Best Prediction Market Sites

Prediction markets have gone from academic curiosity to mainstream in about three years. There are now multiple platforms where you can trade contracts on real-world events — politics, weather, economics, sports, culture. The question isn't whether prediction markets are interesting anymore. It's which platform to use.

Kalshi is a CFTC-regulated exchange based in the US. It operates as a designated contract market, which means it's regulated like a financial exchange, not a casino. You deposit real USD, buy and sell event contracts priced between $0 and $1, and withdraw real USD. Contracts settle at $1 if the event happens, $0 if it doesn't. Minimum trades are in the cents — a single dollar can buy multiple contracts on the same event.

Kalshi's market catalog covers elections, economics (Fed rate decisions, GDP, inflation), weather, tech milestones, and more. They added election markets after winning a federal court battle with the CFTC in 2024. The interface is clean, the fees are built into the spread, and the regulatory framework is the strongest of any US prediction market.

Polymarket is a crypto-based prediction market that operates on the Polygon blockchain. It gained massive attention during the 2024 election cycle, with hundreds of millions of dollars in trading volume on presidential race contracts. The platform is officially not available to US users — it blocks US-based accounts — though enforcement of geographic restrictions on crypto platforms is an ongoing regulatory question.

For non-US users, Polymarket offers a wide range of markets with high liquidity on popular events. Deposits are in USDC (a stablecoin), and the platform takes no explicit fees — revenue comes from the spread. The market selection tends to skew toward politics, tech, and culture.

Metaculus, Good Judgment Open, and Manifold Markets are forecasting platforms, not real-money exchanges. You make predictions and earn reputation points, not cash. They're excellent for building forecasting skills and tracking calibration. If you care about being right more than about getting paid, these are worth your time. If you want skin in the game, they're a practice run.

Dollar Bets primarily links to Kalshi because it's the regulated US platform where a literal dollar gets you into real contracts on real events. We're an editorial site, not a platform review service — we scan markets daily and surface the interesting ones. If you're starting from zero and want to put $1 on something weird happening in the world, Kalshi is where we'd point you.