Fidji Simo, a French technology executive known for her work at Facebook and Instacart, has been appointed to lead ChatGPT at OpenAI. She will start her new role later this year and will report to OpenAI CEO Sam Altman, who remains head of the company. Simo is recognized for building Facebook's mobile advertising business and scaling Instacart's advertising platform into a core revenue driver. Her hiring comes shortly after OpenAI announced it is abandoning plans to become a for-profit company. The move reflects OpenAI's focus on expanding its business operations, particularly in advertising. Sam Altman had been seeking an experienced executive to manage day-to-day business activities, indicating a potential long-term leadership vision that could see Simo's role grow further. Simo's appointment is seen as a key development for OpenAI during a critical phase of the company's evolution.