Polymarket vs. Kalshi
Compare markets
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.
Possibly the same event, on the other platform
Kalshi
Will Jon Ossoff be the Democratic Presidential nominee in 2028?
16%
Kalshi
Who will win the 2028 United States vice presidential election?
4%
Kalshi
Will Jon Ossoff and Pete Buttigieg be the 2028 Democratic Presidential ticket?
0%
Kalshi
Will Jon Ossoff and Marco Rubio be the 2028 Democratic and Republican president…
4%
Kalshi
Will Kamala Harris be first this list to declare for 2028 United States preside…
3%
Kalshi
Will Pete Buttigieg be first this list to declare for 2028 United States presid…
33%
Change ×
Will Jon Ossoff win the 2028 US Presidential Election?
9%
– 0.3pt
Vol $31.4K today · $6M total
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.