Encyclopedia Britannica Sues OpenAI Over Alleged Use of Content to Train ChatGPT

AI News Hub Editorial
Senior AI Reporter
March 16, 2026
Encyclopedia Britannica Sues OpenAI Over Alleged Use of Content to Train ChatGPT

Encyclopedia Britannica and its Merriam-Webster subsidiary have filed a lawsuit against OpenAI in federal court in Manhattan, accusing the company of using their reference materials without permission to train artificial intelligence systems including ChatGPT.

The complaint, filed Friday, alleges that the Microsoft-backed AI developer copied large amounts of copyrighted material — including encyclopedia articles, dictionary entries, and other reference content — to help build its large language models. Britannica claims the practice has allowed ChatGPT to generate responses that closely resemble its own material while diverting traffic away from its websites.

According to the filing, OpenAI reproduced nearly 100,000 Britannica articles during the training process. The company argues that the chatbot can produce outputs that mirror portions of its encyclopedia entries and dictionary definitions, effectively substituting for the original reference sources.

Britannica also contends that OpenAI’s system improperly references its brand in some responses. The lawsuit says the AI sometimes cites Britannica as a source in answers that the company claims are incorrect, which the publisher argues creates confusion and harms its reputation.

The case adds to a growing wave of copyright disputes between publishers and artificial intelligence developers over how training data is collected and used. Authors, news organizations, and other content owners have filed similar claims in recent months, arguing that AI companies built their systems on copyrighted material without obtaining permission.

Britannica itself has already pursued comparable legal action in the AI space. Last year the company filed a separate lawsuit against the startup Perplexity AI, which is still pending.

OpenAI and other AI developers have maintained that training models on large collections of publicly available text qualifies as fair use, arguing that the technology transforms existing material into new outputs rather than reproducing it directly.

In its complaint, Britannica is seeking monetary damages as well as a court order that would prevent the alleged use of its content in AI systems.

Representatives for both Britannica and OpenAI did not immediately respond to requests for comment.

This analysis is based on reporting from Investing.com UK.

Image courtesy of Yahoo News.

This article was generated with AI assistance and reviewed for accuracy and quality.

Last updated: March 16, 2026

About this article: This article was generated with AI assistance and reviewed by our editorial team to ensure it follows our editorial standards for accuracy and independence. We maintain strict fact-checking protocols and cite all sources.

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