Doubao-Seedream-4.5 vs GLM 5.3 Flash
| ByteDance Doubao-Seedream-4.5 | Z.ai GLM 5.3 Flash | |
|---|---|---|
| Vendor | ByteDance | Z.ai |
| Context window | — | 1,000,000 |
| Max output | — | 128,000 |
| Reasoning | No | Yes |
| Tool calling | No | Yes |
| File input | Yes | No |
| Input | text, image | text |
| Output | image | text |
| Released | 2025-12-02 | 2026-08-25 |