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 DeepSeek-V3.1DeepSeek |  GPT-4.1OpenAI |  Mistral Large 2Mistral | GPT-5 OpenAI | |
|---|---|---|---|---|
| Vendor | DeepSeek | OpenAI | Mistral | OpenAI |
| Family | DeepSeek | GPT | Mistral | GPT |
| Release date | 2025-08-21 | 2025-04-14 | 2024-07-24 | 2025-08-07 |
| Context window | 128,000 tokens | 1,000,000 tokens | 128,000 tokens | 400,000 tokens |
| Parameters | 671B | — | 123B | — |
| Modality | text | text, vision | text | text, vision, audio |
| License | MIT | proprietary | Mistral Research License | proprietary |
| Source | open weights | proprietary | open weights | proprietary |
| Description | Large MoE open-weight model. Predecessor to DeepSeek-V4. | — | — | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. |
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