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Data from Polymarket, Kalshi, Limitless & Hyperliquid. Some outbound platform links are referral links — we may earn a commission when you sign up or trade, at no cost to you.
Home/Compare Markets

Polymarket vs Kalshi: Compare Odds

Side-by-side odds comparison for 42 prediction markets listed on both platforms. See where traders disagree, find cross-platform price spreads, and spot potential arbitrage on elections, sports, economics, and more.

ActiveResolved
Matched Events
42
Combined Volume
$4.36B
Avg Max Spread
4.2pp
Spreads >3pp
10
Democratic Presidential Nominee 2028

Democratic Presidential Nominee 2028

✓ 98%politics2028
PolymarketKalshi
Spread
3.5pp
Volume
$1.40B
Republican Presidential Nominee 2028

Republican Presidential Nominee 2028

✓ 98%politics2028
Polymarket

How Cross-Platform Matching Works

  • • We automatically identify markets asking about the same real-world event across Polymarket and Kalshi
  • • Only matches with ≥95% confidence are shown — each one is verified
  • • Outcome names are mapped between platforms (e.g., “J.D. Vance” ↔ “JD Vance”)
  • • Spread = difference between platform prices for the same outcome
  • • Prices update every 30 minutes from live API data
View Arbitrage Opportunities →Polymarket vs Kalshi: Full Comparison →
Kalshi
Spread
3.2pp
Volume
$729.47M
2028 US Presidential Election

2028 US Presidential Election

✓ 98%politics2028
PolymarketKalshi
Spread
4.0pp
Volume
$717.81M
F1 Drivers' Championship

F1 Drivers' Championship

✓ 98%sports
PolymarketKalshi
Spread
2.9pp
Volume
$206.92M
LeBron James Next NBA Team

LeBron James Next NBA Team

✓ 85%sports2026
PolymarketKalshi
Spread
0.6pp
Volume
$194.96M
2026 Brazilian Presidential Election

2026 Brazilian Presidential Election

✓ 99%politics2026
PolymarketKalshi
Spread
4.5pp
Volume
$116.42M
Will the Fed make a decision in July 2026?

Will the Fed make a decision in July 2026?

✓ 97%economics2026
PolymarketKalshi
Volume
$99.01M
Venezuela Head of State on December 31, 2026

Venezuela Head of State on December 31, 2026

✓ 85%politics2026
PolymarketKalshi
Spread
5.5pp
Volume
$98.95M
California Governor Election Winner

California Governor Election Winner

✓ 92%other
PolymarketKalshi
Spread
1.1pp
Volume
$89.24M
2027 NFL Champion

2027 NFL Champion

✓ 95%sports2027
PolymarketKalshi
Spread
1.5pp
Volume
$86.31M
2026 MLB World Series Champion

2026 MLB World Series Champion

✓ 98%sports2026
PolymarketKalshi
Spread
0.5pp
Volume
$70.72M
US government confirmation of alien existence

US government confirmation of alien existence

✓ 99%politics2027
PolymarketKalshi
Volume
$68.94M
When will Bitcoin hit $150k?

When will Bitcoin hit $150k?

✓ 97%other
PolymarketKalshi
Volume
$60.38M
Will Trump Leave Office Early?

Will Trump Leave Office Early?

✓ 95%politics2026
PolymarketKalshi
Volume
$59.09M
Number of Fed rate cuts in 2026

Number of Fed rate cuts in 2026

✓ 90%economics2026
PolymarketKalshi
Volume
$50.61M
Acquisition of Greenland by the United States

Acquisition of Greenland by the United States

✓ 85%politics2027
PolymarketKalshiLimitless
Spread
1.0pp
Volume
$39.25M
Tech Layoffs Up or Down in 2026?

Tech Layoffs Up or Down in 2026?

