OpenAI Chief Technology Officer Mira Murati — who has been instrumental in the development of ChatGPT and the artificial intelligence image generator Dall-E — said Wednesday she is leaving the company.

Murati is the latest high-level exec to depart OpenAI in recent months. Sutskever and former safety leader Jan Leike announced their departures in May, and co-founder John Schulman said last month that he was leaving to join rival Anthropic. Meanwhile, OpenAI’s president, Greg Brockman, is on extended leave through the end of the year.