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kalshi com vs Polymarket: What traders should know

If you searched for "kalshi com" you’re likely comparing prediction-market platforms. Kalshi is a CFTC-regulated exchange for event contracts; Polymarket is a decentralised prediction-market on Polygon using pUSD and the Gnosis CTF. For arbitrage traders, the differences that matter are latency, market structure, fees, and programmatic access. PolyArb is a Polymarket-focused arbitrage bot that runs live today and targets intra-Polymarket spreads with a $7.62 minimum guaranteed edge.

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What Kalshi is — and how it differs

Kalshi is a centrally regulated, CFTC-cleared exchange offering binary event contracts that settle to $1 or $0. It operates under US regulatory constraints, KYC, and fiat rails, which shapes product availability and user access. Polymarket, by contrast, is a decentralised CLOB on Polygon that uses pUSD and UMA for resolution, with different fee and liquidity profiles.

Why arbitrageurs care about market structure

Arbitrage depends on tight, fast markets and accessible programmatic APIs. Polymarket exposes a CLOB API and a Market WebSocket for realtime book data; maker fees are zero and taker fees vary by category. That combination enables bots to detect intra-market edges such as complementary outcomes whose best-ask sum is below $1.00.

How PolyArb fits into the picture

PolyArb is a paid service ($99/month) focused on Polymarket intra-market arbitrage. It offers ~40ms latency versus ~800ms for free bots, Telegram and Discord alerts, and a non-custodial architecture. The product advertises a $7.62 minimum guaranteed edge per trade while you execute split/merge flows and route orders through the CLOB.

Risks you must still consider

No automated approach is without risk. Polymarket-specific risks include resolution disputes via UMA, settlement timing, slippage and partial fills, fee changes, smart-contract risk, and geo-restrictions that may limit order placement. PolyArb helps detect and execute edges faster, but these platform and market risks remain.

Start capturing Polymarket edges with PolyArb

Subscribe to PolyArb for $99/month to get 40ms latency, Telegram and Discord alerts, and non-custodial execution focused on intra-Polymarket arbitrage. Try it live today.

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FAQ

Is Kalshi the same as Polymarket?
No. Kalshi is a CFTC-regulated, centralized exchange for event contracts, while Polymarket is a decentralised prediction-market on Polygon using pUSD and Gnosis CTF with UMA for resolution.
Can I use PolyArb on Kalshi?
PolyArb is designed specifically for Polymarket intra-market arbitrage. It does not integrate with Kalshi, which has a different API and regulatory model.
Does PolyArb guarantee profits?
PolyArb advertises a $7.62 minimum guaranteed edge per trade and low latency to capture opportunities, but trading still carries platform and market risks such as slippage, resolution disputes, and settlement timing.
Do I need US KYC to use Polymarket?
Polymarket blocks new orders from the United States on polymarket.com; a separate CFTC-regulated pathway exists that requires KYC. Geo-restrictions apply in many jurisdictions—do not use VPN workarounds.

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