Will OpenAI's valuation hit 2027 by December 31?

Platform comparison

Active sub-markets

Market context

OpenAI would need to print a higher Nasdaq Private Market valuation than the current $852 billion level already reported after its March 2026 financing round, with any NPM price at or above the target before 31 December 2026 triggering a Yes. That sets a very high bar: the company has already moved from a $300 billion figure cited in earlier 2026 commentary to $852 billion in the latest official announcement, so the market is really asking whether the next repricing is another large jump rather than a routine mark-up. At a 6% crowd-implied chance, traders appear to think that sort of step-up is possible but not the base case.

For context, private company valuation markets tend to reprice on fresh primary capital, major secondary transactions, or clearly stronger revenue guidance, not on day-to-day operating news. OpenAI’s most recent round was disclosed by the company as $122 billion in committed capital at an $852 billion post-money valuation, and Bloomberg reported the same figure in early April 2026. In comparison with Polymarket, Kalshi, Betfair and Smarkets, the key difference is presentation: Polymarket shows the crowd-implied probability directly, while the others typically quote decimal odds or percentage equivalents that embed commission and may be less transparent about fees. Access also varies, with KYC and jurisdictional limits more restrictive on some regulated books than on crypto-native venues.

The main catalysts are likely to be any new fundraising disclosure, a large secondary sale, or updated NPM prints after business days that feed into the once-daily 1:00 pm ET publication lag. Traders should watch for reports of strategic investors, especially if Microsoft, SoftBank or other deep-pocketed backers return at a materially higher price. The timing matters because the market can remain open into early January 2027 if NPM has not yet published all relevant business-day data, so late-December transactions could still move the outcome once the delayed price is posted.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Will OpenAI's valuation hit 2027 by December 31? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. Live odds come from the Polymarket order book; the other venues' contract details are maintained manually because their APIs aren't directly comparable. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). PolyGram routes every trade directly into Polymarket's on-chain settlement, which is why payouts land fastest.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

What does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.