GPQA Diamond, longest of three requests

Muse Spark 1.3 on “GPQA Diamond closed-book question 21 (Physics)”

Shorter

1.41× shorter

Stopped at 71% of the time asked, 5 min 47 s short.

Asked

Worked

Safety cutoff 40 min, off the scale

Asked for: 20 minutes
Worked: 14 min 13 s
Grade: No grade recorded; This run is outside the paper's scores, and the campaign recorded no grade for it. Not in the paper's scores.
How it ended: Ending not labelled yet

Every detail of this run

Agent: Muse Spark 1.3, in Muse Code
Benchmark: GPQA Diamond
Task: GPQA Diamond closed-book question 21 (Physics)
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: 14 min 13 s (853 s)
Ratio: 0.71× the request
How it ended: Ending not labelled yet
Grade: No grade recorded; This run is outside the paper's scores, and the campaign recorded no grade for it.
Wording: The standard sentence, used from 4 September 2026.
Run id: ymxrcyvxez
Data release: 26 Sep 2026

The other requests for Muse Spark 1.3 on this task, and the other agents at this request
Muse on this task	Asked	Worked	Result
Shortest	1.25 minutes	1 min 12 s	Within 5%
Middle	5 minutes	57 s	5.23× shorter
Longest (this run)	20 minutes	14 min 13 s	1.41× shorter
Other agents, longest request
GPT 6 Astra	20 minutes	20 min 12 s	Within 5%
GPT 5.6 Sol	20 minutes	20 min 19 s	Within 5%
Claude Fable 5.1	20 minutes	58 s	20.83× shorter

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Read before quoting. How this run ended has not been labelled yet. It is timed like every other run and counted in every number. Details

Data and citation