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 GPT-5OpenAI |  Mistral Large 2Mistral | o3 OpenAI |  DeepSeek-V4-FlashDeepSeek | |
|---|---|---|---|---|
| Vendor | OpenAI | Mistral | OpenAI | DeepSeek |
| Family | GPT | Mistral | o-series | DeepSeek |
| Release date | 2025-08-07 | 2024-07-24 | 2025-04-16 | 2026-04-22 |
| Context window | 400,000 tokens | 128,000 tokens | 200,000 tokens | 1,000,000 tokens |
| Parameters | — | 123B | — | 284B (13B active) |
| Modality | text, vision, audio | text | text, vision | text |
| License | proprietary | Mistral Research License | proprietary | MIT |
| Source | proprietary | open weights | proprietary | open weights |
| Description | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. | — | 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. |
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