Fidji Simo said it was an "incredibly hard decision" to leave Instacart for OpenAI, where she will be CEO of applications.

Sam Altman, OpenAI’s chief executive, said he hired Instacart’s Fidji Simo to join in a new role as chief executive of ...

Fidji Simo is joining OpenAI in a new role as chief executive officer of OpenAI applications, reporting to Sam Altman, he announced on Wednesday.