gpt-4-gizmo-* vs Muse Spark 1.3
| OpenAI gpt-4-gizmo-* | Meta Muse Spark 1.3 | |
|---|---|---|
| Vendor | OpenAI | Meta |
| Context window | — | 1,048,576 |
| Max output | — | — |
| Reasoning | No | Yes |
| Tool calling | No | Yes |
| File input | No | Yes |
| Input | text, image | text, image, video, file |
| Output | text | text |
| Released | — | 2026-09-02 |