Think OddsJam — but for prediction markets.
Prediction market arbitrage,
found for you.
CrossOdds scans Kalshi and Polymarket in real-time for guaranteed-profit opportunities — where buying both sides costs less than the $1 payout.
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What is prediction market arbitrage?
When two platforms price the same event differently, you can buy Yes on one and No on the other for less than $1 combined. One side always pays $1 — the difference is yours.
"Will the US enter a recession in 2026?"
Buy
Buy
Total cost per pair
93¢
Payout (always)
$1.00
Step 01
We scan markets
Continuously polls Kalshi and Polymarket for every active Yes/No market.
Step 02
We match questions
Embedding models semantically match the same question across platforms.
Step 03
You lock in profit
When Yes + No costs less than $1 across platforms, the spread is yours.
Start finding free money.
Browse live arbitrage opportunities across Kalshi and Polymarket. Free tier — no credit card required.