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 DeepSeek-V3.1DeepSeek | DeepSeek-V4-Flash DeepSeek |  Gemini 2.5 Pro |  o3OpenAI | |
|---|---|---|---|---|
| Vendor | DeepSeek | DeepSeek | OpenAI | |
| Family | DeepSeek | DeepSeek | Gemini | o-series |
| Release date | 2025-08-21 | 2026-04-22 | 2025-03-25 | 2025-04-16 |
| Context window | 128,000 tokens | 1,000,000 tokens | 2,000,000 tokens | 200,000 tokens |
| Parameters | 671B | 284B (13B active) | — | — |
| Modality | text | text | text, vision, audio, video | text, vision |
| License | MIT | MIT | proprietary | proprietary |
| Source | open weights | open weights | proprietary | proprietary |
| Description | Large MoE open-weight model. Predecessor to DeepSeek-V4. | Smaller, faster sibling to DeepSeek-V4-Pro. Same 1M context window with a much lighter 284B / 13B-active MoE. | Predecessor to Gemini 3 Pro. | Reasoning-focused model in the o-series. |
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Mistral Large 2maxMax 4 models. Remove one to add another.