Mata v. Avianca | AI Hallucination Legal Case
A New York federal judge sanctioned attorneys from Mata v. Avianca after they cited six entirely fictitious ChatGPT-generated cases in a court filing — and then doubled down when challenged. The 2023 ruling by Judge Castel is the defining global precedent on AI hallucinations in legal practice, imposing financial penalties and requiring corrective filings from all counsel involved.
