Reddit filed a lawsuit against AI startup Anthropic on Wednesday, alleging that the $61.5 billion startup used its site as training grounds for AI models without permission. Anthropic has allegedly been training its AI models on posts made by Reddit users without their consent. In July 2024, Reddit CEO Steve Huffman called out Anthropic, Microsoft, and Perplexity for unauthorizedly scraping the site for training data, and an Anthropic spokesperson assured Reddit that it had stopped. Photo by FREDERIC J. BROWN/AFP via Getty ImagesOther companies are using Reddit data for AI training, but only after signing formal agreements with the company. Reddit struck a $60 million licensing deal with Google in February 2024, which allowed Google to train its Gemini AI on Reddit data.