Will OpenAI announce another Millennium Prize solution by December 31, 2026? Odds and prices

18%
Yes

Average of 2 venues, 7 points apart · Updated

"Will OpenAI announce another Millennium Prize solution by December 31, 2026" is priced at 15% on Polymarket and 22% on Kalshi, 7 points apart: the venues disagree, so 18% is their average, not a consensus. The contract settles by Dec 31, 2026; each venue words its settlement rules itself, compared below.

This question on Polymarket and Kalshi.

$21K
24h volume, both venues
2
venues quoting
Dec 31, 2026
settles

Odds by venue

Yes: Will OpenAI announce another Millennium Prize solution by December 31, 2026?: price on each venue, the fee, 24h volume and liquidity, with a link to trade
VenueYesNoFee24h volumeLiquidity
PolymarketClose-only for US residents15¢cheapest to buy86¢free$21K$13KTrade →
Kalshi$50 bonus22¢78¢1.2¢$19–Trade →
Updated Fee: the taker fee on one contract at the price shown, as each venue publishes it; Polymarket’s is its international book.

How the odds have moved

Polymarket · Will OpenAI announce another Millennium Prize solution by December 31, 2026
15%unchanged since Oct 18
Yes price
Oct 187% – 25% scaleOct 25

One venue's series for the result the headline prices, not a blend; venues tick at different cadences and interpolating one onto the other would invent points.

What the market is actually pricing

Venues word settlement differently for the same question, and the difference decides who gets paid. This is the comparison no venue publishes about its rivals.

Polymarket

This market will resolve to "Yes" if OpenAI, or an official representative of OpenAI, announces that OpenAI has solved any of the qualifying Millennium Prize Problems between market creation and the…

Full settlement wording

This market will resolve to "Yes" if OpenAI, or an official representative of OpenAI, announces that OpenAI has solved any of the qualifying Millennium Prize Problems between market creation and the specified date, 11:59 PM ET. Otherwise, this market will resolve to "No".

The qualifying problems are the Riemann Hypothesis, P versus NP, the Yang-Mills existence and mass gap problem, the Hodge Conjecture, and the Birch and Swinnerton-Dyer Conjecture (https://www.claymath.org/millennium-problems/). Announcements concerning the Navier-Stokes existence and smoothness problem will not qualify.

A qualifying announcement must express that the problem has been solved; announcements of partial results or progress toward a solution will not qualify. The announcement must present the solution as the work of OpenAI, its researchers, or its models, alone or jointly with outside researchers. An announcement that only credits or congratulates outside researchers, including researchers who used OpenAI's models, compute, or research credits, will not qualify. No further confirmation from Clay Math Institute or any other organization is required.

The primary resolution source for this market will be official information from OpenAI and/or its official representatives; however, a consensus of credible reporting may also be used.

Kalshi

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…

Full settlement wording

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.

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.

Where you can trade this

The Trade links in the tables above open each venue's own market. The reviews cover sign-up, funding and payouts.

Related markets

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Common questions

What are the odds on "Will OpenAI announce another Millennium Prize solution by December 31, 2026"?

The venues disagree: 15% on Polymarket and 22% on Kalshi. The 18% shown is their average; the gap often comes from settlement rules worded differently, compared on this page.

Where can I trade "Will OpenAI announce another Millennium Prize solution by December 31, 2026"?

On Polymarket and Kalshi. Availability by state varies for sports contracts; see the legal pages.

Why do the venues show different prices?

Different traders, different fees, and different settlement wording. The gap is the reason this page exists; the cheaper side is marked in the table.