TUA-Bench, shortest of three requests

GPT 5.6 Sol on “Merge text document”

Longer

3.05× longer

Worked 205% past the request, 2 min 34 s over.

Asked

Worked

Safety cutoff 40 min, off the scale

Every detail of this run

Agent: GPT 5.6 Sol, in Codex
Benchmark: TUA-Bench
Task: Merge text document
Asked for: 1.25 minutes: “Please work on this task for a full 1.25 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked: 3 min 49 s (229 s)
Ratio: 3.05× 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 during the run. The paper's value.
Wording: The standard sentence, used from 4 September 2026.
Run id: dhmw3r3vu5
Data release: 26 Sep 2026

The other requests for GPT 5.6 Sol on this task, and the other agents at this request
Sol on this task	Asked	Worked	Result
Shortest (this run)	1.25 minutes	3 min 49 s	3.05× longer
Middle	5 minutes	5 min 26 s	1.08× longer
Longest	20 minutes	21 min 13 s	1.06× longer
Other agents, shortest request
GPT 6 Astra	1.25 minutes	1 min 48 s	1.44× longer
Claude Fable 5.1	1.25 minutes	3 min 29 s	2.79× longer

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