Kalshi vs PredictIt
PredictIt was many traders' first taste of political prediction markets, but it works quite differently from Kalshi. The contrasts in structure, limits, and breadth are worth understanding.
Here is the comparison. Availability and rules for both can change, so confirm current details before trading.
Regulated exchange versus academic market
Kalshi is a full CFTC-regulated exchange built for a broad range of event contracts. PredictIt originated as an academic, research-oriented political market operating under special regulatory arrangements. That difference in origin shapes nearly everything else about how each one feels to trade.
Limits and fees
PredictIt has historically imposed tight constraints: caps on how much an individual can hold in a single contract, caps on the number of traders per market, and fees taken on profits and withdrawals. Kalshi operates without those small per-trader caps and uses a per-trade fee structure instead. For anyone trading meaningful size, those limits are a major practical difference.
Market breadth
PredictIt focuses heavily on politics. Kalshi spans economics, weather, sports, politics, crypto, and more, plus its newer perpetual futures. If you want variety beyond elections, Kalshi's catalog is far wider.
Which to use
If your interest is narrowly political and you are trading small, PredictIt may feel familiar. If you want a regulated exchange, larger position sizes, a broad market catalog, and an exchange-style order book, Kalshi is the more capable venue. Given the shifting regulatory picture, check what each currently offers before committing.