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Encyclopedia Britannica Sues OpenAI Over Copyright, Alleges ChatGPT Erodes Human Knowledge

Encyclopedia Britannica Sues OpenAI Over Copyright, Alleges ChatGPT Erodes Human Knowledge

June 26, 2026
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Encyclopedia Britannica Sues OpenAI Over Copyright, Alleges ChatGPT Erodes Human Knowledge

As large AI models surge forward, the copyright noose is tightening.

According to recent reports, one of the world’s most authoritative reference publishers, Encyclopedia Britannica, and its subsidiary Merriam-Webster, have formally filed a lawsuit against OpenAI in the U.S. District Court for the Southern District of New York.

The complaint alleges that OpenAI, backed by substantial investment from Microsoft, improperly used its online articles, encyclopedia entries, and dictionary entries to train its flagship AI, ChatGPT. Encyclopedia Britannica contends that ChatGPT, which generates summaries based on their professional content, is effectively devouring traffic that would otherwise go to the encyclopedia’s official website.

This is not OpenAI’s first copyright dispute, but the involvement of Encyclopedia Britannica—a landmark of human knowledge—carries significant symbolic weight. For AI models, deeply edited, highly reliable data like theirs is considered golden fuel for training. Yet for copyright holders, if AI can deliver answers directly in a chat window, who would bother to click through to the source site?

In this clash between data feeding and copyright protection, legal boundaries are being redefined. When the world’s oldest encyclopedia takes on the most cutting-edge AI giant, the lawsuit’s outcome could directly shape the cost and limits of knowledge acquisition for future artificial intelligence.

While the copyright controversy intensifies, the hardware market also has fresh news: Apple Inc. announced the launch of AirPods Max2.

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