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 Grok 4xAI |  o3OpenAI |  Mistral Large 2Mistral |  Gemini 3.5 | |
|---|---|---|---|---|
| Vendor | xAI | OpenAI | Mistral | |
| Family | Grok | o-series | Mistral | Gemini |
| Release date | 2025-07-09 | 2025-04-16 | 2024-07-24 | 2026-05-20 |
| Context window | 256,000 tokens | 200,000 tokens | 128,000 tokens | 2,000,000 tokens |
| Parameters | — | — | 123B | — |
| Modality | text | text, vision | text | text, vision, audio, video |
| License | proprietary | proprietary | Mistral Research License | proprietary |
| Source | proprietary | proprietary | open weights | proprietary |
| Description | — | Reasoning-focused model in the o-series. | 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. | Google DeepMind's next-gen Gemini — positioned as "frontier intelligence with action". Built for complex agentic workflows. Announced at Google I/O 2026. |
| Links | ||||
| Benchmarks | ||||
| MMLU-Pro | 82.8% | — | — | 88.9% |
| GPQA-D | 87.5% | 87.7% | — | 91.2% |
| HumanEval | — | — | 89.0% | — |
| Aider | 72.5% | — | — | — |
| AIME-25 | 86.1% | 88.9% | — | 96.1% |
| LiveCB | 65.3% | — | — | — |
| MMMU | — | — | — | 86.0% |
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