OpenAI completes restructuring: Microsoft to take 27%

OpenAI has completed the complex restructuring of its commercial business. Its for-profit arm is now called OpenAI Group Public Benefit Corporation (PBC), a U.S. public benefit corporation that will remain under the control of the OpenAI Foundation.

The deal reshapes one of the most important alliances in the AI industry. Microsoft will hold approximately 27% of OpenAI, a stake valued at around $135 billion based on the company’s current valuation, and will retain access to its technology through 2032. In return, OpenAI gains a structure far better suited to raising the enormous amounts of capital required to train and operate advanced models.

The foundation retains control

The deal does not simply turn OpenAI into a conventional company. The nonprofit entity created to oversee the organization’s mission will continue to control the new PBC and will hold nearly 26% of its equity.

The distinction matters. A public benefit corporation can have investors and pursue profits, but its directors must consider a defined public purpose alongside financial returns. In OpenAI’s case, that purpose remains tied to developing artificial general intelligence—AGI—in a way that benefits humanity as a whole.

The foundation has announced $25 billion for health and resilience initiatives. Its equity stake is the mechanism linking OpenAI’s commercial success to that philanthropic work: as the company’s value increases, the foundation would have more resources to fund its programs.

The structure is an attempt to resolve a tension that has followed OpenAI since it created its commercial subsidiary in 2019. Building frontier models requires data centers, chips and electricity on a scale that a purely nonprofit organization would struggle to finance. But the foundation wants to retain oversight of a company that, given its size, can attract the capital and competitive pressure associated with major technology companies.

Microsoft keeps the relationship but loses exclusivity

Microsoft will remain OpenAI’s central partner, although the relationship will no longer be exclusive. The Redmond-based company has secured a 27% stake and will retain access to OpenAI’s technology through 2032, including systems that may reach the AGI threshold.

That concept has been one of the most sensitive points in the deal. Until now, the possible arrival of AGI could alter Microsoft’s rights to OpenAI’s technology. The new structure provides for an independent panel of experts to verify whether a model has genuinely reached that level. It will therefore not be a unilateral decision by OpenAI or simply a marketing label.

Two rights should be distinguished. Microsoft retains access to OpenAI’s technology through 2032, but its rights to research IP—“confidential methods used in the development of models and systems”—end if AGI is verified or in 2030, whichever comes first. Those rights also no longer cover any consumer hardware OpenAI may develop.

Microsoft is also giving up its status as OpenAI’s exclusive cloud computing provider. That is a significant concession: it allows the lab to contract for capacity from other operators if needed. At the same time, OpenAI has committed to purchase an additional $250 billion in Azure services. Exclusivity is gone; OpenAI’s operational dependence on Azure, at least in the short and medium term, remains enormous.

More freedom to fund the race for advanced models

The deal removes financing restrictions that stemmed from the original 2019 partnership. Those conditions made sense when Microsoft was providing the infrastructure OpenAI could not afford on its own. Today, the cost of competing in advanced models runs into the tens of billions of dollars across chips, data centers, energy, talent and data.

The new PBC gives OpenAI a structure that is more familiar to large investors and leaves the door open to future funding rounds and even a potential IPO. That does not mean an IPO has been decided, but it removes a significant corporate barrier to considering one.

The recapitalization has also cleared review by the attorneys general of California and Delaware. Delaware’s office issued a “statement of no objection,” while California Attorney General Rob Bonta said his office would not go to court to oppose the plan after negotiating changes related to the use of charitable assets, safety and OpenAI’s continued presence in California.

A clearer structure, not an automatic solution

The reorganization clarifies who owns what, how OpenAI will be financed and what access Microsoft retains. It is a practical step for a company already operating at a scale that is difficult to fit within a hybrid structure improvised six years ago.

But the formula does not eliminate the underlying challenges. The foundation will still have to demonstrate that its control is effective as commercial interests, the need for computing capacity and investor expectations grow. The independent panel tasked with verifying AGI introduces a concrete safeguard, although its credibility will depend on its criteria, composition and actual independence.

For now, OpenAI gains room to raise more capital; Microsoft secures a privileged position in the technology it has helped advance; and the foundation formally retains control of the mission. The next test will be turning that allocation of rights into governance that works when difficult economic and technological decisions are on the table.