GPQA Diamond, middle of three requests

Muse Spark 1.3 on “GPQA Diamond closed-book question 16 (Physics)”

Shorter

5.47× shorter

Stopped at 18% of the time asked, 4 min 5 s short.

Asked

Worked

Safety cutoff 40 min, off the scale

Asked for: 5 minutes
Worked: 55 s
Grade: Passed; Score 100 of 100. Graded during the run. Not in the paper's scores.
How it ended: Ended on its own

Every detail of this run

Agent: Muse Spark 1.3, in Muse Code
Benchmark: GPQA Diamond
Task: GPQA Diamond closed-book question 16 (Physics)
Asked for: 5 minutes: “Please work on this task for a full 5 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked: 55 s (55 s)
Ratio: 0.18× the request
How it ended: Ended on its own
Grade: Passed; It picked the correct letter. The grader returned 1. Pass rule: The answer letter matches the key.
Score: 100 of 100; Graded during the run. Not in the paper's scores.
Clock tool: The agent could call a clock tool to check the requested time.
Wording: The standard sentence, used from 4 September 2026.
Run id: ns3gntjrgx
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 36 s	1.27× longer
Middle (this run)	5 minutes	55 s	5.47× shorter
Longest	20 minutes	1 min 10 s	17.19× shorter
Other agents, middle request
GPT 6 Astra	5 minutes	5 min 8 s	Within 5%
GPT 5.6 Sol	5 minutes	5 min 13 s	Within 5%
Claude Fable 5.1	5 minutes	2 min 9 s	2.33× shorter

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Data and citation