Polymarket vs. Kalshi
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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.
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Will Kirk Cousins announce his retirement before the 2029-30 NFL season?
55%
▲ +6.0pt
Vol $60 today · $471 total
Possibly the same event, on the other platform
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.