Prediction Market Arbitrage: 10 Live Opportunities Identified Today, August 22, 2026

StartupHub.ai's proprietary cross-venue engine has surfaced 10 live prediction market arbitrage opportunities as of August 22, 2026. These opportunities involve buying 'YES' on one platform and 'NO' on another for the same real-world event, with the combined cost totaling less than $1. This strategy, known as an arbitrage lock, guarantees a payout of the difference per dollar invested, regardless of the event's outcome.

For newcomers, an arbitrage lock occurs when you can buy a 'YES' contract on one market and a 'NO' contract on another for the same event, and their combined price is less than $1, guaranteeing a profit. While our engine identified these 10 opportunities as live, spreads can move very quickly. Potential profits can also be impacted by fees, KYC requirements, and withdrawal limits on the respective platforms.

Track these live, or poll the free 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 free JSON API and an MCP tool, so a trading agent can poll live Polymarket, Kalshi and PredictIt arbitrage opportunities and act on them.

curl https://www.startuphub.ai/api/v1/arbitrage?arbs_only=1

Read 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.