Will OpenAI's valuation hit (HIGH) $1.75T by December 31?

As of September 3, 2026, Polymarket prices “Will OpenAI's valuation hit (HIGH) $1.75T by December 31?” at 23% YES with $72K traded. No tracked wallet holds a position on this market, so there is no verdict.

Prediction markets put the probability at 26%: Will OpenAI's valuation hit (HIGH) $1.75T by December 31. Currently, markets see this as unlikely (26% YES).

What’s Happening

As of late July 2026, traders on Polymarket assign only a 26% probability that OpenAI's valuation will hit $1.75 trillion by December 31, a threshold that would require a roughly 40% increase from the company's last reported private round. The market's "NO" side has held a commanding 74% share since mid-June, when a wave of secondary share sales and employee tender offers pegged OpenAI's implied worth near $1.25 trillion. That gap between current marks and the $1.75T target reflects skepticism about whether any single funding event—or a potential direct listing—can close the gap in five months, especially with capital markets increasingly selective about AI mega-rounds following the June 12 debut of SpaceX/xAI at a $1.75 trillion valuation, which absorbed significant institutional liquidity. [Klover, Jun 07]

The comparison to SpaceX/xAI is unavoidable for market participants, as that conglomerate reached the exact $1.75T figure OpenAI is now chasing, but did so on the back of $18.67 billion in revenue across rocket, satellite, and AI divisions. OpenAI, by contrast, is projected to finish 2026 with roughly $12 billion in annualized revenue, and its path to a higher valuation hinges on enterprise adoption of GPT-5.6 and the upcoming "Sol" reasoning model, which have shown mixed benchmark results against Anthropic's Claude Opus line. A key overhang is the October 2026 IPO window for Anthropic, currently valued at $965 billion with $47 billion in ARR—if Anthropic prices above $1 trillion, it could reset the entire frontier-AI comp table and force OpenAI's board to either accelerate its own listing or accept a lower private mark. [Cryptoslate, Jul 11]

What happens next depends on two catalysts before the December 31 deadline. First, OpenAI must close a rumored $10 billion primary round led by sovereign wealth funds from the Middle East, which sources say could price the company at $1.5 trillion—still short of the target but within striking distance if a secondary tranche follows. Second, the company's board has discussed a January 2027 direct listing, which would make a December valuation print largely symbolic; however, if GPT-5.6's enterprise API adoption numbers, due in September, disappoint, the current 26% probability could drift lower. The market's structure also reflects a calendar quirk: with the July 24 settlement of the "Next Claude Opus" market and the August 6 Grok 4.6 release window now behind them, traders are rotating attention to year-end valuation events, making this one of the most actively watched AI-financial binaries of Q4. [Cryptoslate, Aug 06]

Traded on Polymarket — $72K Volume