GPT Image 2 Develop vs GPT-5.1
| OpenAI GPT Image 2 Develop | OpenAI GPT-5.1 | |
|---|---|---|
| Vendor | OpenAI | OpenAI |
| Context window | 128,000 | 400,000 |
| Max output | — | 128,000 |
| Reasoning | No | Yes |
| Tool calling | No | Yes |
| File input | Yes | Yes |
| Input | text, image | text, image |
| Output | image | text |
| Released | 2026-04-20 | 2025-11-12 |