KalshiCheck availabilityKYC required2% feeVerified resolution dataFairly calibratedCurrent implied probability
Before Jan 1, 2027 29%-2.0pt
Market quality
63 / 100
Medium quality24h Volume
$7.7K
Liquidity
$6.6K
Medium liquidityBid / Ask
10.0% / 12.0%
Spread
2.0 pt
Tight spreadMarket data
Updated 9 minutes ago
Sep 5, 26, 10:37 PM UTCOct 1, 26, 3:59 AM UTC
Trends
Related Markets
Related questions for context, not a comparison of equivalent contracts.
Will OpenAI announce a Millennium Prize solution?
KalshiAI solves Millennium Prize Problem in September 2026?
Manifold MarketsMillennium: Prize Problem solution published before 2028 and verified?
Manifold MarketsWill a correct solution to a Millennium Prize Problem be published by the end of 2030?
Manifold MarketsWhen will the next Millennium Prize be awarded?
KalshiWill CMI declare a Millennium Prize Problem solved by which date?
PolymarketRules
If Anthropic announces a complete solution, developed by Anthropic or researchers collaborating directly with Anthropic on that solution, to one of the six Millennium Prize Problems unsolved as of September 5, 2026 the named outcome, then the market resolves to Yes.
Settles via:Anthropic
- The qualifying announcement must expressly state that Anthropic developed or co-developed the solution, or expressly identify outside researchers as having collaborated with Anthropic on developing that solution.
- The qualifying problems are the Birch and Swinnerton-Dyer Conjecture, Hodge Conjecture, Navier-Stokes existence and smoothness problem, P versus NP, Riemann Hypothesis, and Yang-Mills existence and mass gap problem.
- Work by an independent Claude user does NOT count, even if Anthropic 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.
Open markets
AIKALSHITop AI model in September?
- claude-fable-5.1-max+60.0pt71%
- claude-opus-5-max+1.0pt7%
- claude-opus-4-6-thinking4%
+3 more outcomes
- Total Vol
- $154.3K
- 24h Vol
- $116.6K
KALSHIBest AI at the end of 2026?
- Claude+4.8pt60.8%
- ChatGPT+0.5pt25.5%
- Grok-3.4pt5.9%
+5 more outcomes
- Total Vol
- $10.5M
POLYMARKETAnthropic IPO by which date?
- December 31,-1.0pt90%
- December 15,+1.0pt86%
- November 30,84%
+7 more outcomes
- Total Vol
POLYMARKETWill CMI declare a Millennium Prize Problem solved by which date?
- 2028+22.0pt62.2%
- 2027+11.0pt28.6%
- 2026+4.5pt9.2%
KALSHIBest AI in Sep 2026?
- Claude+5.0pt80.4%
- ChatGPT-2.0pt12.2%
- Grok2.8%
+4 more outcomes
- Total Vol
- $374.6K
- 24h Vol
POLYMARKETOpenAI’s Astra Model: Text Arena Debut?
- 1480+-1.0pt66%
- 1490+-3.0pt51%
- 1500+-1.0pt30%
+2 more outcomes
- Largest IPO by market cap in 2026?
- OpenAI IPO Closing Market Cap
- When will OpenAI achieve AGI?
- OpenAI announces it has achieved AGI before 2027?
- Will Anthropic’s valuation hit __ by December 31?
- Will OpenAI's valuation hit __ by December 31?
- Next Google Gemini Pro Model released by which date?
- Anthropic IPO Closing Market Cap
- What will OpenAI's IPO valuation be?
- Which company has best AI model end of 2026?
Frequently asked questions
- What are the current odds for Will Anthropic announce a Millennium Prize solution??
- Kalshi prices Before Jan 1, 2027 at 29% as of September 8, 2026.
- When does Will Anthropic announce a Millennium Prize solution? resolve?
- Will Anthropic announce a Millennium Prize solution? is scheduled to resolve on October 1, 2026.
- How is Will Anthropic announce a Millennium Prize solution? settled?
- Kalshi settles this market as follows: If Anthropic announces a complete solution, developed by Anthropic or researchers collaborating directly with Anthropic on that solution, to one of the six Millennium Prize Problems unsolved as of September 5, 2026 the named outcome, then the market resolves to Yes.