We tell you the true probability, your expected value, and where to actually place it — comparing 60+ sportsbooks PLUS Polymarket and Kalshi. Bet Hero compares only sportsbooks. OddsJam doesn't cross-venue at all. Try it on your next bet.
Fair price is the OB triangulated consensus across Polymarket (35% weight), Kalshi (45%) and the sportsbooks present (20% combined). EV is computed against that consensus. Past odds do not guarantee future outcomes.