o1 vs o3
| Benchmark | o1 | o3 |
|---|---|---|
| Humanity's Last Exam | 7 | 20.1 |
| MMMU-Pro (vision) | — | 70.1 |
Specs
| Spec | o1 | o3 |
|---|---|---|
| Input, per 1M | $15 | $2 |
| Output, per 1M | $60 | $8 |
| Speed, tok/s | — | 167 |
| Context | 200K | 200K |
| Weights | Closed | Closed |
| Released | Dec 2024 | Apr 2025 |
| See images | ✓ | ✓ |
| Read PDFs | Partial | Partial |
| Hear audio | — | — |
| Watch video | — | — |
| Call tools | ✓ | ✓ |
| Force a tool call | Partial | Partial |
| Return strict JSON | ✓ | ✓ |
| Search the web | ? | ? |
| Run code | ? | ? |
| Use a computer | ? | ? |
What breaks when you switch
o1 → o3
Nothing known.
o3 → o1
Nothing known.