OpenAI is owned by OpenAI, Inc., which is a non-profit organization registered in Delaware. It also has a for-profit subsidiary corporation called OpenAI Global, LLC. The organization was founded in December 2015 by Ilya Sutskever, Greg Brockman, Trevor Blackwell, Vicki Cheung, Andrej Karpathy, Durk Kingma, Jessica Livingston, John Schulman, Pamela Vagata, and Wojciech Zaremba, with Sam Altman and Elon Musk serving as the initial board members. Microsoft provided OpenAI Global LLC with a $1 billion investment in 2019 and a $10 billion investment in 2023.
Source: Wikipedia