McDonald's is rapidly expanding AI-driven dynamic pricing across its US stores, analyzing data from over 13,000 locations to adjust prices based on location and competition. This strategy has created significant price disparities, such as a 21% Big Mac price difference between nearby Fresno stores. Starting January 2026, franchise renewal will require cooperation with AI pricing advisors. This move signals a broader industry shift, with competitors like Walmart also exploring real-time algorithmic pricing. While enhancing digital monetization efficiency, the trend raises critical compliance and trust concerns regarding consumer fairness and algorithmic transparency in physical retail.