✓ 97%other2026
PolymarketKalshi
Spread
1.7pp
Volume
$31.45M
F1 Constructors Championship 2026

F1 Constructors Championship 2026

✓ 85%sports2026
KalshiPolymarket
Spread
1.0pp
Volume
$29.27M
Nobel Peace Prize Winner 2026

Nobel Peace Prize Winner 2026

✓ 85%science2026
PolymarketKalshi
Spread
2.5pp
Volume
$23.52M
MLS Cup Winner 2026

MLS Cup Winner 2026

✓ 80%sports2026
PolymarketKalshi
Spread
2.5pp
Volume
$20.33M
2027 NBA Champion

2027 NBA Champion

✓ 90%sports2027
PolymarketKalshi
Spread
1.9pp
Volume
$18.74M
2026 United States Congressional Elections

2026 United States Congressional Elections

✓ 85%politics2026
PolymarketKalshi
Volume
$18.35M
2026 United States Midterm Elections

2026 United States Midterm Elections

✓ 85%politics2026
PolymarketKalshi
Volume
$17.03M
Ballon d'Or Winner 2026

Ballon d'Or Winner 2026

✓ 85%sports2026
PolymarketKalshi
Spread
2.2pp
Volume
$14.31M
2026 US House of Representatives Control

2026 US House of Representatives Control

✓ 90%politics2026
PolymarketKalshi
Volume
$10.83M
Which party will win the U.S. Senate in 2026?

Which party will win the U.S. Senate in 2026?

✓ 95%politics2026
PolymarketKalshi
Spread
0.5pp
Volume
$9.33M
Pro Football: 2027 NFC Champion

Pro Football: 2027 NFC Champion

✓ 85%sports2027
PolymarketKalshi
Spread
0.5pp
Volume
$9.04M
Maxx Crosby Next Team 2026

Maxx Crosby Next Team 2026

✓ 85%sports2026
PolymarketKalshi
Spread
2.1pp
Volume
$8.91M
Bitcoin Reaching $200,000 by December 31, 2026

Bitcoin Reaching $200,000 by December 31, 2026

✓ 85%crypto2026
PolymarketKalshi
Volume
$8.16M
MLB 2026 American League Champion

MLB 2026 American League Champion

✓ 85%sports2026
PolymarketKalshi
Spread
1.5pp
Volume
$7.30M
Texas Senate Election 2026

Texas Senate Election 2026

✓ 85%politics2026
PolymarketKalshi
Volume
$6.69M
2026 National League Championship

2026 National League Championship

✓ 85%sports2026
PolymarketKalshi
Spread
4.5pp
Volume
$6.59M
2027 AFC Championship Winner

2027 AFC Championship Winner

✓ 90%sports2027
PolymarketKalshi
Spread
2.0pp
Volume
$5.88M
Warner Bros. Acquisition: Who Will Close the Deal by July 2027?

Warner Bros. Acquisition: Who Will Close the Deal by July 2027?

✓ 85%economics2027
PolymarketKalshi
Spread
5.0pp
Volume
$5.13M
U.S. Senate composition after 2026 midterm elections

U.S. Senate composition after 2026 midterm elections

✓ 85%politics2026
PolymarketKalshi
Spread
2.0pp
Volume
$4.47M
MLB 2026 AL MVP

MLB 2026 AL MVP

✓ 85%sports2026
PolymarketKalshi
Spread
7.7pp
Volume
$4.39M
Michigan Democratic Senate Primary 2026

Michigan Democratic Senate Primary 2026

✓ 85%politics2026
PolymarketKalshi
Spread
1.5pp
Volume
$3.48M
Zelenskyy and Putin Meet Before 2029

Zelenskyy and Putin Meet Before 2029

✓ 85%politics2029
PolymarketKalshi
Volume
$3.26M
2026 NL Cy Young Award Winner

2026 NL Cy Young Award Winner

✓ 85%sports2026
PolymarketKalshi
Spread
24.2pp
Volume
$2.85M
MLB 2026 AL Cy Young Award Winner

MLB 2026 AL Cy Young Award Winner

✓ 85%sports2026
PolymarketKalshi
Spread
32.9pp
Volume
$2.77M
MLB 2026 NL Central Division Champion

MLB 2026 NL Central Division Champion

✓ 85%sports2026
PolymarketKalshi
Spread
1.0pp
Volume
$2.34M
2026 WNBA Champion

2026 WNBA Champion

✓ 90%sports2026
PolymarketKalshi
Volume
$1.97M