Sakana ALE-Bench, middle of three requests

GPT 5.6 Sol on “AtCoder Heuristic Contest 39”

Within 5%

Within 5%

Worked 101% of the time asked, within 5% of it.

Asked for
40 minutes
Worked
40 min 31 s
Grade
Performance 3390
Graded during the run.
How it ended
Ended on its own
Every detail of this run
Agent
GPT 5.6 Sol, in Codex
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
40 min 31 s (2,431 s)
Ratio
1.01× the request
How it ended
Ended on its own
Grade
570,267
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 3390
Graded during the run. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
3pdle5ubsb
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 taskAskedWorkedSplitResult
Shortest10 minutes12 min 25 s1.24× longer
Middle (this run)40 minutes40 min 31 sWithin 5%
Longest150 minutes2 h 32 minWithin 5%
Other agents, middle request
GPT 6 Astra40 minutes40 min 37 sWithin 5%
Claude Fable 5.140 minutes13 min 25 s2.98× shorter

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Data and citation

Upstream: Imajuku et al., 2025