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World Series 2026 champion: Polymarket vs Kalshi odds

Updated September 24, 2026 · refreshed twice a day

Polymarket prices Los Angeles Dodgers at 30.5% and Kalshi at 31.6%. The widest gap is on Cleveland Guardians: 3.8% on Polymarket vs 4.9% on Kalshi (1.2 points). Prices checked September 24, 2026, before fees.

OutcomePolymarketKalshiGapCheaper to buy Yes
Los Angeles Dodgers30.5%31.6%-1.1 ptsPolymarket
Milwaukee Brewers15.4%15.2%+0.2 ptsKalshi
Tampa Bay Rays11.7%11.1%+0.6 ptsKalshi
New York Yankees8.5%7.4%+1.1 ptsKalshi
Atlanta Braves5.2%6.2%-1.0 ptsPolymarket
Boston Red Sox5.2%5.7%-0.4 ptsPolymarket
San Diego Padres5.3%5.6%-0.2 ptsPolymarket
Philadelphia Phillies4.5%5.5%-1.0 ptsPolymarket
Cleveland Guardians3.8%4.9%-1.2 ptsPolymarket
Chicago Cubs4.5%4.2%+0.2 ptsKalshi

Gap = Polymarket minus Kalshi, in percentage points, before fees. Polymarket odds page for this event · Kalshi odds for this event on Kalshi View

Frequently asked questions

Is Polymarket or Kalshi cheaper for World Series 2026 champion?

Polymarket prices Los Angeles Dodgers at 30.5% and Kalshi at 31.6%. The widest gap is on Cleveland Guardians: 3.8% on Polymarket vs 4.9% on Kalshi (1.2 points). Prices checked September 24, 2026, before fees.

Why do Polymarket and Kalshi prices differ?

They are separate order books with different traders, fees and access rules, so the same outcome can trade a few points apart. Fees, deposit and withdrawal costs and settlement rules can erase a small gap.

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