Wire · opportunities
Introducing Muse Spark Open, The Most Capable US Open‑Weight Model to Date
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Fusion42 · 15 October 2026 · Fusion42 review
Meta released Muse Spark Open, the most capable US open-weight AI model with 816 billion parameters optimized to run on desktop Apple M5 Ultra Mac Studios, enabling complex coding and multi-step reasoning locally. The model supports multiple inference engines, is available on major cloud platforms, and is released under a license with limited commercial terms.
This Wire brief sits within Fusion42's coverage of AI & ML, and 15 sources have reported it between 15 Oct 2026 and 16 Oct 2026.
◆ ◆ The Wire takeaway
You can now run leading-edge AI models locally on Apple M5 Ultra Macs, cutting your reliance on cloud providers and speeding up complex software projects. This shift unlocks new possibilities for on-device AI customisation and development workflows without infrastructure delays or costs.
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15 sources · first reported 15 Oct 2026 · latest 16 Oct 2026
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