Sakana ALE-Bench, shortest of three requests

GPT 5.6 Sol on “AtCoder Heuristic Contest 26”

Longer

1.53× longer

Worked 53% past the request, 5 min 18 s over.

Asked

Worked

Safety cutoff 5 h, off the scale

Every detail of this run

Agent: GPT 5.6 Sol, in Codex
Benchmark: Sakana ALE-Bench
Task: AtCoder Heuristic Contest 26
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: 15 min 18 s (918 s)
Ratio: 1.53× the request
How it ended: Ended on its own
Grade: 1,416,150; 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 3001; Graded during the run. The paper's value.
Wording: The standard sentence, used from 4 September 2026.
Run id: eo2wg2mlu2
Data release: 26 Sep 2026

The other requests for GPT 5.6 Sol on this task, and the other agents at this request
Sol on this task	Asked	Worked	Result
Shortest (this run)	10 minutes	15 min 18 s	1.53× longer
Middle	40 minutes	40 min 56 s	Within 5%
Longest	150 minutes	2 h 30 min	Within 5%
Other agents, shortest request
GPT 6 Astra	10 minutes	10 min 13 s	Within 5%
Claude Fable 5.1	10 minutes	7 min 46 s	1.29× shorter

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Data and citation