Sports betting and prediction markets look similar — both let you profit from event outcomes. But the mechanics, fees, and legal landscape are very different.
| Sports Betting | Prediction Markets | |
|---|---|---|
| Counterparty | The bookmaker | Other traders |
| Pricing | Fixed odds set by house | Market-driven |
| Fees | 5-10% vig built into odds | 1-3% spread + gas |
| Cash out | Limited, at bookmaker's price | Sell shares anytime |
| Regulation | State/country licensed | Varies (Kalshi CFTC, Polymarket offshore) |
Bookmakers don't rely on being right — they rely on the vig (commission) built into both sides of a bet. A market priced at -110 / -110 means you must win 52.4% just to break even.
In prediction markets, prices come from traders. You buy "Yes" shares for a sports outcome at a market price and sell anytime. Typical spreads are 1-3% — much tighter than bookmaker vig.
No. Sports betting is against a bookmaker. Prediction markets let you trade against other users with market-driven prices.
Depends on jurisdiction. Kalshi offers regulated sports contracts in the US. Polymarket operates globally.
Prediction markets typically. Sportsbook vig is 5-10%; prediction market spreads are often 1-3%.
Explore prediction markets
Tighter spreads, trader-vs-trader pricing.