The reference for odds.
Polymarket and the books side by side — see who has the edge.
Widest gaps right now
Live exchange-vs-sportsbook gap data is temporarily unavailable at build time.
Open the live dashboard →The same market, side by side
Every venue that quotes "Who will win in the upcoming basketball event BOS Celtics vs PHI 76ers scheduled for November 11, 2026 at 1:00 AM UTC?" on one row. Right now the platforms differ by as much as 1.5 points on "76ers". Prices pulled from each exchange at build time.
Full comparison → • $2.3M volume| Outcome | Kalshi | Novig | Polymarket | Polymarket US | Spread |
|---|---|---|---|---|---|
| Celtics | 53% | 53% | 54% | 53% | 1.0pt |
| 76ers | 48% | 47% | 47% | 48% | 1.5pt |
Prices shown as implied probability (%). Spread is the largest gap between platforms for that outcome — a wider spread means the platforms disagree more about the likely result. A spread of 1+ point is stamped.
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All comparisons and methodLargest US market share, competitive NFL spread vig, top-rated app
CFTC-regulated exchange with the broadest contract coverage across politics, economics, and sports
Lowest wagering requirement in the market and sub-5-minute payouts
Deepest game library and the fastest crypto redemption
Widest contest variety and the most prize-pool guarantees
Widest prop selection, with multipliers up to 25x
Shared liquidity across four MSIGA states and the deepest tournament calendar
Most state coverage of any lottery courier, DraftKings-backed
| Category | Our #1 | Why | |
|---|---|---|---|
| Sportsbooks | FanDuel | Largest US market share, competitive NFL spread vig, top-rated app | Ranking |
| Prediction markets | Kalshi | CFTC-regulated exchange with the broadest contract coverage across politics, economics, and sports | Ranking |
| Online casinos | FanDuel Casino | Lowest wagering requirement in the market and sub-5-minute payouts | Ranking |
| Sweepstakes casinos | Stake.us | Deepest game library and the fastest crypto redemption | Ranking |
| DFS | DraftKings | Widest contest variety and the most prize-pool guarantees | Ranking |
| Pick'em | PrizePicks | Widest prop selection, with multipliers up to 25x | Ranking |
| Poker | WSOP.com | Shared liquidity across four MSIGA states and the deepest tournament calendar | Ranking |
| Lottery | Jackpocket | Most state coverage of any lottery courier, DraftKings-backed | Ranking |
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