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December 31 13%
Next is October 31 at 1.2%. Only Polymarket lists this market, so there is no second price to compare.
Consensus blends each venue’s last price, weighted by how much has traded there. Best Yes price is the cheapest ask across venues, and the payout is what a winning $100 stake returns before fees. Open a row for each venue’s contract name, bid and ask, and how closely their rules match.
Prices come from our regular polls of each venue. Ages are as of when this page was built.


The top 2 outcomes on both venues, with the consensus between them. Hover for exact values.
Each venue’s resting orders for the selected outcome’s Yes contract, side by side. Top of book streams live; depth refreshes every 15 seconds.
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Enter a stake to see where it buys the most after fees, using each venue’s live order book.
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Buys at the asks resting now (taker orders), cheapest after fees first, from order-book snapshots up to 15 seconds old. Fees: Kalshi 0.07 × price × (1 − price) per share, rounded up to the cent; Polymarket 0.04 × price × (1 − price) per share (politics rate). Fee calculator. Estimates only, not advice.
Live prediction market odds for "IAEA visits Isfahan, Fordow, or Natanz nuclear site by...?". December 31 leads at 13%. Next is October 31 at 1.2%. $504K has traded across 2 outcomes on Polymarket. The market is expected to resolve by Nov 1, 2026.
This market will resolve to "Yes" if one or more International Atomic Energy Agency (IAEA) officials physically visit the Isfahan Nuclear Technology Center, Fordow Fuel Enrichment Plant, or Natanz Nuclear Facility in Iran between market creation and the specified date, 11:59 PM ET. Otherwise, this market will resolve to "No." Pickaxe Mountain is not considered part of the Natanz Nuclear Facility. IAEA officials refers to individuals acting in an official capacity on behalf of the IAEA, including IAEA inspectors, staff, and the Director General. A qualifying visit must include physical presence within the recognized boundaries of one of the listed sites. Visits to other sites in Iran, or virtual inspections of the sites, will not qualify. The resolution sources for this market will be the IAEA and a consensus of credible reporting.
It is the price of a Yes contract that pays $1 if the outcome happens. A 14¢ price means traders put the chance near 14%. Where two venues list the same outcome, we blend their last prices, weighting the venue with more trading volume more heavily (neither counts for less than a quarter). When only one outcome can win, each venue’s prices add up to a little over 100% (its margin); the fair chance removes that margin so the outcomes add up to exactly 100%.
A Yes contract pays $1 if it wins, so at the best ask a $100 stake buys 100 ÷ ask contracts. At 18¢ that is about 555 contracts, paying $556 (5.56x) if Yes happens. Venue fees and price slippage on larger orders are not included.
Each venue has its own traders, fees and order book. Contracts can also settle on slightly different terms, which is why each row lists how closely the rules match.
Only when you can buy Yes on one venue below what someone pays for Yes on the other, after fees, and both contracts settle the same way. We show the executable bid and ask so you can check.
Venue prices refresh every few minutes, and the order book and live quotes stream continuously. Each venue’s card shows when we last observed it.