Meta AI Copyright Lawsuit 2026: Publishers Sue Over 267TB of Pirated Books Used to Train Llama

# Meta AI Copyright Lawsuit 2026: Publishers Sue Over 267TB of Pirated Books Used to Train Llama

> **Quick answer:** Five major publishers — Hachette, Macmillan, McGraw Hill, Elsevier, and Cengage — filed a class-action lawsuit against Meta and CEO Mark Zuckerberg on May 5, 2026, alleging the company trained its Llama AI on 267 terabytes of copyrighted books and journal articles pirated from shadow libraries. Zuckerberg allegedly personally greenlighted the strategy after Meta decided not to pay for licensing rights. Meta is arguing fair use.

*This article is for informational purposes only and does not constitute legal advice. Consult a qualified attorney for legal matters specific to your situation.*

## What Happened: Publishers Sue Meta Over Llama's Training Data

On May 5, 2026, five of the world's largest book publishers filed a sweeping class-action copyright lawsuit against Meta and founder Mark Zuckerberg in the U.S. District Court for the Southern District of New York.

The plaintiffs — Hachette, Macmillan, McGraw Hill, Elsevier, and Cengage — along with bestselling legal thriller author Scott Turow — allege that Meta committed what they describe as "one of the most massive infringements of copyrighted materials in history" to build its Llama AI models.