Gemini Omni Flash Preview vs GPT Image 2.5 Dev
| Google Gemini Omni Flash Preview | OpenAI GPT Image 2.5 Dev | |
|---|---|---|
| Vendor | OpenAI | |
| Context window | 65,536 | — |
| Max output | 32,768 | — |
| Reasoning | Yes | No |
| Tool calling | No | No |
| File input | Yes | Yes |
| Input | text, image | text, image |
| Output | video | image |
| Released | 2026-06-30 | 2026-09-08 |