Kalshi and Polymarket price the same games differently — sometimes by several points. We watch both around the clock and alert you when the gap between them is unusually wide for that point in the schedule. The +EV screener, which compares those prices against de-vigged sharp sportsbook consensus, runs through the NFL and college football season.
Create a free accountPaid alerts aren't open yet. The board and research below are free to browse without one. An account adds market search — paste any Kalshi or Polymarket link and we'll find its counterpart and what the gap clears after costs — plus a watchlist.
| Market | Kalshi Yes | Polymarket Yes | Gap | After costs |
|---|---|---|---|---|
| Milwaukee wins | 50¢ | 49¢ | +1.0 pts | -2.0 pts |
| Milwaukee wins | 48¢ | 49¢ | −0.5 pts | 0.0 pts |
| Chicago wins | 41¢ | 39¢ | +2.0 pts | -1.0 pts |
| Philadelphia wins | 37¢ | 36¢ | +1.0 pts | -2.0 pts |
| New England wins | 77¢ | 77¢ | +0.5 pts | -1.0 pts |
| Kansas City wins | 53¢ | 53¢ | +0.5 pts | -1.0 pts |
| Los Angeles C wins | 25¢ | 26¢ | −1.0 pts | 0.0 pts |
| Atlanta wins | 47¢ | 46¢ | +1.5 pts | 0.0 pts |
| Cleveland wins | 37¢ | 37¢ | +0.5 pts | -1.0 pts |
| Las Vegas wins | 52¢ | 52¢ | +0.5 pts | -1.0 pts |
| Indianapolis wins | 24¢ | 23¢ | +1.5 pts | -1.0 pts |
| Minnesota wins | 39¢ | 38¢ | +1.5 pts | 0.0 pts |
Gap is the difference between the two venues' listed YES prices. It is not free money: crossing it costs each venue's bid/ask spread plus Kalshi's fee, which today eats every gap on the board. Why that happens. Across 258,338 readings of 142 games we have measured, 0.0% of gaps cleared the fee. See the measurement.
Prices shown are public market data from Kalshi and Polymarket, matched per-game by team. Spread = best cross-platform difference after buying opposite sides.
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