Meta releases Muse Spark Open, an open-weight model for Macs
Meta says the model can run on two Apple M5 Ultra Mac Studios.
816Btotal parameters in the model
The short version
- Meta launched Muse Spark Open, which it calls the most capable US open-weight model to date.
- The model has 816 billion total parameters and a 1 million token context window.
- Meta says it can run on a desktop using two Apple M5 Ultra Mac Studios with the MLX framework.
- TechCrunch reports that running the model locally requires at least 1 terabyte of RAM.
Why it matters
The release gives developers a large open-weight model that can run on local hardware. Meta says the model is built for complex coding tasks and multi-step reasoning. The work with Apple also shows a major AI lab and a hardware maker collaborating on running large models on personal machines.
“runs great on new Mac Studios thanks to work with @johnternus and Apple”
What people are saying
Commenters on Hacker News welcomed the release as more open-weight work from a major lab. One said the license requires large inference providers to get a separate license from Meta, which could reduce price competition. Another asked how it compares with Muse Spark 1.3, which they had used for free through OpenCode.