OpenAI's IPO valuation market reflects trader focus on the gap between its March 2026 $852 billion post-money valuation and accelerating fundamentals, with recent reports of early talks for a $30 billion-plus bridge round at roughly $1.4 trillion pre-money underscoring momentum. Annualized revenue has surged toward $50-70 billion amid enterprise expansion and new offerings like the Dots AI agent, supporting implied probabilities clustered in the $1.5-2.0 trillion range, while the September 2026 decision to defer listing until 2027 due to AI safety priorities introduces downside scenarios below $1 trillion. The closely contested odds highlight uncertainty around execution of the pre-IPO financing, competitive positioning versus peers like Anthropic, and how revenue multiples will translate once public-market benchmarks emerge in 2027.