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 detente 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 opportunity in bringing powerful AI capabilities to personal computers.

"We're excited for mommy and daddy to be playing nice again," Meta AI chief Alexandr Wang told Axios.

Driving the news: Meta is releasing Muse Spark Open, a model similar to Muse Spark 1.3 that it says is the most powerful U.S.-developed open-weight AI model available.

Meta joins a host of Western AI companies that have released powerful open-weight systems that promise to slash AI costs, provide companies with more control and offer an…