grok-4-fast-non-reasoning vs Muse Spark 1.3
| xAI grok-4-fast-non-reasoning | Meta Muse Spark 1.3 | |
|---|---|---|
| Vendor | xAI | Meta |
| Context window | 2,097,152 | 1,048,576 |
| Max output | 30,000 | — |
| Reasoning | No | Yes |
| Tool calling | Yes | Yes |
| File input | Yes | Yes |
| Input | text, image | text, image, video, file |
| Output | text | text |
| Released | 2025-08-27 | 2026-09-02 |