Muse Spark Open is available free to download under a commercial license requiring the label 'Built with Muse Spark Open,' while API providers earning over $20 million annually require a separate agreement

From the article"Mommy and daddy" play nice: Apple and Meta team up to bring open-source Muse to MacsAlso in Muse Spark Open is Meta's answer to Qwen, GLM, and Kimi in the open-weight race