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.

The lawsuit, filed on Wednesday, claims that Anthropic has been training its models on the personal data of Reddit users without obtaining their consent. Reddit alleges that it has been harmed by the unauthorized commercial use of its content.

“For its part, despite what its marketing material says, Anthropic does not care about Reddit’s rules or users: it believes it is entitled to take whatever content it wants and use that content however it desires,
with impunity,” the filing said.

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