A California attorney must pay a $10,000 fine for filing a state court appeal full of fake quotations generated by the artificial intelligence tool ChatGPT. It also noted that numerous out-of-state and federal courts have confronted attorneys for citing fake legal authority. He tracks instances of attorneys citing fake cases, primarily in Australia, Canada, the United States, and the United Kingdom. When he started tracking court filings involving AI and fake cases earlier this year, he encountered a few cases a month. In recent weeks, she’s documented three instances of judges citing fake legal authority in their decisions.