 The nonprofit that runs the magazine Mother Jones and the investigative podcast Reveal says OpenAI has built a business on the exploitation of copyrighted works. It joins legal challenges filed by the New York Times, bestselling authors and others, alleging that OpenAI has trained its AI systems by effectively engaging in mass theft. OpenAI counters that its guzzling up of data from all corners of the Internet is protected by what's known as fair use law. Whether AI companies' data practices are protected by fair use is unsettled in the courts.