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Prediction Market Arbitrage Scanner

When the same real-world event is priced differently on Kalshi and Polymarket, that spread is an arbitrage signal. ProbSights' arbitrage scanner tracks these spreads live across matched markets.

How it works

• Matches equivalent events across venues
• Surfaces the current price spread and each leg's price
• Realtime webhook + email alerts on the Trader plan

Related

• Polymarket ↔ Kalshi arbitrage
• How prediction market arbitrage works

Related guides

• Cross-Venue Prediction Market Data API
• Kalshi Historical Data API — Orderbook & Trade History
• Kalshi Whale Trade Tracker
• Polymarket CLOB Historical Data

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