Sakana ALE-Bench, middle of three requests

GPT 5.6 Sol on “AtCoder Heuristic Contest 7”

Longer

1.37× longer

Worked 37% past the request, 14 min 46 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 7
Asked for: 40 minutes: “Please work on this task for a full 40 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked: 54 min 46 s (3,286 s)
Ratio: 1.37× the request
How it ended: Ended on its own
Grade: 14,247,059,792; 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 3497; Graded during the run. The paper's value.
Wording: The standard sentence, used from 4 September 2026.
Run id: q2irqofewz
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	10 minutes	12 min 52 s	1.29× longer
Middle (this run)	40 minutes	54 min 46 s	1.37× longer
Longest	150 minutes	2 h 31 min	Within 5%
Other agents, middle request
GPT 6 Astra	40 minutes	40 min 31 s	Within 5%
Claude Fable 5.1	40 minutes	28 min 1 s	1.43× shorter

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Data and citation