grok-4-fast-reasoning vs Gemini Omni Flash Preview
| xAI grok-4-fast-reasoning | Google Gemini Omni Flash Preview | |
|---|---|---|
| Vendor | xAI | |
| Context window | 2,097,152 | 65,536 |
| Max output | 30,000 | 32,768 |
| Reasoning | Yes | Yes |
| Tool calling | Yes | No |
| File input | Yes | Yes |
| Input | text, image | text, image |
| Output | text | video |
| Released | 2025-08-27 | 2026-06-30 |