AI News Today: Meta and Apple Team Up on an 816B Open Model

Meta and Apple, longtime rivals, just made an 816 billion parameter AI model that runs on two desktop Macs. DX Today AI Daily Brief - Friday, October 16, 2026 Meta releases Muse Spark Open, an 816 billion parameter open weight model built with Apple to run on two Mac Studio computers. Investors reportedly weigh a lower $1.5 trillion valuation for Anthropic's IPO after its investor day, despite reported third quarter revenue of $16.8 billion. Proofpoint agrees to buy Varonis for about $6.3 b...