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 DeepSeek-R1DeepSeek |  GPT-5.5OpenAI |  Mistral Large 2Mistral |  Claude 4.5 HaikuAnthropic | |
|---|---|---|---|---|
| Vendor | DeepSeek | OpenAI | Mistral | Anthropic |
| Family | DeepSeek | GPT | Mistral | Claude |
| Release date | 2025-01-20 | 2026-04-23 | 2024-07-24 | 2025-10-01 |
| Context window | 128,000 tokens | 400,000 tokens | 128,000 tokens | 200,000 tokens |
| Parameters | 671B | — | 123B | — |
| Modality | text | text, vision, audio | text | text, vision |
| License | MIT | proprietary | Mistral Research License | proprietary |
| Source | open weights | proprietary | open weights | proprietary |
| Description | Reasoning-focused open-weight model. | OpenAI's smartest and most intuitive model — successor to GPT-5, with major coding, research, and document workflow gains. GPT-5.5 Pro variant also available for heavier reasoning. | — | Fast, cost-effective Claude model. |
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