GPT-5.1 vs gpt-3.5-turbo
| OpenAI GPT-5.1 | OpenAI gpt-3.5-turbo | |
|---|---|---|
| Vendor | OpenAI | OpenAI |
| Context window | 400,000 | 16,385 |
| Max output | 128,000 | 4,096 |
| Reasoning | Yes | No |
| Tool calling | Yes | No |
| File input | Yes | No |
| Input | text, image | text |
| Output | text | text |
| Released | 2025-11-12 | 2023-03-01 |