- A lawyer apologized after a court filing contained fabricated AI-generated “phantom quotations” from Anthropic’s Claude Console.
- Attorney Jason Greaves cited “tight time constraints” as the reason for using the AI platform to draft a motion related to a subpoena dispute.
- This marks another instance of AI “hallucinations” affecting legal proceedings, following a similar case in April where a law firm was sanctioned.
- The underlying case involves lawsuits challenging federal layoffs and civil service changes from the Trump administration.
Attorney Jason Greaves admitted this week that a federal court filing contained fabricated “phantom quotations” generated by Artificial Intelligence. The declaration was filed in a case connected to FEMA layoffs and disputed testimony from former Homeland Security official Joseph Guy.
Consequently, Greaves stated he used Anthropic’s Claude Console to create an initial draft under pressure. “Given the tight time constraints I used an enterprise level, data-isolated AI platform, Claude Console, to create an initial draft of the motion. That was a mistake,” he wrote. An associate attorney later claimed to have verified the citations, though two were initially incorrect.
However, the responsibility ultimately fell on the supervising partner. “As the supervising partner, and the signer of the pleading, the responsibility for having accurate citations is entirely on me,” Greaves added. He took full accountability and apologized to the court and opposing counsel for the error.
Meanwhile, this incident adds to a growing list of AI-related courtroom disputes. In April, lawyers with the firm Sullivan & Cromwell faced sanctions for submitting fake legal citations created by AI. The controversy stems from broader litigation challenging mass federal layoffs and civil service protection changes from the Trump administration.
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