AI Firms’ Training Arguments Get a Lifeline From EU Privacy Case

The EU’s highest court and a key regulator this month left the door open—at least a crack—for artificial intelligence companies that want to train their models on Europeans’ personal data without seeking consent from each individual.

Courts and regulators still must address trickier questions about the legality of AI training, including exactly when an individual needs to understand how their information is being used to train a model, attorneys said.

An Oct. 4 decision from the Court of Justice of the European Union and guidance from the European Data Protection Board four days later confirm that a ...