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 DeepSeek-V3.1DeepSeek | DeepSeek-V4-Flash DeepSeek |  Grok 4xAI | DeepSeek-V4-Pro DeepSeek | |
|---|---|---|---|---|
| Vendor | DeepSeek | DeepSeek | xAI | DeepSeek |
| Family | DeepSeek | DeepSeek | Grok | DeepSeek |
| Release date | 2025-08-21 | 2026-04-22 | 2025-07-09 | 2026-04-22 |
| Context window | 128,000 tokens | 1,000,000 tokens | 256,000 tokens | 1,000,000 tokens |
| Parameters | 671B | 284B (13B active) | — | 1.6T (49B active) |
| Modality | text | text | text | text |
| License | MIT | MIT | proprietary | MIT |
| Source | open weights | open weights | proprietary | open weights |
| 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. | — | 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. |
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Mistral Large 2maxMax 4 models. Remove one to add another.