A group of authors is suing artificial intelligence startup Anthropic, alleging it committed “large-scale theft” in training its popular chatbot Claude on pirated copies of copyrighted books.

While similar lawsuits have piled up for more than a year against competitor OpenAI, maker of ChatGPT, the lawsuit filed Monday in a federal court in San Francisco is the first from writers to target Anthropic and its Claude chatbot.

The smaller San Francisco-based company — founded by ex-OpenAI leaders — has marketed itself as the more responsible and safety-focused developer of generative AI models that can compose emails and summarize documents. Anthropic didn’t immediately respond to a request for comment. — Associated Press