GPT-5.2 Pro vs Kimi K3
| OpenAI GPT-5.2 Pro | Moonshot Kimi K3 | |
|---|---|---|
| Vendor | OpenAI | Moonshot |
| Context window | 400,000 | 1,048,576 |
| 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 | 2025-12-11 | 2026-07-16 |