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Kalshi trading vs Polymarket: what traders should know

If you searched for "kalshi trading" you’re likely comparing regulated event exchanges to decentralised markets. Kalshi is a CFTC-regulated exchange that targets U.S. retail and institutional customers with fiat rails and KYC. Polymarket is a decentralised prediction-market exchange on Polygon using pUSD and UMA; PolyArb is a third‑party arbitrage bot built for Polymarket traders that provides low-latency execution and a $7.62 minimum guaranteed edge.

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What Kalshi is and how it differs

Kalshi is a centralized, CFTC-regulated event exchange that runs like a traditional futures-style trading venue. It requires KYC for U.S. customers and uses fiat settlement rather than on‑chain tokens. Because it’s regulated, Kalshi offers product accessibility inside the U.S. that Polymarket’s public site does not.

By contrast, Polymarket is a decentralised CLOB on Polygon that settles in pUSD and uses UMA for resolution. Polymarket is geo-restricted in many jurisdictions; Polymarket trades are gasless for users thanks to the Relayer, and markets are represented by ERC-1155 outcome tokens under the Gnosis CTF.

Why traders compare the two

Traders look for liquidity, fees, speed, and available markets. Kalshi’s regulated framework and fiat rails attract U.S. traders who need on‑ramp compliance. Polymarket attracts crypto-native traders looking for a broader global market set and composability with on‑chain tooling.

If your goal is arbitrage on Polymarket specifically, cross-platform comparisons matter for opportunity sourcing, but the mechanics differ: Polymarket’s CLOB, tick sizes, and CTF token flows change how you capture spreads compared with a centralized order book.

How PolyArb fits in

PolyArb is an arbitrage product built for Polymarket traders. It’s non-custodial, live today, priced at $99/month, and offers 40 ms latency vs ~800 ms for typical free bots. PolyArb sends Telegram and Discord alerts and guarantees a $7.62 minimum edge per trade, while still exposing the on‑chain mechanics so you can perform splits, merges, and redemptions yourself.

Remember that arbitrage spreads are mathematical but not without risk: resolution disputes (UMA), partial fills and slippage, settlement timing, fee changes, and smart‑contract risk can all affect outcomes. PolyArb automates detection and execution but does not remove those fundamental risks.

Which should you use?

Choose Kalshi if you need a regulated, KYC’d venue inside jurisdictions Kalshi serves, especially U.S. retail traders who require fiat settlement and CFTC oversight. Choose Polymarket when you want decentralised markets, on‑chain outcome tokens, and the ability to use tools like PolyArb to capture intra-market arbitrage.

If you trade Polymarket, PolyArb is positioned to lower latency and surface intra-market and combinatorial opportunities quickly. It’s a tool for execution and monitoring, not a substitute for understanding market and resolution risks.

Start capturing Polymarket arbitrage with PolyArb

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FAQ

Is Kalshi the same as Polymarket?
No. Kalshi is a CFTC‑regulated, centralized exchange with fiat rails and required KYC for U.S. users. Polymarket is a decentralised prediction-market exchange on Polygon that uses pUSD and UMA for resolution.
Can I arbitrage between Kalshi and Polymarket?
Cross-platform arbitrage is conceptually possible but out of scope for PolyArb. Differences in settlement rails, timing, fees, and market definitions make cross-platform trades complex and often slow to settle.
What does PolyArb do for Polymarket traders?
PolyArb detects intra-market arbitrage opportunities on Polymarket, executes low-latency trades, and sends alerts via Telegram and Discord. It’s non-custodial, costs $99/month, offers ~40 ms latency, and guarantees a $7.62 minimum edge per trade.
Are there risks using PolyArb on Polymarket?
Yes. Risks include UMA resolution disputes, slippage and partial fills, settlement timing, fee changes, and smart-contract risk. PolyArb automates execution but cannot eliminate these fundamental risks.

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