Polymarket vs Kalshi
BetCollector tracks contracts on both Polymarket and Kalshi. Counts below are from the site catalog, not an official statement from either platform.
| Polymarket markets in catalog | 48829 |
|---|---|
| Kalshi markets in catalog | 2037 |
Matched Markets
Events identified as the same question on both platforms using BetCollector’s existing matcher.
- Matched market — Polymarket 13% — Kalshi 10% — difference -3 pp
- Matched market — Polymarket 17% — Kalshi 14% — difference -2 pp