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 Kamala Harris be first this list to declare for 2028 United States preside…
3%
Kalshi
Will Gavin Newsom be first this list to declare for 2028 United States presiden…
16%
Kalshi
Will Josh Shapiro be first this list to declare for 2028 United States presiden…
4%
Kalshi
Will Mark Cuban announce a run for President of the United States in 2028?
8%
Kalshi
Will Marjorie Taylor Greene announce a run for President of the United States i…
11%
Kalshi
Will Republican win the Presidency in 2028?
41%
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.