Claude Sonnet 5 vs Grok 4.20 (Non-Reasoning)
| Anthropic Claude Claude Sonnet 5 | xAI Grok 4.20 (Non-Reasoning) | |
|---|---|---|
| Vendor | Anthropic Claude | xAI |
| Context window | 1,000,000 | 2,000,000 |
| Max output | 128,000 | 2,000,000 |
| Reasoning | Yes | No |
| Tool calling | Yes | Yes |
| File input | Yes | Yes |
| Input | text, image | text, image |
| Output | text | text |
| Released | 2026-06-29 | 2026-03-08 |