Meta and Apple team up to make Muse AI models run better on Macs
What's happening
Meta released Muse Spark Open, which it calls "the most capable US open-weight model to date," and says the model can run locally on Apple silicon. Muse Spark Open is described with concrete specs in community posts: 816B total parameters, 42B active, a 1M token context window, and multimodal support for text, image, video, and audio. Meta says the model can run on desktop hardware using two Apple M5 Ultra Mac Studios with the latest MLX framework; Meta also announced larger Muse Wonder models and a Muse AI agent in the same wave of releases.
Why it's trending
Because Meta packaged a high-capability open-weight model with explicit Apple silicon support and hardware targets, making local Mac AI a practical story right now.
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If you think "AI on Macs" is marketing fluff, two Apple M5 Ultra Mac Studios running Muse Spark Open just proved otherwise, and Meta picked the hardware it trusts to make local models realistic today.
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Original sources7
- Meta launches an open-weight AI model that runs on Macs
Meta and Apple have teamed up for the launch of the social media giant's newest model, Muse Spark Open, which will run locally on Apple silicon.
TechCrunch AIOct 15 - Introducing Muse Spark Open: the most capable US open-weight model to date
Hey r/LocalLlama - Today we’re excited to release Muse Spark Open, the most capable US open-weight model to date. Built for coding and agentic work, it excels at long-horizon tasks, complex software engineering, and multi-step reasoning. Key Model Specs Parameters: 816B total / 42B active Context Window: 1M tokens Modalities: Text, image, video, audio Safety Post-Training: Additional safety post-t
r/LocalLLaMAOct 15 - Muse Spark OpenHackerNewsOct 15
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