Strikeouts o4.5
Kalshi
+163 vs
FanDuel
+132
+5.08%
edge
Right now BeatVig prices 27 MLB props at both venues. Kalshi is the cheaper side on 27 of them and FanDuel is cheaper on 0. Last refreshed 16 Sep 11:05 ET.
How they differ
FanDuel prices a deeper prop menu than Kalshi lists, so the interesting question is not who covers more — it is who is cheaper on the props both of them price. FanDuel earns its margin on every bet you make; Kalshi charges a per-contract fee that is biggest on close-to-even markets and smallest on lopsided ones. That means the gap between them is not a constant, and the only honest way to answer it is to measure it per prop, which is what the board below does.
Where Kalshi is cheaper
Strikeouts o4.5
Kalshi
-138 vs
FanDuel
-170
+4.98%
edge
Strikeouts o2.5
Kalshi
-100 vs
FanDuel
-122
+4.96%
edge
24 more props behind Premium
Free accounts see the top 3. Premium unlocks every prop where Kalshi beats FanDuel, in every sport.
Go PremiumHow each one charges
- Kalshi
- Kalshi is a CFTC-regulated exchange. Every contract settles at $1 or $0, so a 42¢ quote is a 42% implied probability with no sportsbook margin layered on top.
- Kalshi charges a per-contract trading fee instead of building a margin into the line. The fee is a curve, not a flat rake: it peaks at roughly 1.75¢ on a contract priced near 50¢ and shrinks toward zero at both extremes, and maker fees are a quarter of taker fees.
- Kalshi lists player markets as "X or more" yes/no contracts rather than as an over/under line, so BeatVig converts each contract to the equivalent over price before comparing it to a sportsbook number.
- FanDuel
- FanDuel is a traditional sportsbook: it sets the line and prices both sides with its margin included rather than matching you against another bettor.
- FanDuel's margin is inside the price, so it is charged on every bet regardless of the result.
- FanDuel prices a broad US player-prop menu across the major leagues.
Kalshi vs FanDuel FAQ
Is Kalshi cheaper than FanDuel?
Across the 27 MLB props priced at both venues right now, Kalshi is the cheaper side on 27 and FanDuel is cheaper on 0. Neither venue is cheaper on everything, and the split moves through the day as both boards update.
How do you compare a Kalshi price to a FanDuel price?
Every quote from both venues is converted to the implied probability of the same outcome, so a contract price and an American price become the same unit. The cheaper venue is the one implying the lower probability for the side you want.
What does Kalshi charge?
Kalshi charges a per-contract trading fee instead of building a margin into the line. The fee is a curve, not a flat rake: it peaks at roughly 1.75¢ on a contract priced near 50¢ and shrinks toward zero at both extremes, and maker fees are a quarter of taker fees.
What does FanDuel charge?
FanDuel's margin is inside the price, so it is charged on every bet regardless of the result.
How often does this comparison update?
It is computed from the live board every time the page loads, so it reflects the prices both venues are showing at that moment rather than a snapshot taken on an earlier day.