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B.C. lawyer reprimanded for citing fake cases invented by ChatGPT

The cases would have provided compelling precedent for a divorced dad to take his children to China — had they been real.

"As this case has unfortunately made clear, generative AI is still no substitute for the professional expertise that the justice system requires of lawyers," Masuhara wrote in a "final comment" appended to his ruling. The issue made headlines in the U.S. last year when a Manhattan lawyer begged a federal judge for mercy after filing a brief relying solely on decisions he later learned had been invented by ChatGPT. Supreme Court judge has ordered Chong Ke to pay costs for work opposing counsel undertook to figure out a pair of cases cited in an application were made up by artificial intelligence.

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