gpt-3.5-turbo vs Claude Opus 5
| OpenAI gpt-3.5-turbo | Anthropic Claude Claude Opus 5 | |
|---|---|---|
| Vendor | OpenAI | Anthropic Claude |
| Context window | 16,385 | 1,000,000 |
| Max output | 4,096 | 128,000 |
| Reasoning | No | Yes |
| Tool calling | No | Yes |
| File input | No | Yes |
| Input | text | text, image |
| Output | text | text |
| Released | 2023-03-01 | 2026-07-23 |