Which prediction market is best for sports betting?

Novig is ideal for sports with its peer-to-peer order book and no vig on matched plays. Polymarket also has strong liquidity for championship outcomes, while Kalshi struggles with sports liquidity outside major NFL and NBA games.

Do prediction markets charge fees?

Polymarket charges a 0.75% sports taker fee, and new users paying with fiat might face a 2 to 3 percent on-ramp cost. Novig eliminates vig on matched plays, while traditional sportsbooks build house juice into their lines.

Are prediction markets safe and regulated?

Kalshi is regulated by the CFTC, making it more accessible for compliance. Crypto-based platforms like Polymarket lack this oversight, and users worry about enforcement against insider trading and fraud.

Why do prices differ between prediction markets?

Prices diverge because underlying resolution sources, cutoff dates, and edge case rules differ. A similar question on two platforms might resolve differently depending on the specific contract terms.

Best Prediction Market Platforms Compared

Polymarket, Novig, and Kalshi serve different needs based on market focus, liquidity, and regulation. Polymarket is strong for futures and exact outcomes, but requires a crypto wallet and charges a 0.75% sports taker fee.

Novig operates a peer-to-peer sports order book with no vig on matched plays, providing sharper lines than traditional sportsbooks. Kalshi is a CFTC-regulated option built for politics and binary events, though sports liquidity outside major games is thin.

Retail users often struggle to find an edge due to sophisticated market makers and thin liquidity. Price discrepancies happen because resolution sources, cutoff dates, and edge case handling differ across platforms even for similar questions.

Best Prediction Market Platforms Compared — infographic

Prediction market platforms differ significantly in their market focus, liquidity, fee structures, and regulatory status; Polymarket and Novig are often favored for their specialized offerings and favorable odds, while Kalshi remains a dominant regulated option.

Top Prediction Market Platforms

Polymarket: It excels in futures and exact-outcome markets with strong liquidity for championships and series outcomes, making it ideal for structured bets, but new users need a crypto wallet and face a 0.75% sports taker fee. "Strong liquidity on the championship market and Finals MVP"

Novig: This platform is sports-focused with a peer-to-peer order book, meaning no vig on matched plays, and it offers comprehensive coverage across various sports bets with sharper lines than traditional sportsbooks. "No vig on matched plays (hence the name), which compounds across a 7-game series"

Kalshi: A regulated platform, Kalshi is better suited for elections, politics, and binary event contracts, but it often has thinner liquidity for individual sports games and can have wider spreads. "Kalshi was built for elections, politics, and binary event contracts."

Key Differentiators

Market Focus and Liquidity: Platforms like Polymarket are strong for big futures and exact outcomes, while Novig specializes in sports, offering deep liquidity on individual games and props; Kalshi, though regulated, often struggles with sports liquidity outside of major events. "Kalshi has the best legal US sports right now but liquidity outside of NFL/NBA gets thin."

Fee Structure and Regulation: Prediction markets like Polymarket charge a small fee per trade, whereas Novig aims for no vig on matched plays; traditional sportsbooks like DraftKings have built-in house juice, and Kalshi is CFTC-regulated. "The platform charges a small fee to facilitate trades."

User Experience and Accessibility: Crypto-based platforms like Polymarket require a wallet, adding a step for new users, while regulated platforms like Kalshi are more accessible in terms of compliance; however, traditional sportsbooks offer a more familiar interface. "Crypto-based, so new users need a wallet or pay 2-3% on an on-ramp"

Challenges and Considerations

Liquidity and "Edge": Many Users find it challenging to consistently profit from prediction markets due to the presence of sophisticated market makers and thin liquidity in many markets. "There is no meaningful edge in these markets for retail."

Market Discrepancies: Even when questions appear similar across platforms, underlying differences in resolution sources, cutoff dates, and how edge cases are handled can lead to significant price divergences. "I'd separate same question from same contract."

Regulatory Scrutiny: Prediction markets are often viewed as gambling, and some Users express concerns about the lack of robust enforcement against insider trading and potential for fraud, similar to issues in traditional financial markets. "The SEC is an absolutely gigantic enforcement organization that still has an enormous amount of trouble enforcing laws against insider trading and other shenanigans."

Are you interested in exploring platforms that specialize in niche or long-tail markets for potentially higher edges?

Best for: People looking to wager on specific event outcomes who understand the liquidity and regulatory limits of different platforms.