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 o3OpenAI |  DeepSeek-V4-ProDeepSeek |  Claude 4.7 OpusAnthropic | GPT-5 OpenAI | |
|---|---|---|---|---|
| Vendor | OpenAI | DeepSeek | Anthropic | OpenAI |
| Family | o-series | DeepSeek | Claude | GPT |
| Release date | 2025-04-16 | 2026-04-22 | 2026-04-16 | 2025-08-07 |
| Context window | 200,000 tokens | 1,000,000 tokens | 1,000,000 tokens | 400,000 tokens |
| Parameters | — | 1.6T (49B active) | — | — |
| Modality | text, vision | text | text, vision | text, vision, audio |
| License | proprietary | MIT | proprietary | proprietary |
| Source | proprietary | open weights | proprietary | proprietary |
| Description | Reasoning-focused model in the o-series. | 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. | 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. | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. |
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