Meta releases Muse Spark Open for local Mac use

Meta released Muse Spark Open on October 15, describing it as an 816-billion-parameter open-weight artificial intelligence model designed to run locally across two Apple M5 Ultra Mac Studios. The model has 42 billion active parameters and a one-million-token context window, according to the company. Meta says it worked with Apple to optimize the model using Apple’s MLX framework. Each Mac Studio can provide up to 512 gigabytes of unified memory, allowing the two-computer setup to hold the model in a combined memory pool of up to one terabyte. Meta said the system can run the model without relying on cloud infrastructure. The release makes the model weights available through platforms including Hugging Face, Amazon SageMaker AI, Google Cloud Model Garden and Microsoft Foundry Models. Meta also lists hosted access through inference providers. The weights are distributed under Meta’s Muse Model License, which permits many developers to use them for free but includes limited commercial terms. Meta presents Muse Spark Open as a model for coding and agent-based tasks, including complex software engineering and multistep work. In demonstrations described by the company, its Muse Code...