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 Democratics win the Senate race in Ohio?
46%
Kalshi
Will Republicans win the Senate race in Ohio?
54%
Kalshi
Will Democratics win the Senate race in Iowa?
33%
Kalshi
Will Democratics win the Senate race in Kansas?
28%
Kalshi
Will Republicans win the Senate race in Florida?
83%
Kalshi
Will Republicans win the Senate race in Idaho?
89%
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.