Prediction Market Arbitrage Finder & Value Bet Scanner

Live Arbitrage Finder & Value Bet Scanner

A free prediction market arbitrage finder: real signals from the Claw Arbs engine, streaming as they are detected: cross-venue arbitrage between Kalshi, Polymarket, predict.fun and SX.bet, plus single-leg value bets where a market price drifts away from fair value. Updated roughly every 180 seconds.

live
Upstream feed temporarily unreachable. Showing the last known data.

Note: some venue links on this page include a referral code. It costs you nothing and helps keep this scanner free.

This page refreshes every 180 seconds and doesn't track market depth, so some of these edges may already be gone by the time you see them. Claw Arbs runs on real-time odds and takes each edge the instant it appears, 24/7, faster than any human, and it hunts across many more bookmakers than the four you see here. Get the app

Live Arbitrage two-leg, both sides locked

No pure arbitrage window is open right now. They are rare and usually die within a minute. The app watches every scan and fires both legs automatically the second prices cross. Value bets below appear far more often.

Live Value Bets one leg, price vs fair value

Value edges shown here are raw and not devigged. The Claw Arbs desktop app includes devig options for stricter true-value estimates.

No value bet clears the display floor right now. New signals usually show up within a few scans. The desktop app streams these continuously and can bet them automatically.

Recently detected examples

A snapshot of arbitrage and value bet signals recently detected by the Claw Arbs engine across Kalshi, Polymarket, Predict.fun, and SX Bet. The live feed above shows current opportunities in real time; the items below are captured examples of what the scanner surfaces.

Value bet examples

How this scanner works

The Claw Arbs engine polls Kalshi, Polymarket, predict.fun and SX.bet roughly every 180 seconds, normalizes every sports market into one probability space, and pairs the same real-world match across venues with a fuzzy team-name matcher. When the combined cost of opposite sides falls below $1.00, that is an arbitrage: both legs are shown here with net edge after fees. When a single venue's price drifts from our fair-value estimate by more than 1%, it appears as a value bet.

Why edges disappear so fast

Other bots and market makers close these gaps quickly, often in under a minute. A row leaving the board means the prices converged or liquidity was taken. Watching this page for a few minutes is the best demonstration of why automation wins: by the time a human has both venues open, the window is usually gone.

Do it automatically

The Claw Arbs desktop app runs this same detection locally with live websocket prices, sizes positions, and places both legs in milliseconds. Get Claw Arbs and paper-trade the exact signals on this page.

Frequently asked questions

Is the Claw Arbs live scanner free to use?

Yes. The scanner is completely free and requires no signup or account. It streams live arbitrage opportunities and value bets across four prediction markets directly in your browser.

Which prediction markets does the scanner cover?

The public scanner covers Kalshi, Polymarket, Predict.fun, and SX Bet. The Claw Arbs desktop app extends coverage to sharp sportsbooks including Pinnacle (PS3838), BetInAsia, and Sportmarket, plus crypto sportsbooks like Stake.com and BC.Game, and any additional bookmaker through community-shared calibrations.

How often does the scanner update?

The engine polls each venue roughly every 180 seconds, normalizes prices into one probability space, and pairs matched events across venues to detect edges. New arbitrages and value bets appear on this page as they are found, and disappear when the market corrects.

Why do the arbitrage opportunities disappear so quickly?

Cross-venue arbitrage windows are short-lived because other bots and market makers close the gap fast, usually within a minute. A row leaving the board means the prices converged or the liquidity was taken. This is exactly why automation wins over manual arbing.

What is the difference between the arbitrage and value bet signals?

Arbitrage requires both legs to be lockable, meaning the combined cost of opposite outcomes falls below $1.00 for a guaranteed profit after fees. A value bet is a single-leg edge where one venue's price has drifted from our fair-value estimate by more than one percent, so expected value is positive but the outcome is not guaranteed.

Can I place these bets automatically?

Not through the public scanner (it is view-only). The Claw Arbs desktop app runs the same detection locally with faster websocket prices and can automatically place both legs of an arbitrage, or fire a value bet the moment an edge appears, using your own funded venue accounts.

Some outbound venue links are referral links; they cost you nothing and support this free scanner. Prices can move between detection and your click, so always verify at the venue. Nothing on this page is financial or betting advice, and availability of each venue depends on your jurisdiction. Trade only what you can afford to lose. See our disclaimer and responsible gambling pages.