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 DeepSeek-R1DeepSeek |  Qwen3.6-27BAlibaba | DeepSeek-V4-Pro DeepSeek | DeepSeek-V3.1 DeepSeek | |
|---|---|---|---|---|
| Vendor | DeepSeek | Alibaba | DeepSeek | DeepSeek |
| Family | DeepSeek | Qwen | DeepSeek | DeepSeek |
| Release date | 2025-01-20 | 2026-04-22 | 2026-04-22 | 2025-08-21 |
| Context window | 128,000 tokens | 262,144 tokens | 1,000,000 tokens | 128,000 tokens |
| Parameters | 671B | 27B (dense) | 1.6T (49B active) | 671B |
| Modality | text | text, vision, video | text | text |
| License | MIT | Apache-2.0 | MIT | MIT |
| Source | open weights | open weights | open weights | open weights |
| Description | Reasoning-focused open-weight model. | Alibaba's first dense open-weight in the 3.6 family. Strong agentic-coding scores (77.2 SWE-bench Verified, matching Claude 4.5 Opus on Terminal-Bench 2.0). Supports 201 languages and multimodal text/image/video input. | 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. |
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