MiMo-V2.6-Pro UltraSpeed vs GPT-5
| Xiaomi MiMo-V2.6-Pro UltraSpeed | OpenAI GPT-5 | |
|---|---|---|
| Vendor | Xiaomi | OpenAI |
| Context window | 1,048,576 | 400,000 |
| Max output | 131,072 | 128,000 |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| File input | Yes | Yes |
| Input | text, image, audio, video | text, image |
| Output | text | text |
| Released | 2026-09-22 | 2025-08-07 |