Sam Altman, one of the most prominent figures in the world of artificial intelligence, is being forced out of OpenAI — the company behind the wildly popular ChatGPT chatbot he helped to create — after the board said it had lost confidence in him as a leader.

Mira Murati, an Albanian-born Dartmouth-educated engineer who helped develop some of OpenAI’s best-known products as its chief technology officer, will serve as OpenAI’s interim chief executive officer.