TUA-Bench, middle of three requests

GPT 6 Astra on “Merge text document”

Longer

1.06× longer

Worked 6% past the request, 19 s over.

Asked

Worked

Safety cutoff 40 min, off the scale

Every detail of this run

Agent: GPT 6 Astra, in Codex
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: 5 min 19 s (319 s)
Ratio: 1.06× the request
How it ended: Ending not labelled yet
Grade: Passed; It completed the task in full. The grader returned 1. Pass rule: Full completion: a reward of 1 on the final state.
Score: 100 of 100; Graded during the run. The paper's value.
Wording: The standard sentence, used from 4 September 2026.
Run id: jwrvnwunf3
Data release: 26 Sep 2026

The other requests for GPT 6 Astra on this task, and the other agents at this request
Astra on this task	Asked	Worked	Result
Shortest	1.25 minutes	1 min 48 s	1.44× longer
Middle (this run)	5 minutes	5 min 19 s	1.06× longer
Longest	20 minutes	20 min 17 s	Within 5%
Other agents, middle request
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
Muse Spark 1.3	5 minutes	1 min 52 s	2.68× shorter

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

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