ProgramBench, middle of three requests

GPT 5.6 Sol on “stathissideris/ditaa”

Within 5%

Worked 95% of the time asked, within 5% of it.

Asked

Worked

Safety cutoff 4 h 10 min, off the scale

Every detail of this run

Agent: GPT 5.6 Sol, in Codex
Benchmark: ProgramBench
Task: stathissideris/ditaa
Asked for: 30 minutes: “Please work on this task for a full 30 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked: 28 min 32 s (1,712 s)
Ratio: 0.95× the request
How it ended: Ending not labelled yet
Grade: Did not pass; It did not pass every hidden test. The grader returned 0.189. Pass rule: Resolved: every hidden test passes.
Score: 18.9 of 100; Graded afterwards. The paper's value.
Wording: The standard sentence, used from 4 September 2026.
Run id: oviwdsgddv
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	8 minutes	21 min 29 s	2.69× longer
Middle (this run)	30 minutes	28 min 32 s	Within 5%
Longest	125 minutes	2 h 6 min	Within 5%
Other agents, middle request
GPT 6 Astra	30 minutes	30 min 20 s	Within 5%
Claude Fable 5.1	30 minutes	2 h 29 min	4.98× longer

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Data and citation