Muse Spark 1.3 vs grok-4-1-fast-non-reasoning
| Meta Muse Spark 1.3 | xAI grok-4-1-fast-non-reasoning | |
|---|---|---|
| Vendor | Meta | xAI |
| Context window | 1,048,576 | 2,097,152 |
| Max output | — | 32,768 |
| Reasoning | Yes | No |
| Tool calling | Yes | Yes |
| File input | Yes | Yes |
| Input | text, image, video, file | text, image |
| Output | text | text |
| Released | 2026-09-02 | 2025-11-19 |