Terminal-Bench 4.0, longest of three requests

GPT 6 Astra on “Build and apply a five-day ERP/MES/WMS production plan”

Within 5%

Worked 100% of the time asked, within 5% of it.

Asked

Worked

Safety cutoff 2 h 40 min, off the scale

Every detail of this run

Agent: GPT 6 Astra, in Codex
Benchmark: Terminal-Bench 4.0
Task: Build and apply a five-day ERP/MES/WMS production plan
Asked for: 80 minutes: “Please work on this task for a full 80 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked: 1 h 20 min (4,820 s)
Ratio: 1.00× the request
How it ended: Ending not labelled yet
Grade: Did not pass; It did not pass the task's tests. The grader returned 0. Pass rule: The task's tests pass.
Score: 0 of 100; Graded afterwards. The paper's value.
Wording: The standard sentence, used from 4 September 2026.
Run id: ty6yrhn5be
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	5 minutes	5 min 35 s	1.12× longer
Middle	20 minutes	20 min 23 s	Within 5%
Longest (this run)	80 minutes	1 h 20 min	Within 5%
Other agents, longest request
GPT 5.6 Sol	80 minutes	1 h 21 min	Within 5%
Claude Fable 5.1	80 minutes	32 min 19 s	2.48× shorter

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Data and citation