Terminal-Bench 4.0, middle of three requests

GPT 5.6 Sol on “Repair a React lead form and its auditable CRM submission pipeline”

Shorter

1.14× shorter

Stopped at 88% of the time asked, 3 min 7 s short.

Asked

Worked

Safety cutoff 3 h 20 min, off the scale

Every detail of this run

Agent: GPT 5.6 Sol, in Codex
Benchmark: Terminal-Bench 4.0
Task: Repair a React lead form and its auditable CRM submission pipeline
Asked for: 25 minutes: “Please work on this task for a full 25 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked: 21 min 54 s (1,314 s)
Ratio: 0.88× the request
How it ended: Ending not labelled yet
Grade: Passed; It passed the task's tests. The grader returned 1. Pass rule: The task's tests pass.
Score: 100 of 100; Graded afterwards. The paper's value.
Wording: The standard sentence, used from 4 September 2026.
Run id: egz7u63w67
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	6 minutes	10 min 40 s	1.78× longer
Middle (this run)	25 minutes	21 min 54 s	1.14× shorter
Longest	100 minutes	1 h 41 min	Within 5%
Other agents, middle request
GPT 6 Astra	25 minutes	25 min 14 s	Within 5%
Claude Fable 5.1	25 minutes	21 min 35 s	1.16× shorter

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