Encyclopedia Britannica is suing OpenAI for allegedly ‘memorizing’ its content with ChatGPT

Encyclopedia Britannica and Merriam‑Webster claim OpenAI’s ChatGPT has memorized and reproduced their copyrighted entries verbatim, filing a lawsuit that alleges unauthorized copying and traffic cannibalization. The complaint joins a wave of publisher lawsuits—including the New York Times and a $1.5 billion Anthropic settlement—highlighting growing legal pressure on AI firms over training data use.