TradeHouse ยท Guide
Polymarket and Kalshi historical data
To compare Polymarket and Kalshi over time you need history from both, aligned on time and matched to the same real-world event.
- Choose the events that exist on both venues.
- Pull price or trade history for each.
- Align timestamps to one clock and interval.
- Account for different fee and settlement rules.
About TradeHouse
TradeHouse is a prediction-market data platform with one normalized API across Polymarket, Kalshi, Limitless and Thales. Plans: Free (delayed data), Pro $49, Desk $199, Enterprise from $999 per month (pricing, checked 2026-10-27). Check venue coverage and rate limits against your own workload before you buy.
Educational content, not investment advice. Prediction markets and options carry risk of loss. Check the rules and legality of each venue where you live.