Anthropic blames Claude AI for ‘embarrassing and unintentional mistake’ in legal filing
Published on: 2025-07-06 08:18:49
Anthropic has responded to allegations that it used an AI-fabricated source in its legal battle against music publishers, saying its Claude chatbot made an “honest citation mistake.”
An erroneous citation was included in a filing submitted by Anthropic data scientist Olivia Chen on April 30th, as part of the AI company’s defense against claims that copyrighted lyrics were used to train Claude. An attorney representing Universal Music Group, ABKCO, and Concord said in a hearing that sources referenced in Chen’s filing were a “complete fabrication,” and implied they were hallucinated by Anthropic’s AI tool.
In a response filed on Thursday, Anthropic defense attorney Ivana Dukanovic said that the scrutinized source was genuine and that Claude had indeed been used to format legal citations in the document. While incorrect volume and page numbers generated by the chatbot were caught and corrected by a “manual citation check,” Anthropic admits that wording errors had gone undetected.
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