Compare models
Pick up to 4models. Specs render side-by-side. Share the URL — it's stateless.
 o3OpenAI |  Gemini 2.5 Pro |  Grok 4xAI | |
|---|---|---|---|
| Vendor | OpenAI | xAI | |
| Family | o-series | Gemini | Grok |
| Release date | 2025-04-16 | 2025-03-25 | 2025-07-09 |
| Context window | 200,000 tokens | 2,000,000 tokens | 256,000 tokens |
| Parameters | — | — | — |
| Modality | text, vision | text, vision, audio, video | text |
| License | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary |
| Description | Reasoning-focused model in the o-series. | Predecessor to Gemini 3 Pro. | — |
| Links |
