McDonald's built a 515-page dossier on one customer to calculate the maximum he would pay before he even ordered.
That same AI system is now at the center of a federal price-fixing lawsuit.
How McDonald's made 14,000 franchises charge what the algorithm wanted is the part that gets them in trouble – and the part Walmart, Kroger, and Wendy's are watching from the sidelines.
The 515-Page Customer File McDonald's Used to Calculate Your Price
In August, WIRED reporter Reece Rogers requested every piece of data McDonald's had collected on him through California's privacy law.
McDonald's sent 515 pages.
The company had logged every visit, every order, his loyalty points, his Monopoly codes, and a "customer attrition likelihood" score listed as zero.
McDonald's believed he was never leaving.
Rogers' own file projected 2.16 visits in the next six weeks, $13.49 per trip, $29.15 total – all of it calculated before he had placed a single order.
It ranked a Large Diet Coke as the product "most relevant" to him.
McDonald's wasn't just remembering what you ordered.
It was building a profile of exactly how much you'd pay before you pulled into the drive-thru.
How McDonald's AI Pricing Tool Became a Federal Price-Fixing Case
Illinois customer Michael Thomas filed a federal antitrust lawsuit in Chicago last week alleging McDonald's used the same system to fix prices across nearly 14,000 U.S. restaurants.
The Tiger Analytics pricing engine mines nonpublic sales records from competing franchises to calculate exactly how much each location's customers will pay.
It also ties one location's price increases to whether nearby McDonald's restaurants have already raised prices on the same item – coordinated pricing across locations that are supposed to be competing.
Plaintiff's attorney Lark Turner called it directly: McDonald's is "leveraging its troves of data and its franchised system to nickel-and-dime consumers down to the last French fry."
McDonald's denied everything.
"AI does not set menu prices at McDonald's restaurants – McDonald's franchisees do," the company said.
The CEO's own earnings call contradicts that.
McDonald's CEO Chris Kempczinski told shareholders on an August 4th earnings call that the company pressures franchisees who don't follow the pricing recommendations.
He said it himself.
The RealPage Price-Fixing Case That Already Wrote the Antitrust Playbook
The DOJ sued real estate software company RealPage for the exact same structure.
RealPage collected nonpublic rental data from competing landlords, ran it through pricing software, and told every client the highest rent their market would bear.
Landlords who used it never had to meet in a back room.
The software did the coordinating for them.
One landlord testified under oath: "I always liked this product because your algorithm uses proprietary data from other subscribers to suggest rent and term. That's classic price fixing."
The RealPage case settled one question: feed a system your competitors' private data, follow its output, and you are liable – it does not matter whether a human or a machine made the call.
McDonald's runs the same structure – nonpublic franchise data into a shared pricing engine, output that ties price decisions across locations that legally shouldn't be coordinating.
The RealPage precedent says that's enough.
While McDonald's fights this lawsuit, Walmart is rolling out digital shelf labels to more than 2,300 of its U.S. stores by the end of this year.
The technology replaces paper tags with digital screens controlled from a central system.
Walmart can change any price in any store in two minutes.
Kroger already has digital tags in roughly 500 locations and quietly hired a tech company specializing in surge pricing to handle its market analytics in 2024.
Wendy's CEO announced dynamic pricing plans on an earnings call in February 2024, got immediate backlash, and walked it back within days – but not before saying it on the record, the same sequence McDonald's followed.
Walmart's digital tags execute that same logic on eggs, milk, and ground beef – adjusting price by the time of day, the weather, or your purchase history.
During Biden's inflation crisis, when working Americans were getting crushed at the grocery store, McDonald's pricing software was quietly calculating the maximum it could extract from every drive-thru in the country.
McDonald's launched a $5 value meal to stop hemorrhaging customers, then kept the software running.
If this lawsuit fails, every retailer in America just received a legal blueprint for doing the same thing to everything in your cart.
Walmart already has the price tags to take it there.
Sources:
- Dylan Kresak, "Golden Arches Used AI To Nickel-And-Dime Customers 'Down To The Last French Fry,' Suing Attorney Claims," Daily Caller News Foundation, October 6, 2026.
- Reece Rogers, "I Asked McDonald's for My Data. I Got a 515-Page File That Knows Me Better Than I Know Myself," WIRED, August 2026.
- Associated Press, "McDonald's sued over AI tool that recommends prices to US franchisees," October 8, 2026.
- Bloomberg Law, "RealPage Antitrust Case Poses AI Price-Setting Collusion Test," Bloomberg Law.
- "Democrats accuse Kroger of using digital price tags to gouge consumers," Supermarket News.
- "Digital Price Tags Are Coming To A Walmart Near You," Black Enterprise, March 26, 2026.
- "Wendy's faces backlash after 'surge pricing' reports, denies claims," Fox News, February 28, 2024.
