Comparison · updated July 2026
OG vs Kalshi
OG and Kalshi are two of the most discussed prediction market platforms in the US. Here's a side-by-side look at how they compare on the factors that actually matter for traders.
Kalshi
The first CFTC-regulated event contract exchange in the United States.
Rating
OG
3.5
Kalshi
4.7
Best for
OG
Onchain traders
Kalshi
Regulated US event contracts
Regulation
OG
DeFi / offshore
Kalshi
CFTC-regulated
US availability
OG
Restricted
Kalshi
Available
Fees
OG
Onchain fees + spread
Kalshi
Up to 2% per trade
Mobile
OG
Good
Kalshi
Excellent
Markets
OG
Politics, Crypto, Culture
Kalshi
Politics, Economy, Sports, Weather, Culture, AI, Financial events
Payment
OG
Kalshi
ACH, Debit card, Wire transfer
Founded
OG
Kalshi
2018
Verdicts
Who wins, category by category
Final take
Should you choose OG or Kalshi?
Kalshi comes out narrowly ahead in our methodology, but both platforms have a clear lane. Choose OG for onchain traders, and Kalshi for regulated us event contracts.
