GPT-5.4 Nano vs Kimi K2.5
| OpenAI GPT-5.4 Nano | Moonshot Kimi K2.5 | |
|---|---|---|
| Vendor | OpenAI | Moonshot |
| Context window | 400,000 | 256,144 |
| Max output | 128,000 | 16,384 |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| File input | Yes | Yes |
| Input | text, image | text, video, file, image |
| Output | text | text |
| Released | 2026-03-17 | 2026-01-27 |