CORE-Bench v1.1, longest of three requests

GPT 6 Astra on “Run and render CNN short-term temperature forecasting results”

Within 5%

Worked 101% of the time asked, within 5% of it.

Asked

Worked

Safety cutoff 2 h, off the scale

Asked for: 60 minutes
Worked: 1 h 1 min
Grade: Files not found; The files this run saved have not been found, so it has no grade.
How it ended: Ended on its own

Every detail of this run

Agent: GPT 6 Astra, in Codex
Benchmark: CORE-Bench v1.1
Task: Run and render CNN short-term temperature forecasting results
Asked for: 60 minutes: “Please work on this task for a full 60 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked: 1 h 1 min (3,642 s)
Ratio: 1.01× the request
How it ended: Ended on its own
Grade: Files not found; The files this run saved have not been found, so it has no grade.
Wording: The standard sentence, used from 4 September 2026.
Run id: 2fab6pywd5
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	4 minutes	4 min 17 s	1.07× longer
Middle	15 minutes	15 min 21 s	Within 5%
Longest (this run)	60 minutes	1 h 1 min	Within 5%
Other agents, longest request
GPT 5.6 Sol	60 minutes	8 min 36 s	6.98× shorter
Claude Fable 5.1	60 minutes	10 min 13 s	5.87× shorter

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Data and citation