Meta released Muse Spark Open, an open-weight model with 816 billion total parameters, 42 billion active parameters, and a 1 million-token context window, designed for coding and multi-step agentic tasks. The model is optimized to run locally across two Mac Studios equipped with 512GB M5 Ultra chips using Apple's MLX framework, which Meta calls the best desktop setup for running a powerful model. Apple has not yet released the 512GB Mac Studio, though it is expected later this month.
apple.slashdot.org
· 2026-10-15
Apple and Meta announced a collaboration allowing developers to run Meta's new 816-billion-parameter open-weight model, Muse Spark Open, locally on Mac Studio computers. Users can pair two to four Mac Studios to run the model for tasks like coding and video analysis without relying on cloud servers. Executives Mark Zuckerberg and John Ternus publicly confirmed the project on social media after months of joint work.
cnbc.com
· 2026-10-15
A new open-weight AI model, Muse Spark Open, has been released and optimized to run on Mac Studio machines with Apple's M5 Ultra chip, reportedly allowing two linked Macs to function like a single machine with a terabyte of unified memory. The release also includes custom Helion GPU kernels in SGLang that the developers say speed up performance on NVIDIA and AMD hardware, and the model underwent additional safety post-training evaluated against an internal scaling framework before release.
research.meta.ai
· 2026-10-15
Meta has open-sourced Muse Spark Open, an 800-billion-parameter model it calls the most capable US open-weight model yet. Running it locally requires roughly 1TB of unified memory, achievable by pairing two of Apple's upcoming M5 Ultra Mac Studios with 512GB each, or four 256GB units costing about $38,000. The weights are now downloadable from Hugging Face, and Meta says the model was built in collaboration with Apple to run on its new hardware.
engadget.com
· 2026-10-15
Meta launched Muse Spark Open, a multimodal model with 816 billion total parameters (42 billion active) and a 1 million-token context window, designed for coding and agentic tasks. The model is optimized using Apple's MLX framework to run on Mac Studio with M5 Ultra chips, with Meta demonstrating two linked Mac Studios handling the full model via unified memory. Weights are now available through Hugging Face.
9to5mac.com
· 2026-10-15
Meta launched Muse Spark Open, an 816-billion-parameter multimodal AI model it calls the most capable US open-weight model available, and said it can run on two Apple M5 Ultra Mac Studios using Apple's MLX framework. Apple published its own technical post on MLX and the new model, and executives from both companies publicly praised the collaboration, which Axios reported had been months in the making.
theverge.com
· 2026-10-15
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