Claude Sonnet 5.5 vs Gemini 3 Pro Preview
| Anthropic Claude Claude Sonnet 5.5 | Google Gemini 3 Pro Preview | |
|---|---|---|
| Vendor | Anthropic Claude | |
| Context window | 1,000,000 | 1,000,000 |
| Max output | 128,000 | 64,000 |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| File input | Yes | Yes |
| Input | text, image, file | text, image, video, audio, file |
| Output | text | text |
| Released | 2026-09-28 | 2025-11-18 |