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Books vs prediction markets

Beat the vig.

Every NFL, NBA and MLB player prop priced side by side — DraftKings and FanDuel against Kalshi, Polymarket and Novig, de-vigged, with the better number called out.

22 books & exchanges priced · updated 1 minute ago

How it works

Three steps, no spreadsheet.

  1. Step 1 We pull live prices Every prop, from the sportsbooks and from the prediction markets, on the same line.

    See a live board →

  2. Step 2 We de-vig and compare Prices convert to implied probability, so an exchange quote and a book quote are finally the same unit.

    How the comparison works →

  3. Step 3 You take the best number Every row names the venue and the price. You place it where it pays more.

    Compare today's prices →

Your books, your board

Not every book is legal in every state. Pick the ones you can bet — the whole site follows.

Choose your venues and drag them into the order you read them. Every board, every player and team page, both tools and the AI connector all use the same list — you never re-pick it per page.

Picking is free and takes effect immediately, signed out included. Premium is what makes the choice stick to your account across devices.

Props today by market

Jump straight into the market you bet.

Prediction market odds by venue

Kalshi, Polymarket and Novig, sport by sport.