Claude Sonnet 4.5 vs gpt-4
| Anthropic Claude Claude Sonnet 4.5 | OpenAI gpt-4 | |
|---|---|---|
| Vendor | Anthropic Claude | OpenAI |
| Context window | 200,000 | 8,192 |
| Max output | 64,000 | 8,192 |
| Reasoning | Yes | No |
| Tool calling | Yes | Yes |
| File input | Yes | Yes |
| Input | text, image, file | text |
| Output | text | text |
| Released | 2025-09-29 | 2023-11-06 |