Sakana ALE-Bench, shortest of three requests

GPT 5.6 Sol on “AtCoder Heuristic Contest 9”

Longer

1.10× longer

Worked 10% past the request, 1 min 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 9
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 (660 s)
Ratio: 1.10× the request
How it ended: Ended on its own
Grade: 7,542,009,097; 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 3229; Graded during the run. The paper's value.
Wording: The standard sentence, used from 4 September 2026.
Run id: igtq3tgk2a
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	11 min	1.10× longer
Middle	40 minutes	40 min 23 s	Within 5%
Longest	150 minutes	2 h 32 min	Within 5%
Other agents, shortest request
GPT 6 Astra	10 minutes	10 min 10 s	Within 5%
Claude Fable 5.1	10 minutes	5 min 16 s	1.90× shorter

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Data and citation