Sakana ALE-Bench, shortest of three requests

GPT 6 Astra on “AtCoder Heuristic Contest 31”

Longer

1.11× longer

Worked 11% past the request, 1 min 7 s over.

Asked

Worked

Safety cutoff 5 h, off the scale

Every detail of this run

Agent: GPT 6 Astra, in Codex
Benchmark: Sakana ALE-Bench
Task: AtCoder Heuristic Contest 31
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: 11 min 7 s (667 s)
Ratio: 1.11× the request
How it ended: Ended on its own
Grade: 144,892,208; 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 2370; Graded during the run. The paper's value.
Wording: The standard sentence, used from 4 September 2026.
Run id: l4ax7ldpfp
Data release: 26 Sep 2026

The other requests for GPT 6 Astra on this task, and the other agents at this request
Astra on this task	Asked	Worked	Result
Shortest (this run)	10 minutes	11 min 7 s	1.11× longer
Middle	40 minutes	40 min 34 s	Within 5%
Longest	150 minutes	2 h 30 min	Within 5%
Other agents, shortest request
GPT 5.6 Sol	10 minutes	10 min 54 s	1.09× longer
Claude Fable 5.1	10 minutes	6 min 40 s	1.50× shorter

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Data and citation