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 DeepSeek-V4-FlashDeepSeek |  o3OpenAI | GPT-5.5 OpenAI |  Mistral Large 2Mistral | |
|---|---|---|---|---|
| Vendor | DeepSeek | OpenAI | OpenAI | Mistral |
| Family | DeepSeek | o-series | GPT | Mistral |
| Release date | 2026-04-22 | 2025-04-16 | 2026-04-23 | 2024-07-24 |
| Context window | 1,000,000 tokens | 200,000 tokens | 400,000 tokens | 128,000 tokens |
| Parameters | 284B (13B active) | — | — | 123B |
| Modality | text | text, vision | text, vision, audio | text |
| License | MIT | proprietary | proprietary | Mistral Research License |
| Source | open weights | proprietary | proprietary | open weights |
| Description | Smaller, faster sibling to DeepSeek-V4-Pro. Same 1M context window with a much lighter 284B / 13B-active MoE. | Reasoning-focused model in the o-series. | 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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