Gemini 3.1 Pro Preview Customtools vs Muse Spark 1.3
| Google Gemini 3.1 Pro Preview Customtools | Meta Muse Spark 1.3 | |
|---|---|---|
| Vendor | Meta | |
| Context window | 1,048,576 | 1,048,576 |
| Max output | 65,536 | — |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| File input | Yes | Yes |
| Input | text, image, video, audio, file | text, image, video, file |
| Output | text | text |
| Released | 2026-02-19 | 2026-09-02 |