Terminal-Bench 4.0, longest of three requests

GPT 6 Astra on “Repair a React lead form and its auditable CRM submission pipeline”

Within 5%

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

Asked

Worked

Safety cutoff 3 h 20 min, off the scale

Every detail of this run

Agent: GPT 6 Astra, in Codex
Benchmark: Terminal-Bench 4.0
Task: Repair a React lead form and its auditable CRM submission pipeline
Asked for: 100 minutes: “Please work on this task for a full 100 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked: 1 h 40 min (6,028 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: jqllscofeu
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	6 minutes	6 min 11 s	Within 5%
Middle	25 minutes	25 min 14 s	Within 5%
Longest (this run)	100 minutes	1 h 40 min	Within 5%
Other agents, longest request
GPT 5.6 Sol	100 minutes	1 h 41 min	Within 5%
Claude Fable 5.1	100 minutes	28 min 50 s	3.47× 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