Sam Altman, chief executive officer of OpenAI Inc., speaks during BlackRock's 2026 Infrastructure Summit in Washington, DC, US, on Wednesday, March 11, 2026.
Daniel Heuer | Bloomberg | Getty Images
OpenAI is preparing to confidentially file a draft of its IPO prospectus as soon as Friday, as the company gears up for what could be one of the largest public markets debuts in history, CNBC confirmed on Wednesday.
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