Overview
OpenAI originally wasn't even a company — it was a non-profit organization funded by a group of Silicon Valley figures. Among its founders were Elon Musk (Tesla), Peter Thiel (PayPal), and the later CEO Sam Altman. The organization was headquartered in San Francisco. Their goal at the time was highly idealistic: to research "Artificial General Intelligence" (AGI) — an AI system capable of learning a wide range of skills like a human — while ensuring the technology wouldn't be monopolized by any single company, but rather benefit all of humanity.In its early days, OpenAI operated in a low-key manner, relying on donations and openly releasing numerous AI algorithms for free. Eventually, Elon Musk withdrew from the organization, reportedly due to disagreements over commercialization. However, this did not alter its public-benefit mission. Instead, it led to the release of the "OpenAI Charter," which explicitly states that "AI development must serve the public interest." Looking back at this period, it's fair to call OpenAI the "public-benefit AI lab."
From "non-profit" to "for-profit" — becoming a unique "public benefit corporation"
The real turning point came in 2019 when OpenAI restructured: it established a for-profit company under the non-profit foundation. This move sparked considerable controversy at the time — after all, the organization had promised to remain "public-benefit" — so why the sudden shift toward profitability? It later became clear that AI research was simply too expensive: training a single large model could cost tens of millions of dollars, and donations alone were nowhere near enough to sustain it.
By October 2025, OpenAI had completed another major restructuring, adopting a structure where a "non-profit foundation" controls a "for-profit company." In simple terms, the "OpenAI Foundation" acts as an overseer, holding 26% equity and ensuring that AI development stays on track. The operating entity, "OpenAI Group," is the revenue-generating arm, capable of raising funds and selling services — but legally required to balance commercial interests with public welfare. It must also publish a public-benefit report every two years. This corporate structure, known as a "Public Benefit Corporation" (PBC), is quite rare in the tech world — it's a bit like "earning a living while staying true to your original mission."
Why do people often confuse OpenAI with Microsoft? Because Microsoft is OpenAI's closest financial backer and strategic partner. As early as 2019, Microsoft invested $1 billion, followed by another $10 billion in 2023. Microsoft currently holds a 27% stake in OpenAI Group, with the company's valuation having soared to $135 billion. However, Microsoft is only a "major shareholder" — it doesn't have control. The Foundation remains the ultimate decision-maker, with the authority to appoint company directors.
Their partnership is notably practical: Microsoft provides OpenAI with Azure cloud computing resources (which are essential for AI training) and has exclusive rights to use OpenAI's AI technology until 2032. OpenAI, in turn, leverages Microsoft's distribution channels to sell its services — for instance, the AI writing features in Microsoft Word and the AI search in Bing are both powered by OpenAI's technology. Nonetheless, the two are not locked into an exclusive relationship: OpenAI is free to collaborate with other companies, and Microsoft can continue its own AGI research.
