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OpenAI gives Microsoft 27% stake worth US$135 billion, clears path to for-profit

CEO Sam Altman is not getting a stake in the newly restructured company

    • ChatGPT maker OpenAI has spent much of this year working to restructure as a more traditional for-profit company.
    • ChatGPT maker OpenAI has spent much of this year working to restructure as a more traditional for-profit company. PHOTO: REUTERS
    Published Tue, Oct 28, 2025 · 10:42 PM — Updated Tue, Oct 28, 2025 · 11:08 PM

    [SAN FRANCISCO] OpenAI is giving its long-time backer Microsoft a 27 per cent ownership stake as part of a restructuring plan that took nearly a year to negotiate, removing a major uncertainty for both companies and clearing the path for the ChatGPT maker to become a for-profit business.

    Under the revised pact, Microsoft will get a stake in OpenAI worth about US$135 billion, the companies said in a statement on Tuesday (Oct 28).

    In addition, Microsoft will have access to the artificial intelligence startup’s technology until 2032, including models that achieved the benchmark of artificial general intelligence (AGI).

    OpenAI had spent much of this year working to restructure as a more traditional for-profit company. Microsoft, which backed OpenAI with some US$13.75 billion, was the biggest holdout among the ChatGPT maker’s investors, Bloomberg News has reported.

    “OpenAI has completed its recapitalisation, simplifying its corporate structure,” said Bret Taylor, OpenAI’s chairman, in a statement. “The nonprofit remains in control of the for-profit, and now has a direct path to major resources before AGI arrives.”

    OpenAI nonprofit entity, dubbed the OpenAI Foundation, is also set to receive an equity stake worth roughly US$130 billion as part of its corporate restructuring. The foundation plans to initially focus on funding work to “accelerate health breakthroughs,” among other efforts.

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    Sam Altman, OpenAI’s co-founder and chief executive, is not getting a stake in the newly restructured company, according to OpenAI.

    Microsoft shares jumped as much as 4.2 per cent on Tuesday to US$553.72. Many on Wall Street had cited the changing OpenAI relationship as a serious point of uncertainty for the software maker.

    Anurag Rana, an analyst at Bloomberg Intelligence, said that Microsoft keeping OpenAI’s intellectual-property rights for both products and models through 2032 “is the most important aspect” of the revised agreement. “Microsoft is using either OpenAI or Anthropic models in its Copilot products as it develops its own.”

    One major sticking point in the monthslong negotiations between Microsoft and OpenAI had been what happened once OpenAI had achieved AGI, or AI that outperforms humans at most economically useful tasks.

    Under the new agreement, the threshold must be verified by an “independent expert panel.” Once achieved, Microsoft will no longer get a cut of OpenAI’s revenue.

    Microsoft is also losing its right of first refusal on new cloud infrastructure business from OpenAI. Azure had long been OpenAI’s exclusive provider, but Microsoft began allowing it to seek out services from other vendors like Oracle Corp. as long as it had an option to the business first. OpenAI will make an additional US$250 billion commitment to Azure.

    OpenAI’s restructuring plans had faced other complications, including regulatory scrutiny and a lawsuit filed by Elon Musk, an early backer who split with the company and accused the startup of defrauding investors about its commitment to its charitable mission.

    Microsoft’s access to OpenAI’s technology will not include consumer hardware, the companies said. OpenAI will also have the ability to “jointly develop some products with third parties.” BLOOMBERG

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