Compare models
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 Claude 4.6 SonnetAnthropic |  DeepSeek-V3.1DeepSeek | DeepSeek-R1 DeepSeek | |
|---|---|---|---|
| Vendor | Anthropic | DeepSeek | DeepSeek |
| Family | Claude | DeepSeek | DeepSeek |
| Release date | — | 2025-08-21 | 2025-01-20 |
| Context window | 200,000 tokens | 128,000 tokens | 128,000 tokens |
| Parameters | — | 671B | 671B |
| Modality | text, vision | text | text |
| License | proprietary | MIT | MIT |
| Source | proprietary | open weights | open weights |
| Description | — | Large MoE open-weight model. Predecessor to DeepSeek-V4. | Reasoning-focused open-weight model. |
| Links |
