gpt-4 vs Claude Sonnet 5.5
| OpenAI gpt-4 | Anthropic Claude Claude Sonnet 5.5 | |
|---|---|---|
| Vendor | OpenAI | Anthropic Claude |
| Context window | 8,192 | 1,000,000 |
| Max output | 8,192 | 128,000 |
| Reasoning | No | Yes |
| Tool calling | Yes | Yes |
| File input | Yes | Yes |
| Input | text | text, image, file |
| Output | text | text |
| Released | 2023-11-06 | 2026-09-28 |