Find where venues disagree on the same outcome’s price. A large spread signals potential mispricing.
Example: “Will the Fed cut rates?” — YES is 42c on Kalshi but 39c on Polymarket. If you think the true price is closer to 42c, Polymarket is offering a discount.
Unlike arbitrage, price spreads are not risk-free. They highlight venue disagreement, which can signal a trading edge.
Parameters
Lookback window in minutes.
Example
curl -H "X-API-Key: your_api_key" \
"https://api.oddpool.com/arbitrage/current/difference?minutes=10"
Response
[
{
"event_id": 42,
"event_title": "Fed rate decision March",
"kalshi_event_ticker": "KXFEDDECISION-26MAR",
"polymarket_event_slug": "fed-rate-march",
"opinion_market_id": null,
"market_type": "binary",
"outcome_key": "yes",
"label": "25bps cut",
"timestamp": "2026-03-11T14:30:00",
"resolution_time": "2026-03-19T18:00:00",
"side": "YES",
"side1": "Kalshi",
"side2": "Polymarket",
"side1_price": 0.42,
"side2_price": 0.39,
"diff": 0.03
}
]
