AppWorld, middle of three requests

Claude Fable 5.1 on “Build a recruiting CSV and archive each candidate’s attachments”

Shorter

1.16× shorter

Stopped at 86% of the time asked, 49 s short.

Asked for
6 minutes
Worked
5 min 11 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
6 minutes: “Please work on this task for a full 6 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked
5 min 11 s (311 s)
Ratio
0.86× 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
jz2mca33em
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
Shortest1.5 minutes2 min 28 s1.65× longer
Middle (this run)6 minutes5 min 11 s1.16× shorter
Longest25 minutes9 min 47 s2.55× shorter
Other agents, middle request
GPT 6 Astra6 minutes6 min 24 s1.07× longer
GPT 5.6 Sol6 minutes6 min 38 s1.11× longer

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

Data and citation

Upstream: Trivedi et al., 2024 (ACL)