OpenAI’s latest priced round closed at an $852 billion post-money valuation in March 2026, with secondary-market marks holding near $860 billion as of September. Investor-initiated talks in mid-September for a pre-IPO round at $1.2 trillion or higher, driven by $40 billion-plus annualized revenue run rate and traction in Codex and newer models, represent the dominant near-term catalyst. The company’s confidential IPO filing and CEO comments delaying a 2026 listing until safety work advances further support expectations that any valuation step-up would likely occur privately before year-end. Trader consensus on Polymarket reflects these capital-raising dynamics and revenue trajectory versus the remaining calendar window.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedOpenAI valuation market prices peak near $1 trillion ahead of expected IPO
↑$1.0T surges to 87%37%
Market prices for OpenAI's valuation options peaked near 87% for the $1 trillion threshold, reflecting strong investor belief in reaching or exceeding this valuation by the end of September 2026, despite IPO delays.





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