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 o3OpenAI |  DeepSeek-V4-FlashDeepSeek |  Claude 4.7 OpusAnthropic | GPT-5.5 OpenAI | |
|---|---|---|---|---|
| Vendor | OpenAI | DeepSeek | Anthropic | OpenAI |
| Family | o-series | DeepSeek | Claude | GPT |
| Release date | 2025-04-16 | 2026-04-22 | 2026-04-16 | 2026-04-23 |
| Context window | 200,000 tokens | 1,000,000 tokens | 1,000,000 tokens | 400,000 tokens |
| Parameters | — | 284B (13B 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. | Smaller, faster sibling to DeepSeek-V4-Pro. Same 1M context window with a much lighter 284B / 13B-active MoE. | 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 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. |
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Mistral Large 2maxMax 4 models. Remove one to add another.