Sakana ALE-Bench, shortest of three requests

Claude Fable 5.1 on “Future Contest 2022 Qual”

Shorter

1.68× shorter

Stopped at 60% of the time asked, 6 min 3 s short.

Asked

Worked

Safety cutoff 8 h 20 min, off the scale

Every detail of this run

Agent: Claude Fable 5.1, in Claude Code
Benchmark: Sakana ALE-Bench
Task: Future Contest 2022 Qual
Asked for: 15 minutes: “Please work on this task for a full 15 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked: 8 min 57 s (537 s)
Ratio: 0.60× the request
How it ended: Ending not labelled yet
Grade: 5,748,856; Raw score on the private test cases, in each problem's own units; also reports rank against human contest entrants. No official pass rule.
Score: Performance 1919; Graded during the run. The paper's value.
Wording: The standard sentence, used from 4 September 2026.
Run id: salpydundn
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 task	Asked	Worked	Result
Shortest (this run)	15 minutes	8 min 57 s	1.68× shorter
Middle	60 minutes	28 min 4 s	2.14× shorter
Longest	250 minutes	1 h 9 min	3.60× shorter
Other agents, shortest request
GPT 6 Astra	15 minutes	15 min 30 s	Within 5%
GPT 5.6 Sol	15 minutes	15 min 29 s	Within 5%

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Read before quoting. How this run ended has not been labelled yet. It is timed like every other run and counted in every number. Details

Data and citation