Kalshi markets: how they compare to Polymarket and PolyArb

Kalshi markets are regulated, exchange-style event contracts for macro and political outcomes. If you search "kalshi markets" you’re likely comparing platforms; Polymarket is an on-chain CLOB on Polygon and has different liquidity and settlement mechanics. For arbitrage traders, PolyArb provides a low-latency, non-custodial way to capture intra-Polymarket spreads — $99/month, 40ms latency, Telegram and Discord alerts, and a $7.62 minimum guaranteed edge per trade.

What Kalshi markets are

Kalshi is a U.S.-based exchange offering event contracts under CFTC oversight. Contracts settle to $1 for YES and $0 for NO, similar to prediction markets, but Kalshi operates within a regulated, centralized exchange model with KYC and fiat rails. Its product focus is macroeconomic and macro-political event trading rather than decentralized outcome tokens.

How Polymarket differs

Polymarket runs on Polygon and uses the Gnosis Conditional Token Framework to mint outcome tokens; settlement is mediated by the UMA optimistic oracle. Trades on Polymarket happen via a Central Limit Order Book (CLOB) and use pUSD (wrapped USDC) as the settlement asset. Polymarket is gasless for users thanks to the Relayer and supports maker-fee-free liquidity.

Why traders choose PolyArb for arbitrage

PolyArb is built to find intra-Polymarket arbitrage opportunities quickly and reliably. The service is non-custodial, live today, and advertises a $7.62 minimum guaranteed edge per trade. It runs at ~40ms latency versus ~800ms for many free bots and pushes alerts to Telegram and Discord so you can act fast without babysitting the book.

Risks and practical differences

Arbitrage spreads on any platform are mathematical but not without risk. On Polymarket you face resolution risk (UMA disputes), slippage and partial fills, fee changes, and settlement timing. Kalshi’s regulated model reduces some counterparty and regulatory uncertainty but includes KYC and different fee structures. Never assume any arb is entirely risk-free; understand the mechanics before trading.

Which to use when

If you need regulated, fiat-onramp trading in the U.S., Kalshi may fit your use case. If you want fast, on-chain markets with CLOB liquidity and programmable tokens, Polymarket is the decentralized alternative. For traders focused on intra-Polymarket arbitrage, PolyArb provides low-latency execution and monitoring designed to capture those spreads.

FAQ

Are Kalshi markets the same as Polymarket?

No. Kalshi is a regulated, centralized exchange with KYC and fiat rails. Polymarket is an on-chain CLOB on Polygon using pUSD and outcome tokens via the Gnosis CTF; settlement uses UMA.

Can I arbitrage between Kalshi and Polymarket?

Cross-platform arbitrage is possible in theory but involves different settlement rails, latency, fees, and regulatory constraints. PolyArb focuses on intra-Polymarket arbitrage, not cross-platform trades.

What does PolyArb guarantee?

PolyArb advertises a $7.62 minimum guaranteed edge per trade, non-custodial operation, 40ms latency versus ~800ms for free bots, and Telegram + Discord alerts. Users should still account for slippage, execution risk, and oracle resolution.