Muse Spark 1.3 Contributor vs Grok 4.20 Multi-Agent
| Meta Muse Spark 1.3 Contributor | xAI Grok 4.20 Multi-Agent | |
|---|---|---|
| Vendor | Meta | xAI |
| Context window | 1,048,576 | 2,048,000 |
| Max output | — | 1,000,000 |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| File input | Yes | Yes |
| Input | text, image, video, file | text, image |
| Output | text | text |
| Released | — | 2026-03-09 |