GLM 5.3 vs Doubao-Seedream-5.0-pro
| Z.ai GLM 5.3 | ByteDance Doubao-Seedream-5.0-pro | |
|---|---|---|
| Vendor | Z.ai | ByteDance |
| Context window | 1,000,000 | — |
| Max output | 128,000 | — |
| Reasoning | Yes | No |
| Tool calling | Yes | No |
| File input | No | Yes |
| Input | text | text, image |
| Output | text | image |
| Released | 2026-08-28 | 2026-07-08 |