◆ Cross-platform arbitrage detection

Find the spread.
Lock the profit.

SpreadHawk scans sportsbooks and prediction markets simultaneously, identifying arbitrage opportunities where opposing bets across platforms guarantee a return regardless of outcome.

spreadhawk — live scan
$ spreadhawk scan --platforms kalshi,polymarket,draftkings,fanduel
Connected to 4 platforms. Scanning 1,247 markets...

MARKET                                    LEGS           SPREAD    EST. RETURN
Fed Rate Cut July 2026
Kalshi YES $0.62 + Polymarket NO $0.34
$0.96
4.2%
+$42/1K
NBA Finals: Over 5.5 Games
DraftKings +135 / FanDuel -125
$0.97
3.1%
+$31/1K
BTC Above $120K by Aug 1
Kalshi YES $0.41 + Polymarket NO $0.55
$0.96
4.0%
+$40/1K
MLB: NYY vs BOS Run Line
BetMGM +1.5 (-108) / DraftKings -1.5 (+115)
$0.98
2.4%
+$24/1K

12 opportunities found | avg spread 3.2% | refresh 5s
How it works

One scanner. Every platform. Every edge.

Unified Market Scanning

Connects to Kalshi, Polymarket, DraftKings, FanDuel, BetMGM, and more through their APIs. Matches equivalent markets across platforms in real time.

Automatic Spread Detection

Calculates cross-platform spreads the moment odds diverge. Filters by minimum profit threshold, market type, and platform preference.

Stake Calculator

Instantly computes optimal bet sizing for each leg to equalize exposure. Shows exact dollar amounts for guaranteed returns on any bankroll.

Contract Verification

Flags when "matching" markets have different resolution criteria. Prevents the most common arb mistake: assuming two markets settle the same way.

$40M+
Prediction market arb profits extracted in 2025
2-8%
Typical cross-platform spread range
100+
Daily arbitrage opportunities across platforms

The edge exists. Most people just can't see it fast enough.

Sportsbooks and prediction markets price the same events differently, every day. SpreadHawk turns that inefficiency into a system: scan, calculate, execute. No guessing, no gambling, just math.