Meta Releases Open-Weights AI Model "Muse Spark Open" Tuned for Apple Mac Studios

Meta has released Muse Spark Open, an open-weights AI model with 816 billion total parameters (42 billion active) designed for coding and long-running agent work. Developed in collaboration with Apple, this mixture-of-experts model boasts a 1 million token context window and is specifically tuned to run on the new M5 Ultra Mac Studios. This collaboration marks a significant move towards enabling frontier-class open AI models to run locally on desktop hardware, reducing reliance on cloud APIs for advanced AI tasks.