YC-Bench, shortest of three requests

GPT 6 Astra on “Run the current one-year startup simulation, official seed 2”

Longer

1.08× longer

Worked 8% past the request, 41 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 2
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: 8 min 41 s (521 s)
Ratio: 1.08× the request
How it ended: Ended on its own
Grade: 401690.93; Final company funds in US dollars, starting from $200,000 (negative if the company goes bankrupt). No official pass rule.
Score: Final funds $401,690.93; Graded afterwards. The paper's value.
Wording: The standard sentence, used from 4 September 2026.
Run id: b726mc4ocl
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	8 min 41 s	1.08× longer
Middle	30 minutes	2 min 8 s	14.04× shorter
Longest	125 minutes	11 min 4 s	11.30× shorter
Other agents, shortest request
GPT 5.6 Sol	8 minutes	8 min 36 s	1.07× longer
Claude Fable 5.1	8 minutes	1 h 8 min	8.45× longer

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Data and citation