Meta’s AI Model ‘Memorized’ Huge Chunks of Books, Including ‘Harry Potter’ and ‘1984’

Photo credit: Mabel Amber via Pexels. Article by Rosie Thomas. 404 Media – June 23, 2025. Research paper: https://arxiv.org/pdf/2505.12546.

A new paper from researchers at Stanford, Cornell, and West Virginia University seems to show that one version of Meta’s flagship AI model, Llama 3.1, has memorized almost the whole of the first Harry Potter book. This finding could have far-reaching copyright implications for the AI industry and impact authors and creatives who are already part of class-action lawsuits against Meta. […]

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