Polymarket vs. Kalshi
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See where the two biggest prediction markets disagree. Pick any two markets, or start from the biggest gaps below: prices, volume, history and the resolution rules, side by side.
Where Polymarket and Kalshi disagree most
Markets that look like the same event on both platforms, matched automatically by wording, numbers and date. A gap can also come from different rules, so open the comparison and read both before drawing conclusions.
Will Alexandria Ocasio-Cortez win the 2028 Democratic presidential nomination? Polymarket 17% Kalshi 14% 3 pt gap Will Gavin Newsom win the 2028 Democratic presidential nomination? Polymarket 15% Kalshi 14% in line Will Andy Beshear win the 2028 Democratic presidential nomination? Polymarket 3% Kalshi 5% in line Will Josh Shapiro win the 2028 Democratic presidential nomination? Polymarket 6% Kalshi 5% in line Will Kamala Harris win the 2028 Democratic presidential nomination? Polymarket 7% Kalshi 8% in line Will Jon Ossoff win the 2028 Democratic presidential nomination? Polymarket 14% Kalshi 14% in line Will James Talarico win the 2028 Democratic presidential nomination? Polymarket 3% Kalshi 3% in line Will Pete Buttigieg win the 2028 Democratic presidential nomination? Polymarket 5% Kalshi 5% in lineInformational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.