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Will CMI declare a Millennium Prize Problem solved by ___? — Polymarket Odds

Updated September 24, 2026 · Category: Tech & AI · Market end date: January 1, 2029

As of September 24, 2026 at 15:51 UTC, the leading outcome is December 31, 2028 at 29%, followed by December 31, 2027 at 13.5%, December 31, 2026 at 4.0%. The market has $398.3K in total volume and $2.1K in the last 24 hours.

Current odds

OutcomeProbability24h changeVolume
December 31, 202829%
-3.5 pts$44.4K
December 31, 202713.5%
$82.7K
December 31, 20264.0%
-0.1 pts$271.2K

Total volume $398.3K · 24h volume $2.1K · Liquidity $76.1K. Prices are Polymarket YES-share prices read as probabilities; they are not executable quotes.

30-day price history

0%25%50%75%100%Aug 25Sep 24

December 31, 2028 December 31, 2027 December 31, 2026 · 30-day price history (12-hour points)

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How this market resolves

This market will resolve to "Yes" if the Clay Mathematics Institute (CMI) awards a Millennium Prize for any of the six remaining unsolved Millennium Prize Problems, or otherwise officially declares any of these problems solved on its website or in an official communication, by 11:59 PM ET on the date specified in the title. Otherwise, this market will resolve to "No".

This market will resolve solely based on a qualifying declaration by CMI that one of the six remaining unsolved Millennium Prize Problems has been solved, regardless of whether the solution takes the form of a positive proof, counterexample, disproof, or any other resolution accepted by CMI.

A Millennium Prize award will qualify as an official declaration, but is not required; an official CMI statement that a problem has been solved is sufficient on its own. Whether the solution was produced in whole or in part by artificial intelligence, and whether any recipient accepts or declines a prize, will not be considered.

A published or publicly posted proof will not qualify on its own, regardless of its acceptance by the mathematical community.

The primary resolution source will be official information from the Clay Mathematics Institute (e.g., https://www.claymath.org); however, a consensus of credible reporting may be used to confirm that a qualifying CMI declaration or award has occurred.

Summary of the market's published rules. The rules on Polymarket control settlement; check them there before relying on any outcome: open this market on Polymarket.

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Frequently asked questions

What are the current Polymarket odds for Will CMI declare a Millennium Prize Problem solved by ___?

As of September 24, 2026 at 15:51 UTC, the leading outcome is December 31, 2028 at 29%, followed by December 31, 2027 at 13.5%, December 31, 2026 at 4.0%. The market has $398.3K in total volume and $2.1K in the last 24 hours.

When does the Will CMI declare a Millennium Prize Problem solved by ___ market end?

The event's listed end date is January 1, 2029. Each outcome settles under the market's written rules, summarised on this page, which can differ from the end-date field.

How are these odds calculated?

They are the displayed prices of each outcome's YES share on Polymarket. A price of 60¢ implies roughly a 60% chance. This page refreshes the numbers twice a day, so they are not live quotes.

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