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 Gemini Omni |  GPT-5.5OpenAI | Gemini 3.5 | GPT-5 OpenAI | |
|---|---|---|---|---|
| Vendor | OpenAI | OpenAI | ||
| Family | Gemini | GPT | Gemini | GPT |
| Release date | 2026-05-20 | 2026-04-23 | 2026-05-20 | 2025-08-07 |
| Context window | 1,000,000 tokens | 400,000 tokens | 2,000,000 tokens | 400,000 tokens |
| Parameters | — | — | — | — |
| Modality | text, vision, audio, video | text, vision, audio | text, vision, audio, video | text, vision, audio |
| License | proprietary | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary | proprietary |
| Description | Multimodal Gemini variant introduced at Google I/O 2026 — unified text, image, audio, and video processing in a single model. | 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. | Google DeepMind's next-gen Gemini — positioned as "frontier intelligence with action". Built for complex agentic workflows. Announced at Google I/O 2026. | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. |
| Links | ||||
| Benchmarks | ||||
| MMLU-Pro | — | 87.6% | 88.9% | 85.1% |
| GPQA-D | — | 89.4% | 91.2% | 87.3% |
| HumanEval | — | 96.8% | — | 95.2% |
| Aider | — | 89.7% | — | 85.4% |
| AIME-25 | — | 94.2% | 96.1% | 91.0% |
| LiveCB | — | 78.9% | — | 74.5% |
| MMMU | 82.5% | 78.4% | 86.0% | 74.1% |
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Mistral Large 2maxMax 4 models. Remove one to add another.