ProphetX
There is one honest answer and it is not a system: you come out ahead by taking prices better than the outcome is worth. Here is how ProphetX makes that possible — and where those prices are right now.
Every price is a probability in disguise. A -110 price says the outcome happens 52.38% of the time; a 42¢ contract says 42%. You have an edge when the price you can take implies a lower probability than the outcome actually has — that gap, repeated across many bets, is the only thing that makes a bettor profitable. Nothing else does, and no amount of confidence in a pick substitutes for it.
The practical version is simpler. When two venues price the same outcome and one is cheaper, the cheaper price is the better bet, whatever you think of the outcome. That is the entire idea behind this site, and it is the only claim on this page.
ProphetX is a betting exchange: users post the prices and you take the other side of someone else's bet instead of accepting a desk's number.
ProphetX charges commission on net winnings rather than embedding a margin, so the cost is explicit and only applies when you win.
ProphetX is live in a limited set of states and its liquidity concentrates on the biggest games and the most-traded player markets.
ProphetX edges come from another user leaving a stale offer up, so they are larger than an exchange-wide mispricing and they disappear faster.
A live one, from the board below. Donovan Mitchell rebounds over 5.5 is +22031.3%31¢ at ProphetX and +14540.8%41¢ at Bovada. Converted to probability, those two prices are 9.57 points apart on the same outcome — you are paying about 9.57 cents less per dollar of exposure at ProphetX for a bet you were going to make anyway. The +6.01% on the row is a different measurement: how far the ProphetX price sits below the de-vigged fair price for this outcome, which is what the board ranks on.
A gap that size does not make a bet a winner. It makes it a cheaper bet, and cheaper bets are what compound. Results over any short run are dominated by variance, and a run of losses tells you nothing about whether you were getting the better price.
BeatVig is showing 233 props where ProphetX beats the best sportsbook price right now, across NFL, NBA and MLB.
ProphetX
+22031.3%31¢
vs
Bovada
+14540.8%41¢
· +9.57pp vs Bovada
fair 37.3% · edge +5.57pp (worst case +4.75pp) — this edge is 5.57 percentage points under the de-vigging method BeatVig publishes and as little as 4.75 under the least flattering of the 4 methods that fit Kalshi's own two-sided prices
ProphetX
+21531.7%32¢
vs
Bovada
+16038.5%38¢
· +6.72pp vs Bovada
fair 37.5% · edge +5.31pp (worst case +2.4pp) — this edge is 5.31 percentage points under the de-vigging method BeatVig publishes and as little as 2.4 under the least flattering of the 4 methods that fit Bovada's own two-sided prices
Free accounts see a 3-edge sample from below the top of the board. Premium unlocks every ProphetX edge, every sport, every market.
Go PremiumSome people do and most people do not, and no page can tell you which you will be. What is measurable is the price you pay: taking the cheaper of two prices on the same outcome improves your expected result, and paying the more expensive one worsens it.
Compare the ProphetX quote to what every sportsbook is charging for the identical outcome, converted to implied probability so the two are the same unit. BeatVig does that conversion continuously and lists the props where ProphetX is currently the cheaper side.
On many props it is, because a sportsbook builds its margin into the line while ProphetX charges separately from the price. It is not cheaper on everything, and the only reliable way to know is to check the specific prop you want.
ProphetX charges commission on net winnings rather than embedding a margin, so the cost is explicit and only applies when you win.
No. A better price improves the long-run expectation of a bet and changes nothing about whether that individual bet wins. Short-run results are dominated by variance, and bets can and do lose at any price.
BeatVig compares prices. It is not a sportsbook or an exchange, accepts no wagers and sells no picks. Bet only what you can afford to lose. 21+. If you or someone you know has a gambling problem, call 1-800-GAMBLER, or read our responsible gambling page.
