o3-mini vs Gemini 3 Pro Preview
| OpenAI o3-mini | Google Gemini 3 Pro Preview | |
|---|---|---|
| Vendor | OpenAI | |
| Context window | 200,000 | 1,000,000 |
| Max output | 100,000 | 64,000 |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| File input | No | Yes |
| Input | text | text, image, video, audio, file |
| Output | text | text |
| Released | 2024-12-20 | 2025-11-18 |