Warren presses McDonald's CEO over AI pricing tools

Sen. Elizabeth Warren and four House Democrats have written to McDonald's CEO Chris Kempczinski to question the chain's use of algorithmic pricing tools. The lawmakers shared the letter with Reuters, and they asked for a response by November 16.

This isn't a deal or a ruling. It's an oversight letter, which carries no legal force on its own.

The letter's questions

Dated November 2, the letter cites a Reuters story from September 29. That story found McDonald's uses machine learning to generate what it calls "optimal price" recommendations for each menu item at each restaurant, based partly on an estimate of what each store's typical customers will pay.

The wording is pointed. The lawmakers wrote that they're concerned McDonald's may be using AI "to squeeze consumers into paying higher prices", and that the tools may make collusion easier between franchisees who should be competitors. Warren signed with Democratic Reps. Greg Casar, Becca Balint, Jesus Garcia and Mary Gay Scanlon.

They also asked specific questions. These include whether the tools use individual data from the McDonald's loyalty program, how franchisees might be encouraged to use them, and what antitrust review happened before deployment.

McDonald's position

The company disputes the framing. Its line since the first lawsuit has been "AI does not set the price of a Big Mac or any other menu item". It says franchisees make their own pricing decisions and that pricing recommendation tools are widespread. It has also called its tools "not a mandate", and said they don't base recommendations on individual customers. McDonald's didn't respond to a request for comment on the letter itself.

The lawsuits behind it

Congress isn't the only pressure. Two consumer class actions have been filed in federal court in recent weeks, alleging McDonald's illegally coordinates menu prices across franchisees and company-owned restaurants through a centralized algorithmic system.

One, filed in Chicago by an Illinois resident who wants to represent potentially millions of customers, argues that franchisees using a central algorithm and shared nonpublic data aren't really setting prices independently. It also alleges the centralized system has run since at least 2019. There's been no ruling on class certification or liability, so none of this is proven.

Who pays, who gains

Nobody has shown yet that customers are paying more because of the tool. That's the open question, and it's what the loyalty-data and antitrust questions are probing.

Franchisees are the group to watch. Three of them told Reuters the engine's recommendations have widened price differences between nearby restaurants. That fits the lawmakers' worry about customers, though it's a different effect from the one the lawsuits describe, which is coordination. I'd say the two claims pull in slightly different directions, and McDonald's will probably try to use that.

The scale matters too. Reuters reported the engine analyzes millions of daily transactions across nearly 14,000 restaurants. A recommendation tool at that size can look a lot like a shared pricing rule, whatever the company calls it.

The stakes for the AI market

The core legal fight is about whether "recommending" and "setting" prices are really different when a central system supplies the number. Courts haven't settled that for AI tools in restaurants, and the McDonald's case sits alongside class actions over algorithmic pricing in hotels, apartments and other consumer sectors.

Honestly, I think this is the real story for anyone selling pricing software. A letter from five Democrats won't change the law. But if the chain with the biggest footprint has to explain its antitrust review in writing, smaller vendors and their customers will likely ask for the same paperwork.

The next date to watch

November 16 is when the lawmakers want answers. McDonald's has no obligation to respond publicly, and I'd guess any reply repeats its franchisee-independence argument. The lawsuits will move more slowly. If I were a franchisee or a pricing-tool buyer, I'd wait for the first court ruling on whether these claims survive a motion to dismiss before drawing conclusions.