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Joined April 2026
Early Access to the OpenMarkets API is open. One feed. Every venue. Real-time, agent-native.
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On sports equinox night, the prediction market fragmentation problem gets loud. 5 leagues. 30,930 prices, spread across 9 venues that don't talk to each other. Same games, same bets, nine separate islands. OpenMarkets connects them in one place.
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New: Money x Movement. Two things, added up across OpenMarkets venues: Where the price is going, and where open orders are. Cowboys-Eagles MNF, as of 2:49 PM ET: Price: Cowboys 64% last Monday, 67% now. Open orders: $19.3M on Cowboys | $7.3M on Eagles.
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Open orders are bets people have posted on a team, waiting for someone to take the other side. We count only orders near the current price, then add them up across venues.
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You can be right on every game and still leave units on the table. Prices are split across venues, and so is your money. OpenMarkets brings it all together.
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11 NBA games: Best ML and spread after fees, across every venue. The shop gap column: On every favorite, the best venue beats the worst by $2-$8 on a $100 bet. On the dogs, it's bigger: $26 on the Clippers, $20 on the Mavericks, $19 on the Wizards, $18 on the Kings.
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The big CFB tilts are split. The leans are in the games nobody's talking about. Across every venue's order book: 77% of waiting money backs Iowa −7.5 at Minnesota 73% backs BYU −7.5 at UCF 79% backs Kansas +2.5 vs. Baylor
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RESTING LIQUIDITY: WEEK 7 SPREADS 🚨 - How much you could bet on each spread right now - Adding up every venue's order book - Only prices within 3¢ of the best number $2.52M waiting to back the Falcons +2.5. Only $943K on San Francisco.
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WORLD SERIES GAME 1 LIQUIDITY CHECK ✍️ $1.26M waiting at the Brewers' three best prices tonight. $653K on the Rays. Every venue, one view.
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OpenMarkets puts every venue's real price in one place: after fees, with the size behind it. That's how you find out −122 is −134 on a $100 bet, and where the best price really is.
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Lakers ML tonight vs. Warriors: Best listed: −203. After fees: −216 to −218. Real best? −208. Stop comparing prices before fees. OpenMarkets shows every venue after.
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Every game's best ML and spread price AFTER FEES, across our venues for tonight's 11-game slate 🚨 Same $100 on the Mavericks pays $40 more at the best price than the worst. Bulls: $25. Warriors: $22.
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Order Book Lean: NBA opening night 🚨 For each spread: how much is available to bet within 3 cents of best price. For each ML: What the available money pays, so faves don't look bigger for costing more. Spurs ML: $5.73M, +100 to −121 Thunder ML: $3.35M, −102 to −121
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Where the money sits on tonight's games... Under 2% (!) of the money on tonight's bets is at the best price after fees. $2.45M is waiting to take Under bets on MNF, 3x the Over side.
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Your idea. Our plumbing. Live now. The hard part of building on prediction markets isn't the idea. It's ten venue integrations, user accounts, credentials and billing. We built all of that. You build the part that's yours.
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If you bet $100 on every Week 6 winner... You could've made $173 more by picking the right venue. Prices are split across venues, and so is your money. OpenMarkets brings it all together.
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RAYS-GUARDIANS ALCS GAME 4 LIQUIDITY CHECK ✍️ - After fees, best prices are @ProphetX on the Rays, @Novig and @4castersbet on the Guardians - About $113K sits at those best prices - $15M sits a few cents behind, where fees push its prices back Best price and deepest money don't live at the same venue. OpenMarkets shows you both.
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Prices and money are split across venues. Your money is stuck in whichever ones you've funded. 19,445 NFL bets this week. On 1 in 3, fees change which venue pays best. That's why we're building OpenMarkets: every venue's prices and liquidity in one place.
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