sol10 minutes10 min 42 s1.07× longer

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Data and citation

Upstream: Trivedi et al., 2024 (ACL)