StartupHub.ai's proprietary cross-venue engine has once again delivered, identifying 11 prediction market arbitrage opportunities as of August 5, 2026. These opportunities arise when the combined price of 'YES' on one venue and 'NO' on another for the same real-world event totals less than $1, effectively locking in a guaranteed payout for savvy traders.
For newcomers, an arbitrage lock means buying both sides of a market for less than the maximum possible payout, guaranteeing a profit regardless of the outcome. While 10 of these spreads are live right now, market prices can move extremely fast, and opportunities may close quickly. Potential traders should also factor in fees, KYC requirements, and withdrawal limits, which can impact overall returns.
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.
Focused guides: Polymarket arbitrage, Kalshi arbitrage, and the arbitrage bot API.
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.
