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Live
Markets 130351
Platforms 2
Active Arbs 62
Volume $9.1B

Polymarket vs Kalshi Arbitrage Scanner

Live cross-platform price discrepancies, net of estimated fees. • LIVE · updated Jun 11, 2026 14:13 UTC

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Live opportunities
62
Avg spread
1391 bps
Biggest spread
7231 bps
Markets scanned
130351

Cross-platform arbitrage exists when the same real-world event is priced differently on two prediction markets. Buy on the cheaper venue, sell on the more expensive one, lock the spread regardless of outcome. All spreads below are net of estimated platform fees (~2% Polymarket taker, ~1.5% Kalshi). Run your own numbers →

Cross-Platform 62
Overround 1035
Cross-Market 0
Market Platforms Type Direction Arb (bps) Net Profit ROI Volume
Will "Toy Story 5" score at least 90 on the Rotten Tomatoes Tomatomete...
Poly Kalshi
entity BUY K → SELL P 7231 72.32¢ 278.15% $170
Lokomotiv Kuban vs. BC Zenit
Poly Kalshi
entity BUY K → SELL P 5361 53.61¢ 124.39% $16K
Will "The Odyssey" score at least 90 on the Rotten Tomatoes Tomatomete...
Poly Kalshi
entity BUY P → SELL K 4635 46.35¢ 92.70% $1
Will MOUZ qualify to the IEM Cologne 2026 playoffs?
Poly Kalshi
entity BUY K → SELL P 4111 41.11¢ 70.88% $5K
Will "The Death of Robin Hood" score at least 60 on the Rotten Tomatoe...
Poly Kalshi
entity BUY K → SELL P 3169 31.70¢ 48.77% $74
Legia Warszawa vs. Basket Zielona Gora
Poly Kalshi
entity BUY K → SELL P 2786 27.86¢ 40.91% $8K
Will world GDP growth be 3.1% in 2026?
Poly Kalshi
entity BUY K → SELL P 2548 25.48¢ 34.53% $470
Will world GDP growth be 3.0% in 2026?
Poly Kalshi
entity BUY K → SELL P 2434 24.35¢ 32.51% $481
Will Paul Waring finish in the Top 5 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 2151 21.51¢ 27.58% $0
Will Paul Waring finish in the Top 10 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 2146 21.46¢ 27.50% $0
Arka Gdynia vs. Dziki Warszawa
Poly Kalshi
entity BUY K → SELL P 2065 20.65¢ 27.50% $2K
Will Paul Waring finish in the Top 20 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 2053 20.53¢ 25.99% $0
Will Sam Altman be TIME Person of the Year 2026?
Poly Kalshi
entity BUY K → SELL P 2052 20.52¢ 26.14% $60
Will Daniel Brown finish in the Top 5 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 1999 19.99¢ 25.14% $1
Will Takumi Kanaya finish in the Top 5 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 1999 19.99¢ 25.14% $0
Will "Toy Story 5" score at least 85 on the Rotten Tomatoes Tomatomete...
Poly Kalshi
entity BUY K → SELL P 1988 19.89¢ 25.83% $59
Will Sam Ryder finish in the Top 5 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 1896 18.96¢ 23.55% $0
Maccabi Raanana vs. Hapoel Galil Elyon
Poly Kalshi
entity BUY K → SELL P 1859 18.59¢ 24.11% $4K
Will Lee Hodges finish in the Top 5 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 1842 18.42¢ 22.74% $0
Will Luke Clanton finish in the Top 5 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 1797 17.98¢ 22.06% $0
Will Karl Vilips finish in the Top 10 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 1787 17.88¢ 21.94% $0
Will Garrick Higgo finish in the Top 5 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 1744 17.44¢ 21.27% $0
Will "The Odyssey" score at least 60 on the Rotten Tomatoes Tomatomete...
Poly Kalshi
entity BUY K → SELL P 1619 16.20¢ 20.25% $409
Will Karl Vilips finish in the Top 5 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 1558 15.58¢ 18.55% $6
Will Matt Wallace finish in the Top 10 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 1518 15.18¢ 18.07% $0
Will Lee Hodges finish in the Top 10 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 1474 14.74¢ 17.43% $0
