Two of the world’s biggest artificial intelligence firms are being sued by celebrities including Sarah Silverman. The writers claim that ChatGPT creator OpenAI and Facebook parent company Meta used their text to train their artificial intelligence systems, without permission. “Since the release of OpenAI’s ChatGPT system in March 2023, we’ve been hearing from writers, authors, and publishers who are concerned about its uncanny ability to generate text similar to that found in copyrighted textual materials, including thousands of books,” wrote Joseph Saveri and Matthew Butterick, the lawyers behind the class-action complaint. Mr Saveri and Mr Butterick have already launched legal proceedings against GitHub Copilot, an AI coding assistant, as well as Stable Diffusion, the popular AI image generator. They call the systems “industrial-strength plagiarists” on a website built to track and promote that work that also includes the complaints that have been filed in California. Last week, the two lawyers launched class-action lawsuits against OpenAI, arguing that it was remixing the “copyrighted works of thousands of book authors—and many others—without consent, compensation, or credit”. That complaint was initially launched on behalf of two authors, Paul Tremblay and Mona Awad, who have since been joined by Sarah Silverman, Chris Golden and Richard Kadrey. The lawsuit alleges that their work had been downloaded from “shadow library” websites that make it possible to download large amounts of text in bulk. They were then used to train the ChatGPT and LLaMa systems made by Meta and OpenAI, it claims. The suit shows that ChatGPT will summarise those authors’ books when prompted, infringing copyright and not giving any of the copyright information about the books, the lawyers claim. The authors “did not consent to the use of their copyrighted books as training material”, the lawsuit says. OpenAI did not respond to a request for comment from The Independent. Meta declined to comment. Read More Will.i.am hails AI technology as ‘new renaissance’ in music Instagram Threads hits 100 million users SpaceX smashes reusable rocket record as Elon Musk makes bold Starship claim