gpt-oss-120b
- Made by
- OpenAI
- Released
- Announced in
- Introducing gpt-ossopenai.com
- Event
- gpt-oss-120b and gpt-oss-20b
- API record
- /api/v1/models/gpt-oss-120b
Benchmark results
| Benchmark | Score | Source check |
|---|---|---|
| Humanity's Last ExamNo tools | 14.9% | CheckedA person checked this number against its source on 20 Oct 2026. This confirms the number matches what the lab published, not that the score was reproduced. |
| Humanity's Last ExamWith tools · tools not named | 19% | CheckedA person checked this number against its source on 20 Oct 2026. This confirms the number matches what the lab published, not that the score was reproduced. |
| GPQA Diamondno tools | 80.1% | CheckedA person checked this number against its source on 17 Oct 2026. This confirms the number matches what the lab published, not that the score was reproduced. |
Sources
Reported by OpenAI
- Introducing gpt-ossopenai.com · 5 Aug 2025
Our capture of the source 
Our capture of the source