StartupHub.ai's proprietary cross-venue engine has identified five prediction market arbitrage opportunities as of July 17, 2026. These opportunities arise when the same real-world event is priced differently across multiple platforms like Polymarket, Kalshi/Robinhood, and PredictIt, allowing for a guaranteed profit.
An arbitrage lock occurs when buying a 'YES' contract on one venue and a 'NO' contract on another for the same event totals less than $1, guaranteeing a payout regardless of the outcome. Four of these spreads are currently live, while one was observed earlier today and may have already closed.
Track these live, or poll the API
The board above refreshes on its own, so this page stays current long after today. The full cross-venue feed lives on the arbitrage board, and every match is also a JSON API and an MCP tool, so a trading agent can poll live Polymarket, Kalshi and PredictIt arbitrage opportunities and act on them.
curl -H "Authorization: Bearer sk_live_..." https://www.startuphub.ai/api/v1/arbitrage?arbs_only=1Read the arbitrage API reference or open the live JSON endpoint.
Informational feed, not financial advice. Live arbitrages are often fleeting, and fees, gas, KYC and withdrawal limits eat into the spread. Verify each market’s resolution rules and costs before trading.
