Claude Sonnet 5 vs Claude Opus 4.5
| Anthropic Claude Claude Sonnet 5 | Anthropic Claude Claude Opus 4.5 | |
|---|---|---|
| Vendor | Anthropic Claude | Anthropic Claude |
| Context window | 1,000,000 | 200,000 |
| Max output | 128,000 | 64,000 |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| File input | Yes | Yes |
| Input | text, image, file | text, image, file |
| Output | text | text |
| Released | 2026-06-30 | 2025-11-24 |