Sakana ALE-Bench, shortest of three requests

GPT 5.6 Sol on “AtCoder Heuristic Contest 31”

Longer

1.09× longer

Worked 9% past the request, 54 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 31
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: 10 min 54 s (654 s)
Ratio: 1.09× the request
How it ended: Ended on its own
Grade: 21,221,962,438; 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 1647; Graded during the run. The paper's value.
Wording: The standard sentence, used from 4 September 2026.
Run id: klyr3q37qp
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	10 min 54 s	1.09× longer
Middle	40 minutes	40 min 40 s	Within 5%
Longest	150 minutes	2 h 37 min	Within 5%
Other agents, shortest request
GPT 6 Astra	10 minutes	11 min 7 s	1.11× longer
Claude Fable 5.1	10 minutes	6 min 40 s	1.50× shorter

See it on the chart. Transcripts are not published yet.

Data and citation