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 DeepSeek-V3.1DeepSeek |  Gemini 3 Pro |  GPT-5OpenAI | Gemini 2.5 Flash | |
|---|---|---|---|---|
| Vendor | DeepSeek | OpenAI | ||
| Family | DeepSeek | Gemini | GPT | Gemini |
| Release date | 2025-08-21 | 2026-04-22 | 2025-08-07 | — |
| Context window | 128,000 tokens | 2,000,000 tokens | 400,000 tokens | 1,000,000 tokens |
| Parameters | 671B | — | — | — |
| Modality | text | text, vision, audio, video | text, vision, audio | text, vision, audio |
| License | MIT | proprietary | proprietary | proprietary |
| Source | open weights | proprietary | proprietary | proprietary |
| Description | Large MoE open-weight model. Predecessor to DeepSeek-V4. | Google DeepMind's flagship multimodal model. Best-in-class for multimodal understanding and agentic / vibe coding workflows. A "Deep Think" reasoning mode is available to AI Ultra subscribers. | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. | — |
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Mistral Large 2maxMax 4 models. Remove one to add another.