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The Chicago Tribune filed a lawsuit against AI search engine Perplexity on Thursday alleging copyright infringement. The suit, seen by TechCrunch, was filed in a federal court in New York.<\/p>\n
The Tribune alleges that its lawyers contacted Perplexity in mid-October asking if the AI search engine was using its content, according to the complaint. Perplexity\u2019s lawyers replied it did not train models with the Tribune\u2019s work but that it \u201cmay receive non-verbatim factual summaries,\u201d the lawsuit claims.<\/p>\n
The Tribune\u2019s lawyers, however, argue that Perplexity is delivering Tribune content verbatim. <\/p>\n
Interestingly, the newspaper\u2019s lawyers are also calling out Perplexity\u2019s retrieval augmented generation (RAG) as a culprit. RAG is a method used to limit hallucinations by having the model only use an accurate or verified data source. The Tribune argues that Perplexity is using the newspaper\u2019s content in its RAG systems, scraped without permission. Plus, it alleges the Perplexity\u2019s Comet browser is bypassing the paper\u2019s paywall to deliver detailed summaries of those articles.<\/p>\n
The Tribune is one of 17 news publications from MediaNews Group and Tribune Publishing that sued<\/a> OpenAI and Microsoft over model training material in April. That suit is ongoing. Another nine from these publishers sued<\/a> the model maker and its cloud provider in November, too.<\/p>\n While creators have filed many lawsuits<\/a> against model makers over using their work for model training, we\u2019ll have to see if the courts weigh in about the legal liabilities of RAG as well.<\/p>\n Perplexity did not immediately respond to the Chicago Tribune\u2019s story about its own lawsuit, nor to TechCrunch\u2019s request for comment. Perplexity is facing other such suits. Reddit filed one in October<\/a>. Dow Jones is also suing<\/a>. Last month, while Amazon didn\u2019t sue, it did threaten to<\/a> by sending a cease-and-desist letter over AI browser shopping.<\/p>\n Techcrunch event<\/p>\n