OpenAI

OpenAI is not owned by a single entity, but rather operates under a complex hybrid structure. As of late 2025, it is controlled by the non-profit OpenAI Foundation (holding ~26-30%), while Microsoft holds a major stake (approx. 27-49%). Employees and other investors like Thrive Capital and Khosla Ventures hold the remaining equity. 

Key Details on Ownership & Structure:

• Non-Profit Control: The OpenAI Foundation (parent company) governs the for-profit, capped-profit subsidiary (OpenAI LP) to ensure the mission of safe AI development is prioritized over pure profit.

• Microsoft's Role: Microsoft has invested over $13 billion in total. While some reports indicate they hold 49% of the profit-sharing, other 2025 reports indicate a ~27-30% direct equity stake following company restructuring.

• Structure: OpenAI restructured into a for-profit "Group PBC" (Public Benefit Corporation) to allow for greater investment while keeping the non-profit as a majority stakeholder of the company's direction.

• Employee & Investor Ownership: A large portion of the company (roughly 30–47% depending on the report) is held by employees and various venture capital firms.