Reddit is suing Anthropic for allegedly using the site’s data to train AI models without a proper licensing agreement, according to a complaint filed in a Northern California court on Wednesday. Reddit claims in the complaint that Anthropic’s unauthorized use of the site’s data for commercial purposes was unlawful, and alleges the AI startup violated Reddit’s user agreement.
Reddit’s lawsuit makes it the first Big Tech company to legally challenge an AI model provider over its training data practices, joining a litany of publishers that have sued tech companies on similar grounds.
The New York Times has sued OpenAI and Microsoft for training on its news articles without payment or permission. Meanwhile, Sarah Silverman and other book authors have sued Meta for training AI models on their books without approval. Music publishers and artists have also brought similar claims against AI audio, video, and image generation startups, alleging misuse of their content.
“We will not tolerate profit-seeking entities like Anthropic commercially exploiting Reddit content for billions of dollars without any return for redditors or respect for their privacy,” said Ben Lee, Reddit’s chief legal officer, in a statement to TechCrunch.
Notably, Reddit has inked deals with other AI model providers, including OpenAI and Google, that allow these companies to train AI models on Reddit’s data and have the site’s posts appear in their respective AI chatbots’ answers. However, in the filing, Reddit says it subjects OpenAI and Google to certain terms that protect its users’ interests and privacy.
Sam Altman, the CEO of OpenAI, has an 8.7% stake in Reddit, making him the third-largest shareholder, and was once a member of the company’s board of directors.
In the filing, Reddit claims that it approached Anthropic and made it clear that the AI startup did not have authorization to scrape or use Reddit’s content. However, Reddit alleges that Anthropic “refused to engage.”
“We disagree with Reddit’s claims and will defend ourselves vigorously,” said Anthropic spokesperson Danielle Ghighlieri in an emailed statement to TechCrunch.
Reddit claims in its complaint that Anthropic’s scraper bots ignored the social network’s robots.txt files, a standard that signals to automated systems not to crawl websites. The online community platform alleges that, after Anthropic claimed to block its bots from scraping Reddit in 2024, Anthropic’s bots continued to scrape the platform more than 100,000 times.
Reddit is asking Anthropic to pay compensatory damages, as well as restitution for the amount by which Anthropic has been enriched by scraping Reddit’s content. Reddit also requests an injunction prohibiting Anthropic from continuing to use Reddit’s content.