GPT Image 2 vs GLM 4.7 Flash
| OpenAI GPT Image 2 | Z.ai GLM 4.7 Flash | |
|---|---|---|
| Vendor | OpenAI | Z.ai |
| Context window | 128,000 | 128,000 |
| Max output | — | 4,096 |
| Reasoning | No | No |
| Tool calling | No | Yes |
| File input | Yes | Yes |
| Input | text, image | text, image |
| Output | image | text |
| Released | 2026-04-21 | 2025-08-26 |