In December 2024, the Illinois Supreme Court issued guidance on the use of AI (guidance) by judges and other lawyers.

The guidance comes after several high-profile instances of misuse of generative Artificial Intelligence (AI) in litigation, including cases where lawyers used AI to draft briefs that later cited non-existent case law. For instance, in several cases, lawyers used generative AI to write a brief and file it with a court, only to discover afterward that the AI “hallucinated” caselaw that does not exist. See, e.g., Gauthier v. Goodyear Tire & Rubber Co., No. 1:23-CV-281, 2024 WL 4882651, at *3 (E.D.
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