Humanity's Last Exam, shortest of three requests
GPT 5.6 Sol on “Humanity's Last Exam item 9”
Longer
2.01× longerWorked 101% past the request, 1 min 16 s over.
- Asked for
- 1.25 minutes
- Worked
- 2 min 31 s
- Grade
- Passed
- Score 100 of 100. Graded during the run.
- How it ended
- Ended on its own
Every detail of this run
- Agent
- GPT 5.6 Sol, in Codex
- Benchmark
- Humanity's Last Exam
- Asked for
- 1.25 minutes: “Please work on this task for a full 1.25 minutes. Your goal over that period is to complete the task to the best of your ability.”
- Worked
- 2 min 31 s (151 s)
- Ratio
- 2.01× the request
- How it ended
- Ended on its own
- Grade
- Passed
- It was marked correct by the judge. The grader returned 1. Pass rule: The benchmark's own judge marks the answer correct.
- Score
- 100 of 100
- Graded during the run. The paper's value.
- Clock tool
- The agent could call a clock tool to check the requested time.
- Wording
- The standard sentence, used from 4 September 2026.
- Run id
- s4ms3ttyjx
- Data release
- 26 Sep 2026
Related runs
| Sol on this task | Asked | Worked | Split | Result |
|---|---|---|---|---|
| Shortest (this run) | 1.25 minutes | 2 min 31 s | 2.01× longer | |
| Middle | 5 minutes | 5 min 8 s | Within 5% | |
| Longest | 20 minutes | 20 min 17 s | Within 5% | |
| Other agents, shortest request | ||||
| GPT 6 Astra | 1.25 minutes | 1 min 24 s | 1.12× longer | |
| Claude Fable 5.1 | 1.25 minutes | 4 min 31 s | 3.61× longer | |
See it on the chart. Transcripts are not published yet.
Data and citation
Upstream: Phan et al., 2025