Nano Banana (Gemini 2.5 Flash Image 🍌) vs GPT Image 2.5 Dev
| Google Nano Banana (Gemini 2.5 Flash Image 🍌) | OpenAI GPT Image 2.5 Dev | |
|---|---|---|
| Vendor | OpenAI | |
| Context window | 32,768 | — |
| Max output | 32,768 | — |
| Reasoning | Yes | No |
| Tool calling | No | No |
| File input | Yes | Yes |
| Input | text, image | text, image |
| Output | image | image |
| Released | 2025-08-26 | 2026-09-08 |