Real talk, McDonald's is facing a federal lawsuit in Chicago that alleges the fast-food giant is using an AI-powered pricing system to illegally fix menu prices across its nearly 14,000 locations nationwide. The proposed class-action suit, filed Friday, claims McDonald's violated US antitrust law by conspiring with its independent franchisees to fix prices using algorithms trained on secret data.

This whole drama kicked off after a Reuters report revealed that McDonald's pricing engine uses machine-learning algorithms to constantly analyze data from millions of daily transactions. The lawsuit even cited this report, noting that other fast-food companies are also hopping on the AI trend for pricing and operations.

"Independent businesses must set their prices independently," the lawsuit states, which is a pretty major accusation. The plaintiff, an Illinois resident, wants to represent potentially millions of McDonald's customers nationwide.

McDonald's, however, is pushing back. In a statement Monday, the company called the allegations "speculative and uninformed." They clarified that "AI does not set the price of a Big Mac or any other menu item," adding that franchisees actually make their own pricing decisions and that using pricing recommendation tools is common across many industries.

This isn't the first time algorithms and AI have been accused of illegal price coordination. In recent years, US plaintiffs have filed similar class actions against companies using AI for pricing in hotel rooms, apartment rentals, and other goods. Lark Turner, a lawyer for the plaintiff in the McDonald's case, said the company is "leveraging its troves of data and its franchised system to nickel-and-dime consumers down to the last French fry."

Why it matters

If these allegations are true, it means that your go-to fast-food order might be costing you more than it should because of a coordinated AI strategy, not just supply and demand. It also raises big questions about how AI is being used in the pricing strategies of major corporations and whether it's fair to consumers.