Lawsuit: Reddit caught Perplexity “red-handed” stealing data from Google results

In a lawsuit filed on Wednesday, Reddit accused an AI search engine, Perplexity, of conspiring with several companies to illegally scrape Reddit content from Google search results, allegedly dodging anti-scraping methods that require substantial investments from both Google and Reddit.

Reddit alleged that Perplexity feeds off Reddit and Google, claiming to be “the world’s first answer engine” but really doing “nothing groundbreaking.”

“Its answer engine simply uses a different company’s” large language model “to parse through a massive number of Google search results to see if it can answer a user’s question based on those results,” the lawsuit said. “But Perplexity can only run its ‘answer engine’ by wrongfully accessing and scraping Reddit content appearing in Google’s own search results from Google’s own search engine.”

Likening companies involved in the alleged conspiracy to “bank robbers,” Reddit claimed it caught Perplexity “red-handed” stealing content that its “answer engine” should not have had access to.

Baiting Perplexity with “the digital equivalent of marked bills,” Reddit tested out posting content that could only be found in Google search engine results pages (SERPs) and “within hours, queries to Perplexity’s ‘answer engine’ produced the contents of that test post.”

“The only way that Perplexity could have obtained that Reddit content and then used it in its ‘answer engine’ is if it and/or its Co-Defendants scraped Google SERPs for that Reddit content and Perplexity then quickly incorporated that data into its answer engine,” Reddit’s lawsuit said.

In a Reddit post, Perplexity denied any wrongdoing, describing its answer engine as summarizing Reddit discussions and citing Reddit threads in answers, just like anyone who shares links or posts on Reddit might do. Perplexity suggested that Reddit was attacking the open Internet by trying to extort licensing fees for Reddit content, despite knowing that Perplexity doesn’t train foundational models. Reddit’s endgame, Perplexity alleged, was to use the Perplexity lawsuit as a “show of force in Reddit’s training data negotiations with Google and OpenAI.”