Arbitrage
Polymarket vs Kalshi spread scanner
Compare similar prediction market events across Polymarket and Kalshi, then evaluate price gaps with liquidity, access, fee, and settlement caveats in view.
Scanner focus
Spreads
Highlight price gaps on similar event outcomes.
Venue context
Rules matter
Event wording, access, fees, and settlement can differ.
Plan
Pro
Kalshi arbitrage is part of the Pro feature set.
Find gaps
Surface comparable events where Polymarket and Kalshi participant pools imply different probabilities.
- •Matched-event view
- •Yes/No price comparison
- •Gap ranking
Check tradability
A spread is only useful after reviewing access rules, liquidity, fees, limits, and time-to-settlement.
- •Liquidity caveats
- •Fee awareness
- •Access checks
Avoid false matches
Similar events can settle differently, so wording and resolution rules need to stay part of the workflow.
- •Settlement wording
- •Expiry differences
- •Manual review flags
Sample spread scanner
Static preview of cross-venue comparison fields.
| Event | Polymarket | Kalshi | Liquidity | Gap |
|---|---|---|---|---|
| Fed cut by June | 61¢ | 67¢ | High | 6.0% |
| BTC all-time high | 44¢ | 48¢ | Medium | 4.0% |
| CPI above forecast | 52¢ | 55¢ | Thin | 3.0% |
| Recession this year | 28¢ | 32¢ | Medium | 4.0% |
Use spreads as research signals
Polyanalytics surfaces candidates; traders still need to review venue rules, liquidity, and execution risk before acting.
See Pro features