The woman behind Instacart’s successful IPO, Fidji Simo, is joining OpenAI’s C-suite. On Wednesday, OpenAI CEO Sam Altman announced Simo’s new role as CEO of applications. She will report directly to him after transitioning out of her current role at Instacart later this year.

Simo, already a board member at OpenAI, will transition out of Instacart over the next few months and join the AI company full-time as Application CEO.

Instacart head Fidji Simo will step down to join OpenAI as its chief of applications, CEO and co-founder Sam Altman said on Thursday, adding she will report to him and that he will remain head of the Microsoft-backed ChatGPT maker.