GLM 5.3 vs gpt-4-gizmo-*
| Z.ai GLM 5.3 | OpenAI gpt-4-gizmo-* | |
|---|---|---|
| Vendor | Z.ai | OpenAI |
| Context window | 1,000,000 | — |
| Max output | 128,000 | — |
| Reasoning | Yes | No |
| Tool calling | Yes | No |
| File input | No | No |
| Input | text | text, image |
| Output | text | text |
| Released | 2026-08-28 | — |
| Z.ai GLM 5.3 | OpenAI gpt-4-gizmo-* | |
|---|---|---|
| Vendor | Z.ai | OpenAI |
| Context window | 1,000,000 | — |
| Max output | 128,000 | — |
| Reasoning | Yes | No |
| Tool calling | Yes | No |
| File input | No | No |
| Input | text | text, image |
| Output | text | text |
| Released | 2026-08-28 | — |