TUA-Bench, shortest of three requests

Muse Spark 1.3 on “Daily email report”

Longer

1.19× longer

Worked 19% past the request, 17 s over.

Asked

Worked

Safety cutoff 50 min, off the scale

Asked for: 1.5 minutes
Worked: 1 min 47 s
Grade: Did not pass; Score 0 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: TUA-Bench
Task: Daily email report
Asked for: 1.5 minutes: “Please work on this task for a full 1.5 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked: 1 min 47 s (107 s)
Ratio: 1.19× the request
How it ended: Ended on its own
Grade: Did not pass; It did not complete the task in full. The grader returned 0. Pass rule: Full completion: a reward of 1 on the final state.
Score: 0 of 100; Graded during the run. Not in the paper's scores.
Wording: The standard sentence, used from 4 September 2026.
Run id: xpxfpmovse
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 (this run)	1.5 minutes	1 min 47 s	1.19× longer
Middle	6 minutes	2 min 14 s	2.69× shorter
Longest	25 minutes	2 min 10 s	11.54× shorter
Other agents, shortest request
GPT 6 Astra	1.5 minutes	1 min 43 s	1.15× longer
GPT 5.6 Sol	1.5 minutes	1 min 49 s	1.21× longer
Claude Fable 5.1	1.5 minutes	1 min 11 s	1.26× shorter

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Data and citation