tech
December 5, 2025
Chicago Tribune sues Perplexity
The newspaper is alleging copyright infringement and calling out Perplexity's Retrieval Augmented Generation (RAG) as a culprit.
TL;DR
- Chicago Tribune filed a lawsuit against AI search engine Perplexity for copyright infringement.
- The suit alleges Perplexity uses Tribune content verbatim, contrary to claims of only providing factual summaries.
- Tribune's lawyers point to Perplexity's RAG systems and Comet browser as means of unauthorized content use and paywall bypassing.
- This follows previous lawsuits by Tribune Publishing and MediaNews Group against OpenAI and Microsoft.
- Perplexity is also facing lawsuits from Reddit and Dow Jones, and received a cease and desist from Amazon.
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