Traders on Polymarket are betting heavily against OpenAI achieving a market capitalization between $1 trillion and $1.25 trillion at the close of its first trading day, with the contract showing just a 14% probability. The $204,000 in volume reflects active interest in the question, though no other major prediction platforms currently offer a comparable market, limiting cross-platform analysis. The 86% implied probability that OpenAI will land below $1 trillion suggests skepticism about the company's ability to sustain the lofty private valuations that have circulated in recent funding rounds. No specific external trigger was identified in today's news flow, as no relevant headlines were available to explain the current odds. The market's view may reflect broader uncertainty about the timing and terms of a potential IPO, which is not expected until at least mid-2026 based on the resolution date. While OpenAI remains a dominant force in generative AI, the prediction market data indicates that traders see a significant gap between private hype and public market reality.