Compare models
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 Gemini 2.5 Pro |  DeepSeek-V4-FlashDeepSeek |  o3OpenAI | |
|---|---|---|---|
| Vendor | DeepSeek | OpenAI | |
| Family | Gemini | DeepSeek | o-series |
| Release date | 2025-03-25 | 2026-04-22 | 2025-04-16 |
| Context window | 2,000,000 tokens | 1,000,000 tokens | 200,000 tokens |
| Parameters | — | 284B (13B active) | — |
| Modality | text, vision, audio, video | text | text, vision |
| License | proprietary | MIT | proprietary |
| Source | proprietary | open weights | proprietary |
| Description | Predecessor to Gemini 3 Pro. | Smaller, faster sibling to DeepSeek-V4-Pro. Same 1M context window with a much lighter 284B / 13B-active MoE. | Reasoning-focused model in the o-series. |
| Links |
