Grok 4.20 vs Seedance 2.0 Fast
| xAI Grok 4.20 | ByteDance Seedance 2.0 Fast | |
|---|---|---|
| Vendor | xAI | ByteDance |
| Context window | 2,000,000 | — |
| Max output | 2,000,000 | — |
| Reasoning | Yes | No |
| Tool calling | Yes | No |
| File input | Yes | Yes |
| Input | text, image | text, image, video, audio |
| Output | text | video |
| Released | 2026-03-08 | 2026-02-12 |