Prediction markets went from a niche curiosity to a crowded, competitive category in 2026, with sportsbooks, crypto exchanges, and pure-play startups all fighting for traders. The result is real choice, but also real confusion, since the platforms differ sharply on fees, the markets they offer, and where they are legally available.

Picking the right one comes down to what you want to trade and where you live. Smart Bet Insider reviews prediction markets and the platforms behind them. The sections below rank the leading sites, then compare how their fees and state coverage actually stack up.

How We Ranked Them

The rankings weigh the factors that matter most in day-to-day use: regulatory status, the breadth and depth of markets, how many states a platform serves, fee levels, and liquidity. All the sites below operate under CFTC oversight except where noted, which is what lets them reach far more states than traditional sportsbooks.

State coverage is the biggest variable, since sports event contracts remain contested in some places even where a platform is otherwise available. Fees and liquidity then separate the field for anyone trading regularly.

The Best Prediction Market Sites in 2026

Kalshi — Best Overall

Kalshi is the category leader, a CFTC-regulated exchange since 2020 with the broadest market menu, spanning politics, economics, sports, weather, and culture, and the deepest liquidity in the space. Its sports contracts reach most states, and its probability-weighted fees are small in absolute terms, making it the most complete choice for the majority of US traders.

Polymarket US — Best for Market Variety

Polymarket US launched in late 2025 as a CFTC-regulated exchange and quickly became Kalshi’s main rival. It offers strong politics, culture, and crypto coverage alongside sports, and its low flat taker fee with a maker rebate is among the cheapest of the regulated fiat platforms. It is the pick for traders who want the widest range of non-sports markets.

Robinhood Predictions — Best for Beginners

Robinhood Predictions runs on Kalshi’s engine inside the familiar Robinhood app, available in all 50 states through a standard brokerage account rather than a crypto wallet. It charges no explicit trading fees, earning instead through spreads, which makes it the simplest on-ramp for anyone who already uses Robinhood and wants a low-friction start.

Crypto.com — Best for Crypto Users

Crypto.com offers sports event contracts through its CFTC-regulated CDNA exchange, integrated directly into its main app. It suits existing Crypto.com users who want to trade Yes/No sports and finance contracts alongside their crypto, with small per-contract fees, though its state availability is narrower and contested in several markets.

DraftKings Predictions — Best for Sports Bettors

DraftKings Predictions launched across 38 states, broader than its sportsbook, with sports contracts reaching states that lack legal betting. It prices its margin into the spread and adds parlay-style combos, making it the most natural fit for DraftKings customers and sports bettors who want a familiar, betting-style experience.

Novig — Best for No-Vig Sports Trading

Novig is a CFTC-regulated, peer-to-peer exchange focused entirely on sports, where you trade against other users with no house margin. Pregame and maker trades are fee-free, and it notably never limits winning traders, though it is sports-only and unavailable in a few states including Michigan, Nevada, and Arizona.

PredictIt — Best for Political Forecasting

PredictIt is the original US prediction market, a politics-only platform with unmatched depth on down-ballot races and niche political questions. Its drawback is cost, since its roughly 15% effective fee load is the highest in the category and its per-contract limits are modest, making it a specialist tool rather than an all-purpose platform.

How the Fees Compare

Fees vary more than any other factor. Polymarket US sits at the low end with a flat taker fee and maker rebate, Robinhood charges no explicit fee at all, and Kalshi’s probability-weighted model stays small in cents on most trades. Crypto.com and DraftKings fold modest costs into per-contract fees or the spread.

At the expensive end, PredictIt stands alone, taking 10% of profits plus 5% on withdrawals. For active traders, that gap compounds fast, which is why fee structure deserves as much attention as the markets a platform lists.

How State Coverage Compares

Because these platforms are federally regulated, most reach far more states than sportsbooks, and availability depends on your state more than on any single rule. Robinhood advertises all 50 states, Kalshi and Polymarket reach most, and DraftKings covers 38, while Novig sits out a handful.

The catch is that sports event contracts specifically are blocked or contested in states like Nevada and Michigan, regardless of the platform. Coverage also shifts as litigation moves, so confirming your state in the app before funding an account is essential.

Which Site Should You Pick?

For most US traders, Kalshi is the safest all-around choice, with Polymarket US close behind for anyone who wants politics and culture markets. Robinhood suits beginners, Crypto.com and DraftKings fit crypto users and sports bettors respectively, Novig rewards no-vig sports traders, and PredictIt remains the political specialist.

Smart Bet Insider reviews prediction markets and platforms as the field keeps consolidating. Compare fees and confirm state availability before you commit, and treat every contract as speculative rather than a sure thing. None of this is financial advice, and anyone trading should be of eligible age and stay within a budget they can afford to lose.

Gambling can be a sensitive subject, and if it is becoming a problem for you or someone you know, please reach out to support resources.

Frequently Asked Questions

What is the best prediction market site in 2026?

Kalshi is the best overall for most US traders, thanks to its broad markets, wide state coverage, and deep liquidity as a CFTC-regulated exchange. Polymarket US is a strong second, especially for politics and culture markets, and Robinhood Predictions is the easiest option for beginners. The best choice depends on what you want to trade.

Which prediction market has the lowest fees?

Polymarket US and Robinhood are among the cheapest, with Polymarket charging a low flat taker fee and a maker rebate, and Robinhood charging no explicit trading fee. Kalshi’s fees are small on most trades. PredictIt is the most expensive, taking 10% of profits plus a 5% withdrawal fee.

Are prediction markets available in all states?

Most CFTC-regulated platforms reach far more states than sportsbooks, and Robinhood advertises all 50. However, sports event contracts are contested or blocked in some states, including Nevada and Michigan, and coverage varies by platform. Always confirm availability in your state before signing up.

What is the difference between Kalshi and Polymarket?

Both are CFTC-regulated exchanges, but Kalshi offers the broadest markets and deepest liquidity with fiat funding, while Polymarket US leans into politics, culture, and crypto markets at lower flat fees. Kalshi is the more well-rounded pick, and Polymarket appeals to traders who want variety and low costs.

Are prediction market sites legal in the US?

Prediction markets operated by CFTC-regulated platforms are legal at the federal level nationwide. However, sports event contracts specifically face state challenges, with some states moving to block them. The broader legal question is still unsettled and moving through the courts.