ODDS & ARBITRAGE
Real-Time Odds, Spreads & Signals
Find arbitrage opportunities across prediction markets. Access odds, spreads, and signals in one place.
Discover spreads instantly.
Build on odds with signals and alerts.
Live Cross-Platform Spread
Response preview · illustrative values
Event
Will the Democrats win the House in 2026?
PolymarketYES 0.48NO 0.52
KalshiYES 0.52NO 0.48Cross-platform spread: 4.00%
{
"event": "Will the Democrats win the House in 2026?",
"markets": [
{
"platform": "Polymarket",
"yes_odds": 0.48,
"no_odds": 0.52
},
{
"platform": "Kalshi",
"yes_odds": 0.52,
"no_odds": 0.48
}
],
"yes_price_difference": 0.04,
"signal": "arbitrage"
}Unified API Response
Multi-outcome market data · illustrative values
import requests
url = "https://api.thepredictionmarkets.com/api/public/v1/events/democratic-presidential-nominee-2028"
event = requests.get(url, headers={"X-API-Key": "YOUR_API_KEY"}).json()
print(event)Unified response
Multi-outcome event
Democratic Presidential Nominee 2028
Outcomes
Kalshi:0.36/Polymarket:0.34(+0.02)Kalshi:0.12/Polymarket:0.13(-0.01)Kalshi:0.08/Polymarket:0.08(0.00)UNIFIED API
One API for Prediction Markets
REST API • WebSocket stream
Integrate once. Access events, odds, and multi-outcome markets across all platforms.
Single schema. No fragmented APIs.
- Binary and multi-outcome markets
- Real-time and historical data
- Cross-platform price comparison
No credit card required
Event Intelligence
Event
Will Bitcoin exceed $100K by Dec 31, 2026?
Odds
Polymarket0.64 Kalshi0.55 Latest News
Fed signals rate pause
Sentiment
Derived Signals
Momentum ↑ across news and odds
Spread widening: +0.09
Sentiment accelerating
Aggregated across markets, news, and derived signals
Intelligence Layer
Event Intelligence for Prediction Markets
Aggregate market data, news, and signals around every event.
News, sentiment, and derived signals in one view.
- News aggregation by event
- Sentiment analysis
- Derived signals (momentum, divergence)
Live Orderbook
Market depth snapshot
Event
Will Bitcoin exceed $100K by Dec 31, 2026?
Bids
Asks
Aggregated across markets, news, and derived signals
WebSocket Streaming
Real-Time Orderbooks via WebSockets
Stream live bids, asks, and trades across markets. No polling required.
Subscribe to one market or many. Track depth and price updates in real time.
- WebSocket and webhook streams
- Live orderbook depth
- Price updates across platforms
No credit card required