Muse Spark Open
Released weights for an 816B-parameter MoE model (about 42B active) that takes text, image, video and audio input.
816B / 42Btotal / active parameters
Why it matters
Six months after going closed, Meta returned to open weights, though under its own Muse license.
Built on
Source: huggingface.co ↗
Official page not opened for verification; URL taken from citations in multiple reports.