Coinbase AI hallucinates World Cup result on Kalshi-powered prediction market
Coinbase's AI system generated a false World Cup match result before the game began, sending traders an automated alert that Norway had beaten Brazil. The incident occurred on Coinbase's prediction market platform, which it launched in partnership with Kalshi in January. The false claim surfaced during a period of high trader activity in World Cup markets. No source details how the error was resolved or whether any trades settled on the hallucinated outcome.
A single bad AI alert can force settlement on a false outcome before human traders spot the error. For Kalshi, which is pitching professional trading interfaces and a $40 billion valuation, this is exactly the liability that scares institutional market makers. The $45 billion World Cup volume on Kalshi and Polymarket this month means even a minutes-long hallucination could move serious size.
Traders who clicked the alert and placed orders have a clear damages claim. State attorneys general in Illinois and elsewhere already argue event contracts are gambling; a proven settlement failure gives them concrete evidence. Kalshi needs to show its data pipeline has human verification gates, or it risks the regulatory stability that justifies its infrastructure spend.