TUA-Bench, middle of three requests

Muse Spark 1.3 on “Merge text document”

Shorter

2.68× shorter

Stopped at 37% of the time asked, 3 min 8 s short.

Asked

Worked

Safety cutoff 40 min, off the scale

Asked for: 5 minutes
Worked: 1 min 52 s
Grade: Did not pass; Score 0 of 100. Graded during the run. Not in the paper's scores.
How it ended: Stopped by an error

Every detail of this run

Agent: Muse Spark 1.3, in Muse Code
Benchmark: TUA-Bench
Task: Merge text document
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: 1 min 52 s (112 s)
Ratio: 0.37× the request
How it ended: Stopped by an error
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: dgklafvk7u
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	no run
Middle (this run)	5 minutes	1 min 52 s	2.68× shorter
Longest	20 minutes	1 min 7 s	17.99× shorter
Other agents, middle request
GPT 6 Astra	5 minutes	5 min 19 s	1.06× longer
GPT 5.6 Sol	5 minutes	5 min 26 s	1.08× longer
Claude Fable 5.1	5 minutes	10 min 37 s	2.12× longer

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