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 Democrats win the Senate race in Pennsylvania?
69%
Kalshi
Will Democratics win the Senate race in Wisconsin?
63%
Kalshi
Will Republicans win the Senate race in Iowa?
63%
Kalshi
Will Democratics win the Senate race in Nevada?
60%
Kalshi
Will Democratics win the Senate race in Ohio?
46%
Kalshi
Will Democratics win the Senate race in Arizona?
75%
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.