Apple and Meta Bring 816B-Parameter Muse Spark Open to High-End Macs

Apple and Meta will let developers run Meta's 816-billion-parameter Muse Spark Open locally on high-end Macs, Meta said Oct. 15, 2026. It needs at least 1 terabyte of memory and runs best on Mac Studio with the M5 Ultra chip. The text-and-image model has a 1-million-token memory span and API access.