Introducing Muse Spark Open, The Most Capable US Open‑Weight Model to Date

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.

913 points by bigwheels 6 days ago research.meta.ai 473 comments

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https://dev.meta.ai/resources/blog/build-with-muse-spark-ope...

https://huggingface.co/meta-models/Muse-Spark-Open-816B-A42B

https://9to5mac.com/2026/10/15/meta-launches-new-muse-spark-...

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