Polymarket vs Kalshi: which prediction market is better?

A comprehensive side-by-side comparison of the two largest prediction market platforms in 2026 — covering markets, fees, regulation, UX, liquidity, and supported countries.

Polymarket and Kalshi are the two dominant prediction market platforms, but they take fundamentally different approaches. Polymarket is a crypto-native platform built on Polygon, offering permissionless global access with USDC settlement and deep liquidity on political and crypto markets. Kalshi is a CFTC-regulated exchange based in the United States, offering USD settlement through traditional banking rails with a focus on regulatory compliance. In terms of market selection, Polymarket leads with thousands of active markets across politics, crypto, sports, entertainment, and world events. Kalshi offers fewer markets but has the regulatory advantage of being a designated contract market (DCM) under US law, meaning US participants trade with full legal clarity. Fee structures differ as well — Polymarket charges no trading fees but earns through the spread, while Kalshi charges explicit per-contract fees that vary by market type. Liquidity is a critical differentiator. Polymarket consistently has deeper order books on high-profile political markets, often reaching millions of dollars in open interest on a single event. Kalshi's liquidity has grown steadily but remains thinner on niche markets. For mobile experience, both offer web apps, but Kalshi has a native iOS app while Polymarket relies on a progressive web app. On settlement, Polymarket resolves on-chain with transparent oracle sources, while Kalshi uses internal resolution with regulatory oversight. PolyGram aggregates the best features of both ecosystems — deep Polymarket liquidity, professional trading tools, copy-trading, and portfolio analytics — all through an intuitive interface designed for both beginners and experienced traders.

Trade on PolyGram →