McDonald's faces a proposed class action lawsuit alleging that a shared AI pricing engine pooled nonpublic franchise sales data and raised menu prices. The complaint accuses McDonald's USA and McDonald's Corporation of antitrust violations. The complaint says the tool uses transaction data from about 14,000 US restaurants to recommend prices for items such as Big Macs. McDonald's denies the claim and says franchisees make their own pricing decisions, Reuters reported. McDonald's says AI does not set prices for any menu item.