Muse Spark Open
Meta🇺🇸
meta/muse-spark-openMuse Spark Open is Meta's open-weight multimodal mixture-of-experts model (about 816B total, 42B active parameters, 1M-token context) that takes text, images, audio, and video and outputs text. It ships under Meta's Muse Model License with limited commercial terms and is Meta's most capable open-weight release, with strong tool-calling results.
Cost rate
0.9x
Context
1M
Released
Oct 15, 2026
Input
TextImageVideoFileAudio
Output
Text
Support
ReasoningTool callingStructured outputs
Best at
The categories where this model ranks highest.
No top-ranked categories found.
Performance
Median latency and throughput measured across recent requests.
Throughput142 tok/s
Latency