Will PARIVISION qualify to the IEM Cologne 2026 playoffs?
Poly Kalshi
entity BUY K → SELL P 1465 14.65¢ 17.24% $743
Will Matthieu Pavon finish in the Top 20 at the 2026 RBC Canadian Open...
Poly Kalshi
entity BUY K → SELL P 1463 14.64¢ 17.33% $68
Will Daniel Brown finish in the Top 10 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 1371 13.71¢ 16.03% $0
Will Kevin Roy finish in the Top 5 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 1161 11.61¢ 13.19% $0
Will Matthieu Pavon finish in the Top 5 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 1117 11.17¢ 12.62% $0
Will Jacob Bridgeman finish in the Top 5 at the 2026 RBC Canadian Open...
Poly Kalshi
entity BUY K → SELL P 919 9.20¢ 10.22% $0
Will Thorbjorn Olesen finish in the Top 5 at the 2026 RBC Canadian Ope...
Poly Kalshi
entity BUY K → SELL P 911 9.11¢ 10.07% $0
Will Chris Kirk finish in the Top 5 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 911 9.11¢ 10.07% $0
Will Matt Wallace finish in the Top 5 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 857 8.57¢ 9.42% $0
Will "Supergirl" score at least 60 on the Rotten Tomatoes Tomatometer?
Poly Kalshi
entity BUY P → SELL K 854 8.54¢ 9.70% $447
Will William Mouw finish in the Top 5 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 813 8.13¢ 8.89% $0
Will Stephan Jaeger finish in the Top 5 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 813 8.13¢ 8.89% $0
Will Sudarshan Yellamaraju finish in the Top 10 at the 2026 RBC Canadi...
Poly Kalshi
entity BUY K → SELL P 767 7.68¢ 8.39% $0
Will Michael Brennan finish in the Top 10 at the 2026 RBC Canadian Ope...
Poly Kalshi
entity BUY K → SELL P 767 7.68¢ 8.39% $25
Will William Mouw finish in the Top 20 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 645 6.45¢ 6.97% $25
Will Karl Vilips finish in the Top 20 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 635 6.36¢ 6.84% $32
Toronto Tempo vs. Washington Mystics
Poly Kalshi
entity BUY K → SELL P 609 6.09¢ 6.62% $37
Will "The Odyssey" score at least 80 on the Rotten Tomatoes Tomatomete...
Poly Kalshi
entity BUY P → SELL K 529 5.30¢ 5.89% $20
Will Belgium score the most goals at the 2026 FIFA World Cup?
Poly Kalshi
entity BUY P → SELL K 526 5.27¢ 5.60% $8K
Pavel Šulc: 1+ assists
Poly Kalshi
entity BUY P → SELL K 491 4.92¢ 5.23% $22
Will world GDP growth be 3.2% in 2026?
Poly Kalshi
entity BUY K → SELL P 458 4.59¢ 4.81% $2K
Will Keith Mitchell finish in the Top 5 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 439 4.40¢ 4.63% $0
Will Viktor Hovland finish in the Top 5 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 429 4.30¢ 4.53% $0
Will Luke Clanton finish in the Top 20 at the 2026 RBC Canadian Open?
Poly Kalshi
entity BUY K → SELL P 386 3.86¢ 4.04% $0
Market Platform Overround % Best Yes Best No Volume

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Market A Market B Platform Spread (bps) Confidence Volume

Cross-market arb data will load automatically

How cross-platform arbitrage works

What is a "bps" spread?

One basis point equals 0.01¢ per contract. A 100 bps spread means you lock 1¢ of profit on every $1 pair you trade, after fees. Bigger spread, bigger edge.

How is ROI calculated?

ROI is net profit divided by total capital deployed (cost of the YES leg plus the NO leg of the hedge). It is the return on the money you actually lock up, not on contract notional.

What does "direction" mean?

"BUY K → SELL P" means buy the YES contract on Kalshi and sell YES on Polymarket (or equivalently buy NO on Polymarket). The opposite direction is the inverse pair.

Why do spreads exist?

Polymarket and Kalshi serve different user bases, settle differently, and update at different speeds. The price gap is the cost of that friction. Scanners surface it; execution is on you.