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 the Republican party win the Senate in 2028?
48%
Kalshi
Will Republicans win the Senate race in Iowa?
63%
Kalshi
Will the Republican party win the House, the Republican party win the Senate, a…
14%
Kalshi
Will Republicans win the Senate race in Kansas?
74%
Kalshi
Will Republicans win the Senate race in Utah?
83%
Kalshi
Will Republicans win the Senate race in South Carolina?
79%
Change ×
Will there be a Hormuz agreement and the Republicans win the Senate?
3%
▲ +2.0pt
Vol $104.3K today · $845K total
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.