Meta releases open-weight 'Muse Spark Open' 816B model
Meta released Muse Spark Open, an 816B-total (42B active) multimodal mixture-of-experts model with a 1M-token context, aimed at coding and agents. Weights are available on Hugging Face, SageMaker, and other hubs, with API access via Fireworks, Groq, Baseten, Modal, Nebius, OpenRouter, and Together — under a Muse Model License that restricts commercial use.