Meta's Muse Spark Open features 816 billion total parameters, 42 billion active parameters, up to 1 million tokens of context window, and native multimodal support for text, image, video, and audio

From the articleMuse Spark Open is Meta's answer to Qwen, GLM, and Kimi in the open-weight raceAlso in Meta and Apple team up to make Muse AI models run better on Macs, "Mommy and daddy" play nice: Apple and Meta team up to bring open-source Muse to Macs