Walmart is turning up the heat for the 2025 holiday shopping season with a sweeping deployment of artificial-intelligence tools across its app, stores, supply chain, and customer-service operations. It’s a bet on relatively new technology that could help it edge out rivals in a fiercely competitive retail landscape.

President Donald Trump bragged that he was delivering on affordability for Americans after Walmart shared that its annual Thanksgiving meal was cheaper than last year’s — though Internet sleuths are skeptical whether that is actually the case.