Gemini Omni Flash Preview vs GPT-5
| Google Gemini Omni Flash Preview | OpenAI GPT-5 | |
|---|---|---|
| Vendor | OpenAI | |
| Context window | 65,536 | 400,000 |
| Max output | 32,768 | 128,000 |
| Reasoning | Yes | Yes |
| Tool calling | No | Yes |
| File input | Yes | Yes |
| Input | text, image | text, image |
| Output | video | text |
| Released | 2026-06-29 | 2025-08-07 |