Compare models
Pick up to 4models. Specs render side-by-side. Share the URL — it's stateless.
 o3OpenAI |  Gemini 2.5 Pro |  Claude 4.6 SonnetAnthropic | |
|---|---|---|---|
| Vendor | OpenAI | Anthropic | |
| Family | o-series | Gemini | Claude |
| Release date | 2025-04-16 | 2025-03-25 | — |
| Context window | 200,000 tokens | 2,000,000 tokens | 200,000 tokens |
| Parameters | — | — | — |
| Modality | text, vision | text, vision, audio, video | text, vision |
| License | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary |
| Description | Reasoning-focused model in the o-series. | Predecessor to Gemini 3 Pro. | — |
| Links |
