Polymarket vs. Kalshi

Polymarket is a crypto-native prediction market that runs on Polygon and settles in USDC, allowing anyone with a wallet to bet on real-world outcomes — from elections and sports to economic data and global events. Kalshi is a CFTC-regulated US exchange that settles in USD, operates like a traditional financial platform, and is the first prediction market legally approved to operate in the United States. That single regulatory difference — crypto-based and offshore versus USD-based and federally regulated — defines almost every other distinction between them.

As of 2025 and into 2026, both platforms have surged in mainstream attention: Polymarket drew massive global volume during major political events, while Kalshi successfully defended its CFTC status in court and expanded its market catalog. Choosing between them is not simply a matter of which is "better" — it comes down to where you live, how you hold money, and what you are trying to trade.

The table below compares Polymarket and Kalshi across the dimensions that matter most to traders, and includes Dexly — the Hyperliquid-native alternative — for reference.

The regulatory divide between Polymarket and Kalshi is the most consequential difference for most users, because it dictates who can legally participate and how funds are held.

Kalshi: The Regulated Exchange

Kalshi fought a multi-year legal battle with the CFTC and emerged with a designation as a CFTC-regulated designated contract market (DCM) — the same classification used by the CME Group. This makes it the only prediction market platform explicitly authorized to offer event contracts to US retail users. Funds on Kalshi sit in custodial accounts denominated in US dollars, backed by the regulatory protections afforded to DCM customers. New users must complete standard KYC (government ID) before trading.

The trade-off is structural centralization: Kalshi controls your funds, controls which markets exist, and operates under a regulatory framework that can restrict market types (the CFTC famously intervened on some election-related contracts during the litigation period). The platform is built for US users first; international availability is limited.

Polymarket: The Crypto-Native Market

Polymarket operates on Polygon and uses smart contracts to hold liquidity, which means no single company can "take" your funds — the protocol is the custodian. Users connect with a crypto wallet (or a Polymarket-managed embedded wallet), deposit USDC, and trade binary outcome shares on-chain. There is no KYC at the wallet level.

However, Polymarket has historically geo-blocked US users and settled a prior enforcement action with the CFTC (in 2022). The platform is effectively offshore for regulatory purposes. This creates a real legal risk for US residents who attempt to use it, even though the contract code is accessible on-chain to anyone. Non-US users, particularly in Europe, Asia, and Latin America, have used Polymarket extensively without restriction.

What Self-Custody Really Means

A subtle but important distinction: Polymarket is described as "non-custodial" because funds are held in smart contracts rather than a company treasury. However, Polymarket the company still controls which markets resolve, how they resolve, and who can access the front-end. True self-custody — where no entity can freeze your position or delist your market — requires a fully on-chain protocol like Hyperliquid's HIP-4 outcome market standard, where resolution logic is embedded in the protocol itself.

Market Catalog

Polymarket has historically had a broader and more speculative catalog — anything from "Will Bitcoin hit $200k by year-end?" to sports championships, geopolitical events, and celebrity outcomes. The permissionless feel of its interface means markets appear quickly around viral news events. Volume on Polymarket spiked dramatically during the 2024 US presidential election, reportedly exceeding hundreds of millions in weekly volume.

Kalshi's catalog is more curated and focused on macro-relevant outcomes: Federal Reserve rate decisions, CPI prints, unemployment numbers, election results, and weather events. These are closer to the economic derivatives that institutional traders recognize. Kalshi has also launched more niche verticals like sports markets, though the selection is smaller than Polymarket's.

Fee Structures

Both platforms earn revenue through fees embedded in the market structure, but the mechanics differ. Kalshi charges a per-contract fee that varies by market, applied to each trade — plus the natural bid-ask spread maintained by market makers. Polymarket charges a fee on winning positions, which means you only pay when you are right. In practice, frequent traders should calculate effective cost per trade on each platform for their specific market type rather than comparing headline rates.

Onboarding & Access

Kalshi requires a US identity document and takes a few business days for full approval. Once approved, funding via ACH or wire is straightforward for anyone with a US bank account. The experience is similar to opening a brokerage account.

Polymarket requires only a crypto wallet — either a self-managed wallet like MetaMask or a Polymarket-created embedded wallet linked to an email or Google account. Onboarding takes minutes and requires no identity verification. The barrier for international users is low; the barrier for US users is legal rather than technical.

Polymarket and Kalshi are not really competing for the same user. Kalshi is building a regulated financial exchange for US retail and institutional participants who want prediction markets within a familiar legal framework. Polymarket is building a crypto-native global information market for anyone with a wallet and an internet connection. Each is arguably the best version of what it is trying to be.

The On-Chain Alternative: Dexly on Hyperliquid

For traders who want to go further — combining the self-custody principles of crypto-native markets with the liquidity depth and execution speed of a purpose-built L1 — Hyperliquid's HIP-4 outcome market standard offers a third path. On Dexly, outcome markets settle in USDC, are fully on-chain with no company acting as intermediary, and sit alongside the perpetuals and spot markets already running on Hyperliquid L1. There are no geo-restrictions at the protocol level, no KYC, and no custodial counterparty.

This is particularly relevant for users who found Polymarket compelling in principle but were frustrated by its offshore status, or for crypto traders who already live on Hyperliquid and want prediction market exposure without bridging funds to a new platform.

Neither Polymarket nor Kalshi is "wrong" — they represent two legitimate but philosophically different visions for how public information markets should work. The prediction market space is maturing rapidly, and the competition between regulated and decentralized venues will ultimately benefit traders through better pricing, more liquid markets, and clearer legal frameworks. For now, your jurisdiction and your relationship with crypto are the deciding factors.