OpenAI is the company behind ChatGPT, GPT-4, DALL-E, Sora, and the OpenAI API. Founded in December 2015 as a non-profit research lab, it has evolved into one of the most important AI companies in the world, with annualized revenue above 4 billion US dollars and partnerships with Microsoft, Apple, SAP, Salesforce, and hundreds of thousands of enterprise customers.
Operational headquarters are at Pioneer Building, 3180 18th Street in San Francisco's Mission District, with offices in London, Dublin, Tokyo, Singapore, and Washington, DC. Its legal structure is unlike any other major AI company: OpenAI, Inc.
- a Delaware non-stock non-profit corporation - is the parent, and it controls OpenAI GP LLC, a Delaware limited liability company that serves as the general partner of OpenAI, L.P., the Delaware "capped-profit" limited partnership into which Microsoft and other investors have poured more than 13 billion US dollars.
The capped-profit cap means LP investors are entitled to returns up to a defined multiple of their investment, after which additional profits flow back to the non-profit parent and its charitable mission of building AGI for the benefit of all humanity.
OpenAI's structure is the most unusual corporate setup of any major technology company, and it is only possible because every entity in the stack is Delaware-domiciled. The top parent, OpenAI, Inc., is a Delaware non-stock non-profit corporation - no shares, no equity, just members and a board that holds ultimate control.
Non-profits cannot accept venture capital in the usual way, so in 2019 OpenAI created a two-layer capped-profit arm: OpenAI GP LLC (a Delaware LLC) is the general partner, and OpenAI, L.P. (a Delaware limited partnership) is where Microsoft's investment actually sits.
The GP LLC is 100 percent owned and controlled by the non-profit parent, which means the non-profit board governs the entire stack even though investors have put in more than 13 billion US dollars.
The "capped-profit" mechanic lives in the LP agreement: Microsoft and other investors are entitled to returns up to a stated multiple of their capital (reportedly 100x for early investors, decreasing for later rounds), and once that cap is reached any additional returns are distributed to OpenAI, Inc. to fund charitable AGI safety work. Delaware is essential to all of this.
Delaware's non-stock non-profit statute (8 Del. C. § 114) lets a non-profit own and control for-profit subsidiaries without losing its charitable status - not every state allows this. Delaware's LLC Act permits a non-profit to serve as the sole member of a for-profit LLC, and its LP Act permits unequal distribution waterfalls and contractual caps on distributions.
The November 2023 board crisis, in which the non-profit board briefly fired CEO Sam Altman before reversing course, was a live demonstration of the structure: the non-profit board had legal power under the Delaware non-profit code to remove the CEO of the capped-profit subsidiary, and Microsoft - despite its 13 billion dollar stake - had no board seat to block them.
Whether OpenAI's ongoing restructuring preserves or dilutes this control is one of the most-watched questions in Delaware corporate law.
Both, layered. OpenAI, Inc. is a Delaware non-stock non-profit corporation and is the top parent. It controls OpenAI GP LLC, a Delaware LLC, which in turn is the general partner of OpenAI, L.P., a Delaware capped-profit limited partnership.
Microsoft and other investors hold LP interests in the partnership and are entitled to returns up to a contractual cap, after which additional profits flow back to the non-profit parent to fund AGI safety research. The non-profit board governs the entire stack.
A capped-profit LP is a standard Delaware limited partnership whose LP agreement contains a distribution waterfall capping investor returns at a stated multiple of their contribution. OpenAI's cap was reportedly 100x for early investors, decreasing for later rounds.
Once an LP has received distributions equal to the cap, any further returns are redirected to a designated beneficiary, in OpenAI's case, the non-profit parent. This mechanic is entirely contractual and uses Delaware's permissive LP statute; no special license or regulatory approval is required.
Delaware is one of the few US states whose statutes smoothly accommodate non-stock non-profits, LLCs with non-profit sole members, and LPs with highly customized distribution waterfalls.
Delaware's Court of Chancery also has experience adjudicating non-profit governance disputes, which matters when your board has the legal power to fire the CEO of a subsidiary that has raised 13 billion dollars in outside capital. No other US state offers the combined flexibility and legal infrastructure OpenAI needed.
Technically yes, practically rarely. You would need IRS 501(c)(3) recognition for the non-profit, which takes 6-12 months and constrains your activities to charitable purposes. You would need experienced Delaware counsel to draft the GP LLC operating agreement and the LP agreement with the capped-profit waterfall.
And you would need to convince investors to accept capped returns, which most venture capital will reject. OpenAI's structure works because its non-profit mission (AGI for humanity) is credible and its early donor base accepted the cap; neither is easy to replicate.
