GPT-5.5 vs GLM 4.7 Flash
| OpenAI GPT-5.5 | Z.ai GLM 4.7 Flash | |
|---|---|---|
| Vendor | OpenAI | Z.ai |
| Context window | 1,050,000 | 128,000 |
| Max output | 128,000 | 4,096 |
| Reasoning | Yes | No |
| Tool calling | Yes | Yes |
| File input | Yes | Yes |
| Input | text, image | text, image |
| Output | text | text |
| Released | 2026-04-23 | 2025-08-26 |