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Meta's Muse Spark Open Model Runs Locally on Mac Studios

Meta's Muse Spark Open Model Runs Locally on Mac Studios

First seen 17 Oct 2026, 16:47 UTC • •

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ThreatCluster AI
ThreatCluster •October 18, 2026 at 16:38 UTC
  • •Muse Spark Open is an 816-billion-parameter AI model by Meta.
  • •It runs locally on two Apple M5 Ultra Mac Studios using the MLX framework.
  • •The model is designed for coding and agentic tasks, enhancing data privacy.

Meta has released Muse Spark Open, an 816-billion-parameter AI model designed for coding and agentic tasks, which can run locally on two Apple M5 Ultra Mac Studios using the MLX framework. This model is significant as it allows developers to utilize advanced AI capabilities without relying on cloud servers, thus enhancing data privacy. Muse Spark Open is optimized for specific workloads, including coding and long-horizon tasks, and is reportedly the largest open-weight model released by an American company this year. It features a 1-million-token context window and is available under limited commercial terms. The collaboration with Apple ensures that the model can operate efficiently on local hardware, which is a first for models of this scale. The model's performance is expected to close the gap with Chinese alternatives in the open-weight AI landscape. However, it requires substantial hardware resources, making it less accessible for typical users.

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Timeline

2026-10-15
Muse Spark Open released
Meta announced the release of Muse Spark Open, an 816-billion-parameter AI model optimized for local execution.
Feeds.4Sysops
2026-10-16
Apple MLX framework updated
Apple released an update to the MLX framework, enabling the local execution of Muse Spark Open on Mac Studios.
News.Ycombinator
2026-10-16
Meta showcases Muse Spark Open capabilities
Meta demonstrated Muse Spark Open's ability to perform tasks like bug fixes for iOS apps and video editing without cloud connectivity.
Philiphall

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Common questions

What hardware is required to run Muse Spark Open?
Muse Spark Open requires two Apple M5 Ultra Mac Studios with a combined memory of 1TB.
What tasks can Muse Spark Open perform?
It is optimized for coding and long-horizon agentic tasks, allowing for local execution without cloud dependencies.
How does this model compare to others in the market?
Muse Spark Open is the largest open-weight model released by an American company this year, designed to compete with powerful closed models.