Gemini 3 Flash Preview vs Claude Sonnet 4.5
| Google Gemini 3 Flash Preview | Anthropic Claude Claude Sonnet 4.5 | |
|---|---|---|
| Vendor | Anthropic Claude | |
| Context window | 1,048,576 | 200,000 |
| Max output | 65,536 | 64,000 |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| File input | Yes | Yes |
| Input | text, image, video, audio, file | text, image, file |
| Output | text | text |
| Released | 2025-12-17 | 2025-09-29 |