Comparison · updated July 2026
Underdog Fantasy vs Kalshi
Underdog Fantasy 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.
Underdog Fantasy
Daily fantasy and pick-em products, adjacent to event contracts.
Kalshi
The first CFTC-regulated event contract exchange in the United States.
Rating
Underdog Fantasy
4.2
Kalshi
4.7
Best for
Underdog Fantasy
Sports pick-em fans
Kalshi
Regulated US event contracts
Regulation
Underdog Fantasy
DFS regulator patchwork
Kalshi
CFTC-regulated
US availability
Underdog Fantasy
Available
Kalshi
Available
Fees
Underdog Fantasy
Standard DFS rake
Kalshi
Up to 2% per trade
Mobile
Underdog Fantasy
Good
Kalshi
Excellent
Markets
Underdog Fantasy
Sports
Kalshi
Politics, Economy, Sports, Weather, Culture, AI, Financial events
Payment
Underdog Fantasy
Kalshi
ACH, Debit card, Wire transfer
Founded
Underdog Fantasy
Kalshi
2018
Verdicts
Who wins, category by category
Final take
Should you choose Underdog Fantasy or Kalshi?
Kalshi comes out narrowly ahead in our methodology, but both platforms have a clear lane. Choose Underdog Fantasy for sports pick-em fans, and Kalshi for regulated us event contracts.