OpenAI owner ChatGPT has been sued by US authors George RR Martin and John Grisham for allegedly infringing their copyright.

As the author of A Song of Ice and Fire, Martin is best known for the HBO show Game of Thrones based on his fantasy series.

A large language model (LLM) such as ChatGPT learns by analyzing a large amount of data, often found online.

According to the lawsuit, ChatGPT was made smarter using the authors’ books without their permission.

It said it respected the rights of authors, and believed that AI should benefit them.

In addition to Jonathan Franzen and Jodi Picoult, George Saunders and Jodi Picoult are also mentioned in the complaint.

Authors Guild, a US trade group working on behalf of the named authors, has filed the case in Manhattan, New York.

OpenAI was accused of “systematic theft on a massive scale”, according to the filing.

Sarah Silverman brought similar legal action in July, while Margaret Atwood and Philip Pullman signed an open letter that same month asking AI companies to compensate them.

The OpenAI spokesperson said: “We are having productive conversations with many creators around the world, including the Authors Guild, and are working cooperatively to understand and address their concerns.”

It is our hope that we will continue to find mutually beneficial ways to work together in the future.”