Meta launches an open-weight AI model that runs on Macs
Meta has released a new open-weight artificial intelligence model called Muse Spark Open. According to the company, it is the most capable open-weight model in the United States and is designed specifically to work with Apple computers.
Meta has released a new open-weight artificial intelligence model called Muse Spark Open. According to the company, it is the most capable open-weight model in the United States and is designed specifically to work with Apple computers. The model uses 816 billion parameters and includes a 1 million token context window.
Meta states that evaluation results released on Thursday show the model offers superior performance compared to other popular open-weight options. It is natively multimodal, meaning it can process multiple types of data, and is built for complex coding tasks and agentic labor, which refers to automated systems that perform multi-step tasks.
Running the model locally requires significant hardware. Engadget reports that users need at least one terabyte of RAM, and Meta notes the model runs best on a Mac Studio equipped with the M5 Ultra chip. Meta paired Muse Spark Open with its Muse Code terminal to fix bugs and build features for a Mastodon client, as well as to review and crop video footage in DaVinci Resolve.
Open-weight models provide cost efficiency, transparency, and flexibility that closed, proprietary models lack.
Meta is making Muse Spark Open available immediately through various API platforms.
The story so far
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Original publication: 16 October 2026 01:34
