Sakana ALE-Bench, middle of three requests

GPT 5.6 Sol on “AtCoder Heuristic Contest 31”

Within 5%

Within 5%

Worked 102% of the time asked, within 5% of it.

Asked for
40 minutes
Worked
40 min 40 s
Grade
Performance 2135
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 40 s (2,440 s)
Ratio
1.02× the request
How it ended
Ended on its own
Grade
206,641,343
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 2135
Graded during the run. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
xsuh4txj6h
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 minutes10 min 54 s1.09× longer
Middle (this run)40 minutes40 min 40 sWithin 5%
Longest150 minutes2 h 37 minWithin 5%
Other agents, middle request
GPT 6 Astra40 minutes40 min 34 sWithin 5%
Claude Fable 5.140 minutes11 min 47 s3.39× shorter

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Data and citation

Upstream: Imajuku et al., 2025