Grok 4.20 vs Gemini 3 Flash Preview
| xAI Grok 4.20 | Google Gemini 3 Flash Preview | |
|---|---|---|
| Vendor | xAI | |
| Context window | 2,000,000 | 1,048,576 |
| Max output | 2,000,000 | 65,536 |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| File input | Yes | Yes |
| Input | text, image | text, image, video, audio, file |
| Output | text | text |
| Released | 2026-03-08 | 2025-12-17 |