Reddit’s lawsuit, which was filed Wednesday, accuses the Amazon-backed AI company of breaching its user agreement. “As far back as December 2021…Anthropic was already—without authorization and in direct violation of Reddit’s User Agreement—training Claude on Reddit users” posts, the lawsuit claims.

The legal filing argues that Anthropic has intentionally trained its models on the personal data of Reddit users without requesting consent. It also contends that Anthropic's 2024 claim to have restrained its content harvesting crawlers after receiving complaints was disingenuous.

Reddit started a legal fight against AI giant Anthropic over data scraping, highlighting issues of content ownership and copyright in the genAI era.