PPTArena, middle of three requests

Claude Fable 5.1 on “Animal Research poster”

Longer

1.60× longer

Worked 60% past the request, 3 min 35 s over.

Asked for
6 minutes
Worked
9 min 35 s
Grade
Score 40 of 100
Instructions 2 of 5, visuals 2 of 5. Judged afterwards.
How it ended
Ended on its own
Every detail of this run
Agent
Claude Fable 5.1, in Claude Code
Benchmark
PPTArena
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
9 min 35 s (575 s)
Ratio
1.60× the request
How it ended
Ended on its own
Grade
Instructions 2.00 of 5, visuals 2.00 of 5
Two 0-to-5 judge scores, instruction following (IF) and visual quality (VQ), each the median of 3 judge samples. No official pass rule.
Score
40 of 100
Judged afterwards. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
mc56bpwdzq
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 minutes8 min 17 s5.53× longer
Middle (this run)6 minutes9 min 35 s1.60× longer
Longest25 minutes23 min 7 s1.08× shorter
Other agents, middle request
GPT 6 Astra6 minutes6 min 15 sWithin 5%
GPT 5.6 Sol6 minutes7 min 34 s1.26× longer

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Data and citation