Sakana ALE-Bench, middle of three requests

GPT 5.6 Sol on “AtCoder Heuristic Contest 16”

Within 5%

Within 5%

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

Asked for
40 minutes
Worked
40 min 25 s
Grade
Performance 2943
Graded afterwards.
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 25 s (2,425 s)
Ratio
1.01× the request
How it ended
Ended on its own
Grade
70,103,086,148
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 2943
Graded afterwards. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
kytsqumhtu
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 minutes18 min 7 s1.81× longer
Middle (this run)40 minutes40 min 25 sWithin 5%
Longest150 minutes2 h 31 minWithin 5%
Other agents, middle request
GPT 6 Astra40 minutes40 min 44 sWithin 5%
Claude Fable 5.140 minutes12 min 2 s3.32× shorter

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

Data and citation

Upstream: Imajuku et al., 2025