kimi-k2-thinking vs grok-4-fast-non-reasoning
| Moonshot kimi-k2-thinking | xAI grok-4-fast-non-reasoning | |
|---|---|---|
| Vendor | Moonshot | xAI |
| Context window | 262,144 | 2,097,152 |
| Max output | 262,144 | 30,000 |
| Reasoning | Yes | No |
| Tool calling | Yes | Yes |
| File input | Yes | Yes |
| Input | text | text, image |
| Output | text | text |
| Released | 2025-11-06 | 2025-08-27 |