Meta and Apple, rivals for a decade over user data, worked together so Meta’s largest open model can run on two Mac Studio desktops instead of in a data center.

The deal gives Meta more users for its model and gives Apple a privacy-friendly AI story that sells its most expensive desktop.

Companies from Harvey to PNC Financial Services are already looking to cut AI bills and keep data in-house, the market both companies are now chasing.

A Meta and Apple partnership wasn’t on anyone’s 2026 bingo card. On Thursday (Oct. 15), the two companies, who spent most of a decade fighting over user data, announced they had worked together to run Meta’s newest AI model on Apple’s desktops.

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Meta released Muse Spark Open, an 816 billion-parameter model it calls the most capable U.S. open-weight model to date, and said it worked with Apple to tune the model for two Mac Studio desktops. Apple published updated software and benchmarks the same day. Meta said the model and Apple’s desktops “together” are “the best way to run a powerful model on your own desktop.”

Their relationship wasn’t always this friendly. In 2021, Apple began requiring apps on iPhones to ask permission before tracking users across other apps and websites, which cut off much of the data Meta used to target and measure ads. Meta said the change would cost it about $10 billion in 2022, CNBC reported at the time.

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