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 Gemini 2.5 Pro | Gemini Omni |  Grok 4xAI |  GPT-5OpenAI | |
|---|---|---|---|---|
| Vendor | xAI | OpenAI | ||
| Family | Gemini | Gemini | Grok | GPT |
| Release date | 2025-03-25 | 2026-05-20 | 2025-07-09 | 2025-08-07 |
| Context window | 2,000,000 tokens | 1,000,000 tokens | 256,000 tokens | 400,000 tokens |
| Parameters | — | — | — | — |
| Modality | text, vision, audio, video | text, vision, audio, video | text | text, vision, audio |
| License | proprietary | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary | proprietary |
| Description | Predecessor to Gemini 3 Pro. | Multimodal Gemini variant introduced at Google I/O 2026 — unified text, image, audio, and video processing in a single model. | — | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. |
| Links | ||||
| Benchmarks | ||||
| MMLU-Pro | 84.1% | — | 82.8% | 85.1% |
| GPQA-D | 84.0% | — | 87.5% | 87.3% |
| HumanEval | — | — | — | 95.2% |
| Aider | — | — | 72.5% | 85.4% |
| AIME-25 | — | — | 86.1% | 91.0% |
| LiveCB | — | — | 65.3% | 74.5% |
| MMMU | 72.4% | 82.5% | — | 74.1% |
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