The Chicago Tribune has taken legal action against Perplexity AI, alleging that the artificial intelligence company unlawfully used its copyrighted journalism without authorization. The lawsuit highlights growing tensions between traditional media organizations and AI-powered search platforms.
Overview of the Lawsuit
In December 2025, the Chicago Tribune filed a federal lawsuit claiming that Perplexity AI copied and reused its news articles, images, and other editorial content without permission. According to the complaint, Perplexity’s AI tools generated answers for users that closely resembled, and in some cases reproduced, Tribune articles rather than simply summarizing them.
The Tribune argues that this practice allows users to consume its journalism directly through Perplexity’s platform, reducing the need to visit the Tribune’s website.
Key Allegations Made by the Chicago Tribune
1. Copyright Infringement
The Tribune alleges that Perplexity AI accessed and reused a large volume of its copyrighted material without licensing agreements or consent. The newspaper claims this goes beyond fair use and amounts to unauthorized redistribution of its work.
2. Paywall Circumvention
The lawsuit further claims that Perplexity’s technology can bypass subscription paywalls, allowing users to access premium content for free through AI-generated responses. This, the Tribune says, undermines its subscription-based revenue model.
3. Trademark and Brand Misuse
The Tribune also raises concerns that Perplexity’s AI sometimes attributes generated responses to the Chicago Tribune brand, even when the information is inaccurate. This could mislead users and harm the publication’s reputation.
4. Financial and Reputational Damage
By delivering near-complete answers drawn from Tribune reporting, the AI platform allegedly reduces website traffic, advertising revenue, and subscriber growth. The newspaper also warns that AI “hallucinations” linked to its name could damage public trust.
How Perplexity AI’s Technology Is Involved
Perplexity AI relies on a method known as retrieval-augmented generation (RAG), which pulls information from online sources to generate responses. The Tribune argues that this system effectively stores and redistributes its journalism rather than merely referencing it, raising serious legal questions about content ownership and usage rights.
Perplexity AI’s Response
Perplexity AI has stated that it does not train its core AI models using Tribune content and describes its service as an advanced search tool that indexes publicly available information. The company has also pointed to revenue-sharing agreements it has formed with some publishers, though the Tribune claims these arrangements do not apply to its content or address past usage.
Part of a Larger Industry Conflict
This lawsuit is part of a broader legal battle between media companies and AI platforms. Several major publishers have raised similar concerns, arguing that AI tools are benefiting from high-quality journalism without compensating content creators.
News organizations warn that if such practices continue unchecked, they could threaten the financial sustainability of professional journalism.
Why This Case Matters?
The outcome of the Chicago Tribune vs. Perplexity AI case could help shape future rules around how AI systems interact with copyrighted material. A ruling in favor of publishers may require AI companies to obtain licenses, share revenue, or redesign how they access online content. A ruling in favor of AI platforms could redefine fair use in the age of artificial intelligence.
About the Author
