Polymarket contract tests whether OpenAI hits $1.25 trillion valuation by year-end

#What happened

A Polymarket contract now tests whether OpenAI reaches a $1.25 trillion valuation by December 31, 2026. The contract primarily resolves off valuations published by Nasdaq Private Market, with rules that also account for an IPO or direct listing. Meanwhile, proposed terms for a roughly $30 billion financing round could value OpenAI above $1.4 trillion. The proposed financing valuation and the contract's $1.25 trillion threshold are separate measures, and the round had not been announced as closed as of October 19.

#Why it matters

Prediction-market interest is effectively pricing OpenAI's near-term valuation trajectory in public: the contract's $1.25 trillion bar sits below the proposed round's $1.4 trillion figure, so the market is asking whether OpenAI clears a lower threshold than its latest financing terms imply. OpenAI's last announced round closed March 31, 2026, at an $852 billion post-money valuation with $122 billion in committed capital, so either threshold implies a large step-up. Sources: TokenPost, "OpenAI Valuation Contract Sets a $1.25 Trillion Year-End Test", https://www.tokenpost.com/news/investing/36405 (published 2026-10-21). Verified October 21, 2026.