TUA-Bench, shortest of three requests

Muse Spark 1.3 on “Author homepage bookmarks”

Longer

1.32× longer

Worked 32% past the request, 48 s over.

Asked

Worked

Safety cutoff 1 h 20 min, off the scale

Asked for: 2.5 minutes
Worked: 3 min 18 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: Author homepage bookmarks
Asked for: 2.5 minutes: “Please work on this task for a full 2.5 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked: 3 min 18 s (198 s)
Ratio: 1.32× 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: mvyjwhm2wz
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)	2.5 minutes	3 min 18 s	1.32× longer
Middle	10 minutes	no run
Longest	40 minutes	no run
Other agents, shortest request
GPT 6 Astra	2.5 minutes	2 min 49 s	1.13× longer
GPT 5.6 Sol	2.5 minutes	3 min 43 s	1.49× longer
Claude Fable 5.1	2.5 minutes	2 min 46 s	1.11× longer

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

Data and citation