AdvertisementSKIP ADVERTISEMENTYou have been granted access, use your keyboard to continue reading.Sam Altman, OpenAI’s chief executive, said he hired Instacart’s Fidji Simo to join in a new role as chief executive of applications.Fidji Simo, Instacart’s chief executive, is joining OpenAI as chief executive of applications. Credit...Stuart Isett/Fortune/Shutterstock May 8, 2025, 1:53 a.m. ETSign up for the On Tech newsletter.   Get our best tech reporting from the week. OpenAI said late Wednesda...