Sakana ALE-Bench, middle of three requests

GPT 5.6 Sol on “AtCoder Heuristic Contest 8”

Within 5%

Within 5%

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

Asked for
60 minutes
Worked
1 h 1 min
Grade
Performance 1640
Graded afterwards.
How it ended
Ended on its own
Every detail of this run
Agent
GPT 5.6 Sol, in Codex
Asked for
60 minutes: “Please work on this task for a full 60 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked
1 h 1 min (3,635 s)
Ratio
1.01× the request
How it ended
Ended on its own
Grade
62,421,014,493
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 1640
Graded afterwards. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
eslgqlxb3f
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
Shortest15 minutes15 min 45 sWithin 5%
Middle (this run)60 minutes1 h 1 minWithin 5%
Longest250 minutes4 h 11 minWithin 5%
Other agents, middle request
GPT 6 Astra60 minutes1 h 1 minWithin 5%
Claude Fable 5.160 minutes48 min 50 s1.23× shorter

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Data and citation

Upstream: Imajuku et al., 2025