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Will OpenAI IPO by December 31 2026?

31.5%
Consensus Probability (Model B — Geometric Mean of Odds)
2 platforms · 10pp spread · $421K

Across 2 prediction market platforms, "Will OpenAI IPO by December 31 2026?" has a consensus probability of 31.5%. Manifold: 26.9%, Polymarket: 36.5%. Consensus via geometric mean of odds (Satopaa et al., 2014), validated by IARPA ACE tournament.

Platform Comparison — white line = consensus
Manifold
View →
27%
290 traders
Polymarket
View →
36%
$421K
Probability Over Time
All 6 Consensus Models
Market Details
Manifold
Updated 5h ago
Volume
Liquidity
Bid / Ask
— / —
Spread
Opened
Apr 2026
Resolves
Dec 2026
Polymarket
Updated 1h ago
Volume
$421K
Liquidity
$9K
Bid / Ask
36.0% / 37.0%
Spread
1.0%
Opened
Apr 2026
Resolves
This market will resolve to "Yes" if OpenAI completes an Initial Public Offering (IPO) by the listed date ET, as confirmed by official company announcements and credible news sources. Otherwise, this market will resolve to "No". The IPO refers to the first sale of stock by the l…

About This Consensus

Computed from 2 platforms using geometric mean of odds (Satopaa et al., 2014). This method was validated by the IARPA ACE forecasting tournament as the most accurate probability aggregation technique. Full methodology →

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