Compare models
Pick up to 4models. Specs render side-by-side. Share the URL — it's stateless.
 o3OpenAI |  DeepSeek-R1DeepSeek |  Gemini 2.5 Pro | |
|---|---|---|---|
| Vendor | OpenAI | DeepSeek | |
| Family | o-series | DeepSeek | Gemini |
| Release date | 2025-04-16 | 2025-01-20 | 2025-03-25 |
| Context window | 200,000 tokens | 128,000 tokens | 2,000,000 tokens |
| Parameters | — | 671B | — |
| Modality | text, vision | text | text, vision, audio, video |
| License | proprietary | MIT | proprietary |
| Source | proprietary | open weights | proprietary |
| Description | Reasoning-focused model in the o-series. | Reasoning-focused open-weight model. | Predecessor to Gemini 3 Pro. |
| Links |
