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BP, Marathon, 7-Eleven, Walmart sued for allegedly using AI to boost California gas prices

By Thomson Reuters Jun 22, 2026 | 4:13 PM

By Jonathan Stempel

June 22 (Reuters) – Gas station operators including BP, Circle K, Marathon Petroleum, 7-Eleven, Walmart and Albertsons were sued on Monday by California drivers ​who accused them of using artificial intelligence to ‌boost prices at the pump.

According to a proposed class action, the defendants violated California’s main antitrust law, the Cartwright Act, by using an AI-based tool that uses data from competing gas stations to “coordinate ‌high ​prices and wring more money from ⁠the pockets of consumers.”

The ⁠lawsuit in the Sacramento, California federal court said the scheme violated Assembly Bill 325, a California law that took effect on January 1 and was intended to ​crack down on algorithmic price fixing.

Drivers said gas prices have risen as much as 30 cents a ⁠gallon in areas where high percentages ⁠of stations use the AI tool, which ​comes from a company called Kalibrate.

Each penny costs California drivers ​an extra $134 million per year, boosting gasoline prices ‌to “astronomical” levels sometimes reaching $7 a gallon, the complaint said.

“While families struggle to afford the commute to work, defendants have conspired to put an end to competition, joining an AI-powered ⁠trust to ensure that no matter where a driver turns, the price for gasoline is artificially high,” the complaint said.

The ⁠defendants operate more ‌than 1,700 gas stations in California, according ⁠to the complaint. Kalibrate is also a ​defendant. ‌The defendants either did not immediately respond ​to requests ⁠for comment or declined to comment.

Californians pay the nation’s highest gas prices, averaging $5.58 per gallon for regular, according to AAA. The national average is $3.93.

The lawsuit seeks unspecified damages for drivers who paid too much for gasoline.

(Reporting by Jonathan Stempel ​in New York)