Meta shares climbed after the company's latest results showed its core advertising business continuing to deliver strong growth. But the bigger driver of investor enthusiasm, according to coverage of the results, was Muse, Meta's new personal-assistant product, which some investors believe could become a business large enough to rival advertising in scale.

The reaction suggests markets are starting to price Meta less as a pure ad company and more as a platform with multiple emerging revenue lines. That shift matters because it changes how the stock gets valued relative to peers still seen as single-business companies.

What is still unclear is how quickly Muse can generate meaningful revenue, and whether early investor enthusiasm is ahead of actual product traction.