Apple and Meta, whose leaders have spent years trading barbs over privacy and the future of computing, are joining forces to bring one of America's most powerful open-weight AI models to Apple's high-end Macs.Why it matters: The collaboration marks a striking détente between two longtime Silicon Valley rivals, underscoring how the AI race is reshaping relationships across the technology industry.The companies still compete over devices and the next generation of computing, but both see an opport...