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Prediction Markets Kalshi: How it Compares to Polymarket

If you searched “prediction markets Kalshi” you’re likely comparing core platforms. Kalshi is a CFTC-regulated exchange offering event contracts; Polymarket is a decentralized CLOB on Polygon that uses UMA for resolution. For traders who want to arbitrage intra-market spreads on Polymarket, PolyArb is a specialised bot that runs today: $99/month, 40ms latency, Telegram and Discord alerts, non-custodial access, and a $7.62 minimum guaranteed edge per trade.

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What Kalshi is and how it differs

Kalshi is a centralized, CFTC-regulated exchange that lists event contracts with fiat rails and KYC for US customers. Its regulatory model focuses on binary event markets cleared under exchange rules and traditional custody.

Polymarket, by contrast, runs on Polygon as a decentralised CLOB using pUSD and the Gnosis CTF for outcome tokens, with resolutions reported via UMA. The decentralised design changes custody, settlement mechanics, and fee structures compared with Kalshi.

Where Polymarket is stronger for arbitrage

Polymarket’s CLOB and ERC-1155 outcome tokens let you buy complete sets via split/merge operations and exploit intra-market pricing inefficiencies (binary and combinatorial). The market microstructure — tick sizes, maker-free fees, and gasless relayer execution — creates regular short-lived spreads that arbitrageurs capture.

These spreads are often fleeting; speed, reliable order placement, and accounting for taker fees and UMA resolution risk are essential. That’s precisely the use case PolyArb targets.

How PolyArb fits your workflow

PolyArb is a non-custodial arbitrage bot built for Polymarket intra-market opportunities. It advertises 40ms latency (versus ~800ms for many free bots), Telegram and Discord alerts, and a $7.62 minimum guaranteed edge per trade for subscribers at $99/month.

You still manage your wallet and funds; PolyArb routes orders through the CLOB while handling rapid detection and execution. Remember there are risks: UMA disputes, settlement timing, partial fills, and slippage.

Which platform should you use

If you need regulated, fiat-settled event contracts and U.S. retail access, Kalshi may be the natural choice. If your focus is decentralised liquidity, tokenised outcome mechanics, and intra-market arbitrage opportunities, Polymarket with a specialised tool like PolyArb is designed for that workflow.

Decide on regulatory needs, custody preferences, and whether you require low-latency arbitrage automation before choosing a platform or bot.

See PolyArb in action

Try PolyArb for $99/month to get 40ms latency, non-custodial execution, Telegram and Discord alerts, and a $7.62 minimum guaranteed edge per trade.

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FAQ

Is Kalshi the same as Polymarket?
No. Kalshi is a CFTC-regulated centralized exchange for event contracts; Polymarket is a decentralised prediction market on Polygon using pUSD and the Gnosis CTF with UMA for resolution.
Can I arbitrage between Kalshi and Polymarket?
Cross-platform arbitrage is possible in theory but out of scope for PolyArb. Differences in settlement rails, regulation, and timing make cross-platform trades more complex and slower to capture than intra-Polymarket opportunities.
What risks should I know when arbitraging on Polymarket?
Key risks include UMA resolution disputes, settlement timing, slippage and partial fills, taker fees, and smart-contract risk. No trade is unconditional risk-free; the spread math must be weighed against these risks.

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