GPQA Diamond, longest of three requests

GPT 6 Astra on “GPQA Diamond closed-book question 13 (Chemistry)”

Shorter

1.29× shorter

Stopped at 78% of the time asked, 4 min 29 s short.

Asked

Worked

Safety cutoff 40 min, off the scale

Every detail of this run

Agent: GPT 6 Astra, in Codex
Benchmark: GPQA Diamond
Task: GPQA Diamond closed-book question 13 (Chemistry)
Asked for: 20 minutes: “Please work on this task for a full 20 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked: 15 min 31 s (931 s)
Ratio: 0.78× the request
How it ended: Stopped by an error
Grade: Did not pass; It did not pick the correct letter. The grader returned 0. Pass rule: The answer letter matches the key.
Score: 0 of 100; Nothing to grade, counted as 0. The paper's value.
Wording: The standard sentence, used from 4 September 2026.
Run id: eo52lnfciu
Data release: 26 Sep 2026

The other requests for GPT 6 Astra on this task, and the other agents at this request
Astra on this task	Asked	Worked	Result
Shortest	1.25 minutes	1 min 22 s	1.10× longer
Middle	5 minutes	5 min 10 s	Within 5%
Longest (this run)	20 minutes	15 min 31 s	1.29× shorter
Other agents, longest request
GPT 5.6 Sol	20 minutes	20 min 14 s	Within 5%
Claude Fable 5.1	20 minutes	17 min 29 s	1.14× shorter
Muse Spark 1.3	20 minutes	2 min 50 s	7.05× shorter

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

Read before quoting. This run was stopped by an error, so its time is a lower bound: the agent might have kept going. Details

Data and citation