Will OpenAI announce another Millennium Prize solution by December 31, 2026?
The field · 2 outcomes
From Today's edition · Oct 18, 2026

This question asks whether OpenAI will publicly announce another Millennium Prize solution before the market resolves on December 31, 2026. The newest verified public OpenAI math item I found is an October 15, 2026 update to its October 6 post on “sharing AI progress in mathematics,” where OpenAI said it was contributing $5 million to a Simons Foundation initiative and working with an advisory group on how to share and interpret AI-generated results. [1] Earlier, on September 8, 2026, OpenAI said an internal model had produced a solution to the Navier–Stokes Millennium Prize problem and a Lean formalization, and on September 21 it announced an Advisory Group on Mathematics and Artificial Intelligence while saying the model had resolved more than 100 long-standing open problems. OpenAI’s current newsroom/research listings still surface those October and September math posts, which suggests those remain the latest publicly verified milestones in this area rather than a second Millennium Prize announcement. [2]
Context by Predxy AI ·
- 1. Sharing AI progress in mathematics | OpenAI openai.com
- 2. On the Navier–Stokes Millennium Prize Problem | OpenAI openai.com
AI-researched background, with linked sources. It does not explain or predict market movements.
Probability history
Market-implied probabilities on Polymarket · All recorded historyDrag to move · pinch or ⌘/Ctrl+scroll to zoom
Based on market prices from Polymarket. These may differ from Predxy’s combined probability above.
What happened
- OpenAI said the solution came with a Lean formalization. On the Navier–Stokes Millennium Prize Problem | OpenAI
- OpenAI announced an AI-generated Navier-Stokes solution with a writeup and Lean formalization. On the Navier–Stokes Millennium Prize Problem | OpenAI
- Clay Mathematics Institute said the problem had apparently been settled but prize rules still applied. On the Navier–Stokes Millennium Prize Problem | OpenAI
- OpenAI said its model had resolved more than 100 long-standing open problems. On the Navier–Stokes Millennium Prize Problem | OpenAI
- OpenAI said a new internal model had resolved Navier-Stokes and more than 100 other open problems. Sharing AI progress in mathematics | OpenAI
- OpenAI published a post on sharing AI progress in mathematics. Sharing AI progress in mathematics | OpenAI
- OpenAI said it was working with an advisory group on how to share and interpret AI-generated results. Sharing AI progress in mathematics | OpenAI
Dated from the reporting the question's context cites, and placed alongside the price — never as the reason it moved. Written by AI from cited sources; in English.
If you’re right
What a stake pays at each venue, before fees| Venue | Price | Shares | Pays | Profit |
|---|---|---|---|---|
| Best payout | 15.5¢* | 645 | $645 | +$545 6.5× |
| 17¢ | 588 | $588 | +$488 5.9× |
Every share pays $1 if the side wins and nothing if it loses. Venue fees, and the price moving under a large order, are not included. * Last traded price, not a live quote. Not financial advice.
Where this question trades
2 venues- Will OpenAI announce another Millennium Prize solution by December 31, 2026?85% Nono volume publishedResolution rulesSet your country to see where you can trade.Set your country
- Will OpenAI announce another Millennium Prize solution by December 31, 2026?84% No$5.9K 24h volumeResolution rulesSet your country to see where you can trade.Set your country
More in AI
- 1Anthropic IPO Officially Confirmed By: November 30, 202660%Yes24 pts
- 2Anthropic IPO Officially Confirmed By: December 31, 202685%Yes1 pts
- 3Which Companies Will Confirm an IPO in 2026: Anthropic81%Yes4 pts
- 4Anthropic IPO Officially Confirmed By: June 30, 202792%Yes0 pts
- 5Next Fable Model (5.2+) released by October 31, 2026?28%Yes0 pts
As of Oct 24, 01:05 PM UTC · Market prices are not certainties.