Microsoft Projected $92B Return From $13B OpenAI Investment

Microsoft internally projected a $92 billion return on its cumulative $13 billion investment in OpenAI, according to planning documents disclosed during CEO Satya Nadella’s testimony in federal court in Oakland, California, on Monday, as reported by Bloomberg. The figure appeared in a January 2023 memo from Microsoft President Brad Smith to the company’s board, which outlined expected financial returns from the partnership with the AI research lab.

Courtroom Testimony and Investment Timeline

Nadella was testifying as a witness in the Musk v. Altman lawsuit, in which Elon Musk has sued OpenAI and Microsoft in federal court. During cross-examination by Musk’s lead attorney, Steven Molo, the Microsoft CEO was walked through the Smith memo and asked about the projected returns.

“It has worked out well because we took the risk,” Nadella told the jury, according to Bloomberg’s courtroom coverage. Microsoft’s investment timeline in OpenAI began with $1 billion in 2019, followed by a doubling in 2021 and a major $10 billion commitment in early 2023. The January 2023 memo projected the $92 billion return, assuming roughly 20% annual growth after 2025 and a rapid doubling of revenues within four years.

Current Valuations Exceed Original Projections

By current valuations, those projections may already be conservative. OpenAI’s most recent funding round in March 2026 valued the company at $852 billion, placing Microsoft’s roughly 27% stake at an estimated $220 to $230 billion, representing approximately 17 to 18 times the original $13 billion investment.

The courtroom disclosures also revealed an internal comparison. In an email presented as evidence, Nadella drew a historical parallel to Microsoft’s early partnership with IBM, writing that he did not want Microsoft to become IBM while OpenAI became the next Microsoft.

Market Impact and Financial Performance

The revelations underscore the scale of the financial bet Microsoft placed on generative AI before it became a global commercial race. The company has since integrated OpenAI’s models across its product ecosystem, including Copilot, Azure AI services, and enterprise productivity tools.

Industry analysts say the partnership has positioned Microsoft as a dominant player in the AI market, competing directly with Google, Amazon, and Meta. In its fiscal second quarter ended December 2025, Microsoft reported $81.3 billion in revenue, up 17% year-over-year, with a $7.6 billion net gain from OpenAI-related investments boosting the bottom line.

The disclosures during the trial offer a rare window into how one of the world’s largest technology companies evaluated and structured its most consequential AI bet. With the Musk v. Altman case ongoing, further internal documents are expected to surface, potentially shedding additional light on the financial architecture behind the partnership that helped define the generative AI era.