Gemini 3 Flash Preview vs GPT-5.6 Luna
| Google Gemini 3 Flash Preview | OpenAI GPT-5.6 Luna | |
|---|---|---|
| Vendor | OpenAI | |
| Context window | 1,048,576 | 1,050,000 |
| Max output | 65,536 | 128,000 |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| File input | Yes | Yes |
| Input | text, image, video, audio, file | text, image |
| Output | text | text |
| Released | 2025-12-17 | 2026-07-08 |