Pyyan / Compare / Grok 4.20 Reasoning vs Gemini 3.1 Pro
Language Models · verified 13 Aug 2026
| Specification | Grok 4.20 Reasoning | Gemini 3.1 Pro |
|---|---|---|
| Summary | Agentic reasoning SKU. | Best for very large multimodal context. |
| Context | 1M | 1M |
| Input ($/Mtok) | $1.25 | — |
| Output ($/Mtok) | $2.5 | — |
| Licence | Proprietary | Proprietary |
| Model ID | grok-4.20-0309-reasoning | — |
| Category | Language Models | Language Models |
| Official | xAI ↗ | Google ↗ |
Highlighted rows are where these differ.
Best for long documents.