Reddit sued Anthropic, an AI startup backed by Amazon and Alphabet, in San Francisco Superior Court, accusing it of illegally scraping Reddit’s data to train its Claude chatbot. As reported by Reuters, the Reddit Anthropic lawsuit marks the latest clash over AI firms’ unauthorised use of third-party content.
Reddit alleges that Anthropic accessed its content more than 100,000 times, violating user policies, even after assurances in July 2024 that its bots would be blocked. The complaint emphasises Anthropic’s refusal to enter into a licensing agreement, unlike Google and OpenAI, and includes an admission from Claude regarding training on Reddit data. According to Reddit, Anthropic’s actions have enriched the company by “tens of billions of dollars.”
Reddit is suing AI startup ‘Anthropic’ for allegedly training their model on personal user data without consent
via WSJ pic.twitter.com/mO4nbf6a2D
— Dexerto (@Dexerto) June 4, 2025Anthropic, whose Claude Opus 4 and Sonnet 4 models launched on May 22, 2025, denied the claims, stating, “We disagree with Reddit’s claims and will defend ourselves vigorously,” per CNBC. According to The Wall Street Journal, Anthropic faces scrutiny with $3 billion in annualised revenue as Reddit seeks restitution, punitive damages, and an injunction.
The AI data theft issue echoes lawsuits against other AI firms, as Reddit emphasises an “open internet” with “clear limitations” on content use, per Chief Legal Officer Ben Lee’s statement in Forbes. The controversy surrounding Claude AI training highlights tensions related to Anthropic in San Francisco, especially given its proximity to Reddit. The claim regarding Reddit user policy violations could significantly alter practices concerning AI content.
The Reddit lawsuit against Anthropic underscores the rising conflict over the alleged data theft used to train AI models like Claude. As Reddit stands firm on its user policy, this case can potentially establish important precedents for AI ethics and content licensing. It draws significant global attention to the Anthropic case in San Francisco and its implications for technological innovation in 2025.
