Analyzing the Statistical Prevalence of Lawyers Snagged by AI Hallucinations in Court Filings

Lawyers have increasingly used generative AI to draft court filings, sometimes producing fictitious legal citations due to AI hallucinations.

There are about 1.37 million lawyers in the U.S., and reports of AI-generated fake citations have appeared frequently in legal media.

Courts initially gave mild reprimands for AI-caused errors but have begun imposing monetary sanctions as the incidents rise.

Common LLMs implicated include ChatGPT, Claude, Grok, Gemini, CoPilot, and Llama, and judges are becoming less tolerant of citing AI mistakes.