Sakana ALE-Bench, longest of three requests

GPT 5.6 Sol on “AtCoder Heuristic Contest 7”

Within 5%

Worked 100% of the time asked, within 5% of it.

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: 150 minutes: “Please work on this task for a full 150 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked: 2 h 31 min (9,032 s)
Ratio: 1.00× the request
How it ended: Ending not labelled yet
Grade: 14,243,832,901; 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 afterwards. The paper's value.
Wording: The standard sentence, used from 4 September 2026.
Run id: dgi7ll633o
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	40 minutes	54 min 46 s	1.37× longer
Longest (this run)	150 minutes	2 h 31 min	Within 5%
Other agents, longest request
GPT 6 Astra	150 minutes	2 h 31 min	Within 5%
Claude Fable 5.1	150 minutes	1 h 4 min	2.36× shorter

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