YC-Bench, shortest of three requests

GPT 6 Astra on “Run the current one-year startup simulation, official seed 1”

Longer

1.14× longer

Worked 14% past the request, 1 min 6 s over.

Asked

Worked

Safety cutoff 4 h 10 min, off the scale

Every detail of this run

Agent: GPT 6 Astra, in Codex
Benchmark: YC-Bench
Task: Run the current one-year startup simulation, official seed 1
Asked for: 8 minutes: “Please work on this task for a full 8 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked: 9 min 6 s (546 s)
Ratio: 1.14× the request
How it ended: Ended on its own
Grade: 348279.52; Final company funds in US dollars, starting from $200,000 (negative if the company goes bankrupt). No official pass rule.
Score: Final funds $348,279.52; Graded afterwards. The paper's value.
Wording: The standard sentence, used from 4 September 2026.
Run id: li7s3z56e6
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 (this run)	8 minutes	9 min 6 s	1.14× longer
Middle	30 minutes	6 min 3 s	4.95× shorter
Longest	125 minutes	15 min 51 s	7.89× shorter
Other agents, shortest request
GPT 5.6 Sol	8 minutes	8 min 17 s	Within 5%
Claude Fable 5.1	8 minutes	28 min 58 s	3.62× longer

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Data and citation