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xAI | OpenAI | |||
|---|---|---|---|---|
| Vendor | xAI | OpenAI | ||
| Family | Gemini | Grok | o-series | Gemini |
| Release date | 2026-05-20 | 2025-07-09 | 2025-04-16 | 2026-05-20 |
| Context window | 2,000,000 tokens | 256,000 tokens | 200,000 tokens | 1,000,000 tokens |
| Parameters | — | — | — | — |
| Modality | text, vision, audio, video | text | text, vision | text, vision, audio, video |
| License | proprietary | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary | proprietary |
| Description | Google DeepMind's next-gen Gemini — positioned as "frontier intelligence with action". Built for complex agentic workflows. Announced at Google I/O 2026. | — | Reasoning-focused model in the o-series. | Multimodal Gemini variant introduced at Google I/O 2026 — unified text, image, audio, and video processing in a single model. |
| Links | ||||
| Benchmarks | ||||
| MMLU-Pro | 88.9% | 82.8% | — | — |
| GPQA-D | 91.2% | 87.5% | 87.7% | — |
| Aider | — | 72.5% | — | — |
| AIME-25 | 96.1% | 86.1% | 88.9% | — |
| LiveCB | — | 65.3% | — | — |
| MMMU | 86.0% | — | — | 82.5% |
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