Agents' Last Exam, longest of three requests
GPT 6 Astra on “Route a KiCad PCB from the staged schematic”
Within 5%
Within 5%Worked 101% of the time asked, within 5% of it.
- Asked for
- 150 minutes
- Worked
- 2 h 32 min
- Grade
- Passed
- Score 100 of 100. Graded during the run.
- How it ended
- Ended on its own
Every detail of this run
- Agent
- GPT 6 Astra, in Codex
- Benchmark
- Agents' Last Exam
- Asked for
- 150 minutes: “Please work on this task for a full 150 minutes. Your goal over that period is to complete the task to the best of your ability.”
- Worked
- 2 h 32 min (9,108 s)
- Ratio
- 1.01× the request
- How it ended
- Ended on its own
- Grade
- Passed
- It passed the task's checker in full. The grader returned 1. Pass rule: Full pass: a checker score of 1.
- Score
- 100 of 100
- Graded during the run. The paper's value.
- Wording
- The standard sentence, used from 4 September 2026.
- Run id
- xpo2z43fzl
- Data release
- 26 Sep 2026
Related runs
| Astra on this task | Asked | Worked | Split | Result |
|---|---|---|---|---|
| Shortest | 10 minutes | 10 min 23 s | Within 5% | |
| Middle | 40 minutes | 41 min 3 s | Within 5% | |
| Longest (this run) | 150 minutes | 2 h 32 min | Within 5% | |
| Other agents, longest request | ||||
| GPT 5.6 Sol | 150 minutes | 1 h 32 min | 1.63× shorter | |
| Claude Fable 5.1 | 150 minutes | 39 min 36 s | 3.79× shorter | |
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Data and citation
Upstream: Sun et al., 2026