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 DeepSeek-R1DeepSeek |  Grok 4xAI | DeepSeek-V4-Pro DeepSeek | DeepSeek-V4-Flash DeepSeek | |
|---|---|---|---|---|
| Vendor | DeepSeek | xAI | DeepSeek | DeepSeek |
| Family | DeepSeek | Grok | DeepSeek | DeepSeek |
| Release date | 2025-01-20 | 2025-07-09 | 2026-04-22 | 2026-04-22 |
| Context window | 128,000 tokens | 256,000 tokens | 1,000,000 tokens | 1,000,000 tokens |
| Parameters | 671B | — | 1.6T (49B active) | 284B (13B active) |
| Modality | text | text | text | text |
| License | MIT | proprietary | MIT | MIT |
| Source | open weights | proprietary | open weights | open weights |
| Description | Reasoning-focused open-weight model. | — | 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. | Smaller, faster sibling to DeepSeek-V4-Pro. Same 1M context window with a much lighter 284B / 13B-active MoE. |
| Links | ||||
| Benchmarks | ||||
| MMLU-Pro | — | 82.8% | 84.2% | — |
| GPQA-D | — | 87.5% | 82.4% | — |
| HumanEval | — | — | 95.1% | — |
| Aider | — | 72.5% | 80.1% | — |
| AIME-25 | 79.8% | 86.1% | 88.6% | — |
| LiveCB | — | 65.3% | 72.4% | — |
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