Murdoch's Dow Jones, New York Post sue Perplexity AI for 'illegal' copying of content

Media baron Rupert Murdoch's Dow Jones and New York Post filed a lawsuit against Perplexity AI on Monday, claiming the AI startup engages in a "massive amount of illegal copying" of their copyrighted work.

The lawsuit is the latest salvo in a bitter ongoing battle between publishers and tech companies over how the latter may use copyrighted content without authorization to build and operate their AI systems.

Perplexity's search tools enable users to get instant answers to questions with sources and citations. It is powered by a variety of large language models (LLMs) that can sum up and generate information, from OpenAI to Meta's open-source model Llama. "This suit is brought by news publishers who seek redress for Perplexity's brazen scheme to compete for readers while simultaneously freeriding on the valuable content the publishers produce," read the lawsuit filed in the Southern District Of New York. Wall Street Journal parent Dow Jones and NY Post are owned by Murdoch's News Corp. Perplexity did not immediately respond to an email from Reuters seeking comment.

In the suit, the news publishers say their journalists investigate and write stories under tight deadlines and unpredictable circumstances. There is high demand for high-quality news presented in a timely, digestible format, they argue. These publications rely on the sale of advertising and subscriptions to underwrite the cost of journalism.

The news organizations allege Perplexity’s AI-generated “answer machine” has ingested its copyrighted news stories, analysis and opinion in an internal database used to generate responses to users’ queries. Its responses act as a substitute for other news and information sources – touting the fact that its answers are so reliable users can “skip the links.”

In the quest to provide answers, Dow Jones and the New York Post allege Perplexity copied "vast" quantities of its work into a database, which uses an AI technique known as retrieval-augmented generation (RAG) to provide answers to users' queries.

Perplexity formulates its responses in a way that at times reproduce the content, verbatim, the news organizations claim. The suit alleges these actions constitute an unlawful copyright infringement.

"Perplexity perpetrates an abuse of intellectual property that harms journalists, writers, publishers and News Corp," News Corp CEO Robert Thomson said in a statement.

While Perplexity has drawn the most scrutiny for its RAG practices, it is not alone among AI companies in circumventing a common web standard used by publishers to block the scraping of their content, content licensing startup TollBit told publishers over the summer.