TL;DRSullivan & Cromwell faced sanctions risk after a Manhattan bankruptcy-court filing contained AI-generated bogus citations. On Apr 26, 2026, Andrew Dietderich, cohead of S&C's restructuring group, apol
Sullivan & Cromwell faced sanctions risk after a Manhattan bankruptcy-court filing contained AI-generated bogus citations. On Apr 26, 2026, Andrew Dietderich, cohead of S&C's restructuring group, apologized to Judge Martin Glenn after Boies Schiller Flexner flagged errors including misquoted U.S. bankruptcy code, misidentified cases, and non-existent decisions. A corrected filing was later submitted; the firm cited 'rigorous' AI-use policies and immediate remedial measures, and indicated plans for further review. Sources say S&C has an enterprise license for OpenAI's ChatGPT, though the specific models were not disclosed. The incident adds to a pattern of AI hallucination risks in law, with sanctions discussions and prior embarrassments at Morgan & Morgan and Cozen O'Connor highlighting go