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 o3OpenAI |  Qwen3 235BAlibaba | GPT-5.5 OpenAI |  Mistral Large 2Mistral | |
|---|---|---|---|---|
| Vendor | OpenAI | Alibaba | OpenAI | Mistral |
| Family | o-series | Qwen | GPT | Mistral |
| Release date | 2025-04-16 | 2025-04-29 | 2026-04-23 | 2024-07-24 |
| Context window | 200,000 tokens | 128,000 tokens | 400,000 tokens | 128,000 tokens |
| Parameters | — | 235B | — | 123B |
| Modality | text, vision | text | text, vision, audio | text |
| License | proprietary | Apache-2.0 | proprietary | Mistral Research License |
| Source | proprietary | open weights | proprietary | open weights |
| Description | Reasoning-focused model in the o-series. | Predecessor to the Qwen3.6 family. | 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. | Large text-only Mistral model with a 128K context window and 123B parameters, tuned for strong instruction following and long-context reasoning. Mistral's flagship open-weights release in the Large 2 line. |
| Links | ||||
| Benchmarks | ||||
| MMLU-Pro | — | — | 87.6% | — |
| GPQA-D | 87.7% | — | 89.4% | — |
| HumanEval | — | — | 96.8% | 89.0% |
| Aider | — | — | 89.7% | — |
| AIME-25 | 88.9% | — | 94.2% | — |
| LiveCB | — | — | 78.9% | — |
| MMMU | — | — | 78.4% | — |
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