Muse Spark Open runs on-device across two Apple Mac Studios

Meta's 816B-parameter open-weight model can run on a pair of M5 Ultra Mac Studios with 1,024GB of unified memory — a 'supercomputer' on the desk, running some agentic tasks fully on-device.

In this brief: 3 sections 1 min read

- Built for coding and agentic work: long-horizon tasks, complex software engineering, multi-step reasoning.
- Up to 3.95x kernel-level speedups on AMD and NVIDIA GPUs.
- Weights on Hugging Face; MLX pulls them directly for Apple silicon.
- Meta: first model in its class to run on desktops via two Mac Studios with the MLX framework.
- On-device inference keeps data on the local machine instead of the cloud.
- Apple's 512GB Mac Studio variant arrives this month.
- Limited commercial license lets developers use the Muse family models free.
- Customizable via TorchTitan.
- Follows the smaller Muse Glimmer for PCs released in August.

Read full analysis on digit.in

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