https://dev.meta.ai/resources/blog/build-with-muse-spark-ope...https://9to5mac.com/2026/10/15/meta-launches-new-muse-spark-...
Muse Spark Open
Muse Spark Open is the most capable US open-weight model to date, and brings leading agentic capabilities to your desktop on Apple M5 Ultra Mac Studios.
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Key takeaways
Muse Spark Open, a powerful open-weight model, is now available for desktop use on Apple M5 Ultra Mac Studios.
- Muse Spark Open has 816B parameters and runs on Apple M5 Ultra Mac Studios with MLX framework.
- It supports coding, agentic work, and multi-step reasoning with a 1M-token context window.
- The model is accessible via API platforms and can be customized using PyTorch.
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