Platforms
Every site where you can bet on real-world outcomes — what it costs, who is behind it, and which countries it accepts.
Kalshi
LiveUS-regulated, and the one big site Americans can legally use. Dollars straight from a bank account, no crypto.
- Founded
- 2018
- Fees
- 0%–7%
- Chain
- Off-chain
Polymarket
LiveThe biggest one, with the widest choice of questions — elections, sport, awards, crypto. Paid in USDC.
- Founded
- 2020
- Fees
- 0%–7.2%
- Chain
- Polygon
Predict.fun
LiveBet from inside the Binance app — nothing separate to sign up for. Paid in USDT.
- Founded
- 2025
- Fees
- 0.018%–2%
- Chain
- BNB Chain
Limitless
LiveFast, short bets — a lot of them settle in minutes or hours instead of months. Paid in crypto (USDC).
- Founded
- 2024
- Fees
- 0.4%–3%
- Chain
- Base
XO Market
LiveAnyone can open a market here, so you find niche questions the big sites never list.
- Founded
- 2024
- Fees
- 0%–1%
- Chain
- XO Chain
Opinion
LiveBet from a crypto wallet on BNB Chain. Who won is decided by the site's own AI, not an outside referee.
- Founded
- 2025
- Fees
- 0%–1%
- Chain
- BNB Chain