Key figures: 816 billion parameters; 1 million‑token context window; requires ≥1 TB RAM; runs best on Mac Studio with M5 Ultra chip; launched Thursday; open‑weight model named Muse Spark Open.
Context
Meta unveiled Muse Spark Open, the most capable open‑weight AI model in the US. It is multimodal, optimized for complex coding and agentic workflows, and can run locally on Apple Macs—though it demands massive memory. Meta paired it with Muse Code and demonstrated use cases like fixing a Mastodon client and editing video in DaVinci Resolve. The model is now available via multiple API platforms.
Bottom Line
The launch signals Meta’s push into open‑weight AI, offering developers a powerful, transparent alternative to closed models. While the hardware demands limit immediate mass adoption, firms with high‑end Macs could leverage the model for coding and media tasks, potentially boosting demand for Apple’s M‑series chips and related AI tooling.