gemini-2.5-flash vs GPT-5.5
| Google gemini-2.5-flash | OpenAI GPT-5.5 | |
|---|---|---|
| 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, audio, video, file | text, image |
| Output | text | text |
| Released | 2025-03-20 | 2026-04-23 |