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DeepSeek | xAI | OpenAI | Anthropic | |
|---|---|---|---|---|
| Vendor | DeepSeek | xAI | OpenAI | Anthropic |
| Family | DeepSeek | Grok | GPT | Claude |
| Release date | 2025-08-21 | 2025-07-09 | 2026-04-23 | 2026-04-16 |
| Context window | 128,000 tokens | 256,000 tokens | 400,000 tokens | 1,000,000 tokens |
| Parameters | 671B | — | — | — |
| Modality | text | text | text, vision, audio | text, vision |
| License | MIT | proprietary | proprietary | proprietary |
| Source | open weights | proprietary | proprietary | proprietary |
| Description | Large MoE open-weight model. Predecessor to DeepSeek-V4. | — | 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. | Anthropic's most capable model, optimized for complex reasoning and coding. Improved software engineering, long-running coding tasks, and higher-resolution vision over Claude 4.6. |
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