Sakana ALE-Bench, longest of three requests

GPT 5.6 Sol on “AtCoder Heuristic Contest 11”

Within 5%

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

Asked

Worked

Safety cutoff 6 h 40 min, off the scale

Every detail of this run

Agent: GPT 5.6 Sol, in Codex
Benchmark: Sakana ALE-Bench
Task: AtCoder Heuristic Contest 11
Asked for: 200 minutes: “Please work on this task for a full 200 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked: 3 h 21 min (12,038 s)
Ratio: 1.00× the request
How it ended: Ending not labelled yet
Grade: 2,259,764,529; 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 2150; Graded afterwards. The paper's value.
Wording: The standard sentence, used from 4 September 2026.
Run id: aqfc4dsinv
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	12.5 minutes	12 min 52 s	Within 5%
Middle	50 minutes	50 min 27 s	Within 5%
Longest (this run)	200 minutes	3 h 21 min	Within 5%
Other agents, longest request
GPT 6 Astra	200 minutes	3 h 21 min	Within 5%
Claude Fable 5.1	200 minutes	59 min 17 s	3.37× shorter

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