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OpenAI | OpenAI | Mistral | Anthropic | |
|---|---|---|---|---|
| Vendor | OpenAI | OpenAI | Mistral | Anthropic |
| Family | o-series | GPT | Mistral | Claude |
| Release date | 2025-04-16 | 2025-04-14 | 2024-07-24 | 2026-04-16 |
| Context window | 200,000 tokens | 1,000,000 tokens | 128,000 tokens | 1,000,000 tokens |
| Parameters | — | — | 123B | — |
| Modality | text, vision | text, vision | text | text, vision |
| License | proprietary | proprietary | Mistral Research License | proprietary |
| Source | proprietary | proprietary | open weights | proprietary |
| Description | Reasoning-focused model in the o-series. | — | — | 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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