TUA-Bench, middle of three requests

GPT 6 Astra on “Author homepage bookmarks”

Longer

1.43× longer

Worked 43% past the request, 4 min 15 s over.

Asked

Worked

Safety cutoff 1 h 20 min, off the scale

Every detail of this run

Agent: GPT 6 Astra, in Codex
Benchmark: TUA-Bench
Task: Author homepage bookmarks
Asked for: 10 minutes: “Please work on this task for a full 10 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked: 14 min 15 s (855 s)
Ratio: 1.43× the request
How it ended: Ended on its own
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 afterwards. The paper's value.
Wording: The standard sentence, used from 4 September 2026.
Run id: riibnkotz7
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	2.5 minutes	2 min 49 s	1.13× longer
Middle (this run)	10 minutes	14 min 15 s	1.43× longer
Longest	40 minutes	40 min 30 s	Within 5%
Other agents, middle request
GPT 5.6 Sol	10 minutes	11 min 38 s	1.16× longer
Claude Fable 5.1	10 minutes	3 min 57 s	2.54× shorter

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Data and citation