Microsoft co-founder Bill Gates says that OpenAI’s GPT AI model is the most revolutionary advance in technology since he first saw a modern graphical desktop environment (GUI) in 1980. Before that, people used their computers through a command line. Gates took the “GUI” technology and based Windows around it, creating a modern-day software juggernaut. Now, Gates sees parallels with OpenAI’s GPT models, which can write text that resembles human output and generate nearly usable computer code.