It was the slap heard around the legal world when a Manhattan judge fined two lawyers $5,000 for giving him a legal brief full of fictional cases and citations, courtesy of ChatGPT. He further humbled the attorneys by ordering them to send copies of his opinions to the very real judges whose names made it into the filing. But while U.S. District Judge Kevin Castel said the incident "promotes cynicism about the legal profession," he also noted there's "nothing inherently improper about using a reliable artificial intelligence tool for assistance."