Meta’s stock is enjoying its best month in 13 years thanks to the company’s hot new AI assistant

Meta Platforms is on track for its strongest monthly stock performance in 13 years, a rally tied to growing enthusiasm for Muse, the company's new AI assistant. According to the report, Muse is gaining popularity and helping convince investors that Meta's artificial-intelligence investments are translating into products users actually adopt.

The significance lies less in any single app than in what it signals about Meta's spending. The company has committed heavily to AI infrastructure, and markets have questioned when those outlays would produce visible returns. A well-received consumer assistant offers a partial answer, suggesting Meta can convert AI capability into engagement across its existing platforms rather than relying solely on future monetization.

What to watch: whether Muse's adoption holds beyond the initial novelty phase, and whether Meta discloses metrics that let investors track it. Also worth monitoring is how the company frames AI spending on its next earnings call, and whether rivals respond with competing assistants. A one-month stock move reflects sentiment as much as fundamentals, so sustained proof of user retention and eventual revenue paths will matter more than the current momentum.