Reddit's content is a gold mine for teaching AI to sound human — and Reddit isn’t about to let it go for free.

Reddit is suing artificial intelligence startup Anthropic for what it’s calling a breach of contract and for engaging in “unlawful and unfair business acts” by using the social media company’s platform and data without authority.

Reddit sued the artificial intelligence company on Wednesday, claiming that it is stealing millions of user comments from platform to train its chatbot, Claude.