AI Chatbots Favor Walmart Over Amazon, UBS Finds

Walmart wins most AI chatbot recommendations, UBS analysts found, MarketWatch reported Oct. 5, 2026. The bots — including ChatGPT and Gemini — favored Walmart and Costco over Amazon. More shoppers now ask these tools for picks. That matters for your wallet: top placement can steer which prices you see and stores you trust.