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 DeepSeek-V4-ProDeepSeek |  Gemini 2.5 Flash | DeepSeek-V3.1 DeepSeek |  GPT-5OpenAI | |
|---|---|---|---|---|
| Vendor | DeepSeek | DeepSeek | OpenAI | |
| Family | DeepSeek | Gemini | DeepSeek | GPT |
| Release date | 2026-04-22 | — | 2025-08-21 | 2025-08-07 |
| Context window | 1,000,000 tokens | 1,000,000 tokens | 128,000 tokens | 400,000 tokens |
| Parameters | 1.6T (49B active) | — | 671B | — |
| Modality | text | text, vision, audio | text | text, vision, audio |
| License | MIT | proprietary | MIT | proprietary |
| Source | open weights | proprietary | open weights | proprietary |
| Description | DeepSeek's flagship open-weight MoE. 1.6T parameters with 49B activated, 1M-token context, and a hybrid attention scheme (CSA + HCA) that delivers long-context inference at ~27% of V3.2's FLOPs. | — | 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 Superseded by GPT-5.5 in April 2026.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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Gemini 2.5 Flash✓
Claude 4.6 SonnetmaxGPT-5.5maxDeepSeek-V4-Flashmax
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Mistral Large 2maxMax 4 models. Remove one to add another.