Israel closes its airspace by September 30?96%21.5Will Luiz Inácio Lula da Silva win the 2026 Brazilian presidential election?53%6.0Kanye West performs in Russia by October 31?37%16.0Will Flávio Bolsonaro win the 2026 Brazilian presidential election?44%5.1Will CMI declare a Millennium Prize Problem solved by December 31, 2026?10%2.0Did OpenAI just solve navier stokes??98%6.0Will Bitcoin dip to $75,000 in September?62%4.5Will United Russia (ER) gain the most seats in the next Russian parliamentary election?75%5.0Will WTI Crude Oil (WTI) hit (HIGH) $95 in September?69%5.5Will there be no change in Fed interest rates after the September 2026 meeting?46%3.0Will New People (NL) gain the most seats in the next Russian parliamentary election?22%3.8Will Anthropic release a new frontier model before their IPO?67%4.9Netanyahu out by end of 2026?51%3.0US announces end of Iranian blockade by December 31, 2026?55%3.5Will WTI Crude Oil (WTI) hit (HIGH) $100 in September?36%3.0Will Speaker Mike Johnson send the House members home early before midterms?81%14.6
PolymarketAI / TechUpdated 9m ago

Will CMI declare a Millennium Prize Problem solved by December 31, 2026?

Market probability
9.5%
2 percentage points
over 24 hours11.5%9.5%
114 days until the event deadline
Deadline: December 31, 2026 at 11:59 PM ET

Confirmed repricing, but the latest probability is still moving.

The pricing is supported by healthy trading volume and market depth, a tight spread. The probability moved another 2.5 points in the past hour — the market is still repricing.

How credible was the move?

Three separate questions — a move can be genuine while the latest price is still settling. Methodology →

Move validity

Is the move backed by real trading and depth?

Strong

The pricing is supported by healthy trading volume and market depth, a tight spread.

Consensus stability

Has the market settled at the new probability?

Unsettled

The probability moved another 2.5 points in the past hour — the market is still repricing.

Contract clarity

Will the rules resolve without ambiguity?

High

The resolution rules are relatively specific, with a named source and a defined deadline.

Recent trade activity$10.7K traded

From the latest trade tape (most recent 200 prints) — a live activity sample, not a lifetime total.

What this market actually measures

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 summary shows the opening of the venue's official rules. ProbCast has not yet generated an independent plain-English interpretation for this contract — review the full rules before relying on it.

View full official resolution rules

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.

What could move this market next?

  • The market's deadline arrivesDecember 31, 2026 at 11:59 PM ET

    The contract must resolve based on what has happened by this date.

Derived from the contract's own mechanics as of Sep 8, 1:46 PM ET. ProbCast does not list scheduled meetings, announcements, or data releases it cannot verify.

Advanced analysis (experimental)

Research signals — these models are still accumulating the history needed for full validation, and they can disagree with the headline read. Model confidence: high · expected error ±18 pts.

TrendingLegacy movement classifier: meaningful

What's happening

medium classifier confidence
Trending

A sustained one-directional drift. This can be a genuine trend or crowd herding; watch whether liquidity and breadth confirm the move.

  • Directional drift sustained across 1h / 6h / 24h windows
  • Executed flow buy-heavy (81%)

Read the latest price with caution; conditions make it an unreliable summary right now.

More details — reliability score, dynamics, durability
Reliability score
30Low
Where the price path tends to go next384 observed
  • Stable consensus94%
  • Choppy / mean-reverting2%
  • News repricing2%

Short-term motion of the price line (~1h), distinct from the environment above — not a prediction of the final outcome.

DurabilityHigh· half-life ~2h
PredictabilityElevated irreducibility

A read-only classification of the market environment — how much weight the current price deserves as a read of consensus. It describes conditions, never a trade.

Market data

24h volume

$67.6K

Liquidity

$90.6K

Total volume

$122.9K

Category
AI / Tech
Venue
Polymarket
Open interest
Spread
1.0 pts
Best bid
9.0%
Best ask
10.0%
7-day range
9.5% – 12.0%
Resolves
Dec 31, 2026
Change (pts)1H-2.56H-2.024H-2.07D-2.0

Related markets