KalshiCheck availabilityKYC requiredVerified resolution dataWell calibratedSelected book midpoint
Before Jan 1, 2028 · —
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Stored price
Before Jan 1, 2028 62.5%
Before Jan 1, 2028 62.5%Market quality
61 / 100
Medium quality24h Volume
$4.3K
Open interest
$28K
High open interestBid / Ask
— / —
Before Jan 1, 2028Spread
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Market data
Updated 10 minutes ago
Sep 8, 26, 10:00 PM UTCJan 1, 27, 4:59 AM UTC
Chart and changes show stored historical probabilities, not the selected live book.
Trends
Selected row: book midpoint. Other rows: stored references, possibly normalized; 24h changes use stored history.
Venue terms
Source: Kalshi
Informational venue terms only; CoinRithm paper trading uses its own rules.
- Early close:
- Yes
- Settlement timer:
- 30m (informational)
Market depth · Before Jan 1, 2028
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Related Markets
Related questions for context, not a comparison of equivalent contracts.
Will OpenAI publicly claim a solution to a SECOND Millennium Prize Problem by November 30, 2026?
Manifold MarketsWill there be a verified AI-assisted solution to one of the Millennium Prize problems by the end of 2026?
Manifold MarketsAI lab announces another Millennium Prize solution by which date?
PolymarketAnthropic announces a Millennium Prize solution by which date?
PolymarketWill a correct solution to a Millennium Prize Problem be published by the end of 2030?
Manifold MarketsMillennium: Prize Problem solution published before 2028 and verified?
Manifold MarketsRules
If OpenAI announces a complete solution developed by OpenAI or researchers collaborating directly with OpenAI on that solution to one of the five qualifying Millennium Prize Problems (Birch and Swinnerton-Dyer, Hodge, P versus NP, Riemann, or Yang-Mills), excluding the Navier-Stokes existence and smoothness problem and the Poincare conjecture before Jan 1, 2028, then the market resolves to Yes.
Settles via:OpenAI
- The qualifying announcement must expressly state that OpenAI developed or co-developed the solution, or expressly identify outside researchers as having collaborated with OpenAI on developing that solution. The qualifying problems are the Birch and Swinnerton-Dyer Conjecture, Hodge Conjecture, P versus NP, Riemann Hypothesis, and Yang-Mills existence and mass gap problem. The Navier-Stokes existence and smoothness problem and the Poincare conjecture do NOT count. Work by an independent ChatGPT user does NOT count, even if OpenAI publicizes it. Providing model access or research credits alone is not direct collaboration on the solution. Partial results, numerical evidence, or formalization of a previously known solution do NOT count as a complete solution. Clay acceptance, peer review, and a prize award are not required.
Rules for each outcome
- Before Jan 1, 2028
- If OpenAI announces a complete solution developed by OpenAI or researchers collaborating directly with OpenAI on that solution to one of the five qualifying Millennium Prize Problems (Birch and Swinnerton-Dyer, Hodge, P versus NP, Riemann, or Yang-Mills), excluding the Navier-Stokes existence and smoothness problem and the Poincare conjecture before Jan 1, 2028, then the market resolves to Yes.
- Before Jan 1, 2027
- If OpenAI announces a complete solution developed by OpenAI or researchers collaborating directly with OpenAI on that solution to one of the five qualifying Millennium Prize Problems (Birch and Swinnerton-Dyer, Hodge, P versus NP, Riemann, or Yang-Mills), excluding the Navier-Stokes existence and smoothness problem and the Poincare conjecture before Jan 1, 2027, then the market resolves to Yes.