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 Grok 4xAI |  o3OpenAI |  Gemini 2.5 Pro | |
|---|---|---|---|
| Vendor | xAI | OpenAI | |
| Family | Grok | o-series | Gemini |
| Release date | 2025-07-09 | 2025-04-16 | 2025-03-25 |
| Context window | 256,000 tokens | 200,000 tokens | 2,000,000 tokens |
| Parameters | — | — | — |
| Modality | text | text, vision | text, vision, audio, video |
| License | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary |
| Description | — | Reasoning-focused model in the o-series. | Predecessor to Gemini 3 Pro. |
| Links | |||
| Benchmarks | |||
| MMLU-Pro | 82.8% | — | 84.1% |
| GPQA-D | 87.5% | 87.7% | 84.0% |
| Aider | 72.5% | — | — |
| AIME-25 | 86.1% | 88.9% | — |
| LiveCB | 65.3% | — | — |
| MMMU | — | — | 72.4% |
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Claude 4.8 Opus+
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Mistral Large 2+