Meta's Muse Spark Open Puts an 816-Billion-Parameter Model on Two Macs
Meta released Muse Spark Open on Thursday, October 15, calling it the most capable United States open-weight model to date. That is a vendor claim, and independent testing will settle it, but the release itself is the news: after focusing on its closed Muse Wonder models earlier this week, Meta has put a frontier-scale model into downloadable weights that developers can host, inspect, and adapt outside Meta's own service.