Major Corporate Backers of OpenAI
Microsoft has been the most prominent corporate investor in OpenAI, committing billions of dollars in multiple rounds since 2019. The partnership began with a $1 billion investment in 2019 and expanded significantly with a reported $10 billion commitment in 2023, giving Microsoft a substantial stake in the company. This investment is detailed on Microsoft's official blog and various financial reports. Read more about Microsoft's investment.
Other major technology companies have also participated in OpenAI's funding, though Microsoft remains the dominant corporate backer. Nvidia, the leading AI chip manufacturer, has been closely associated with OpenAI through both investment and technology partnerships. Amazon Web Services has also been involved as a cloud infrastructure partner and investor, providing computing resources and strategic funding. Explore OpenAI's investor landscape on Forbes.
OpenAI's Funding Rounds and Valuation
OpenAI's most recent funding round was a tender offer in early 2024 that valued the company at approximately $80 billion to $90 billion, making it one of the most valuable private technology companies in the world. This round allowed employees and early investors to sell shares, providing liquidity while maintaining the company's private status. The valuation reflects the rapid growth of generative AI and OpenAI's market-leading position with ChatGPT.
Prior to the 2024 tender offer, OpenAI raised $10 billion from Microsoft in 2023 and completed a $300 million funding round in 2023 at a $29 billion valuation. The company has also received investments from Thrive Capital, Sequoia Capital, and Andreessen Horowitz, among others. These funding rounds have fueled OpenAI's research and infrastructure development at an unprecedented scale.
Individual Investors and Strategic Partners
High-profile individuals have also backed OpenAI, including Reid Hoffman, co-founder of LinkedIn, who was an early supporter through his investment firm Greylock Partners. Elon Musk was an initial co-founder and donor but left the board in 2018 to avoid conflicts with his work at Tesla and SpaceX, though he has commented publicly on the company's direction.
Strategic partners like Amazon and Google have engaged with OpenAI through cloud services and research collaborations, though neither has taken a direct equity stake comparable to Microsoft's. The company's structure as a capped-profit subsidiary of the non-profit OpenAI Inc. allows it to attract diverse investment while maintaining its mission-focused charter. View OpenAI filings on the SEC website.