Prediction Market Arbitrage: 7 Opportunities Live N…

As of August 30, 2026, StartupHub.ai's cross-venue engine has surfaced seven live prediction market arbitrage opportunities. These opportunities involve the same real-world event being priced differently across venues like Polymarket, Kalshi (including its Robinhood integration), and PredictIt, allowing for a risk-free profit.

An arbitrage lock occurs when buying 'YES' on one market and 'NO' on an equivalent market on a different venue costs less than $1 in total, guaranteeing a payout of $1 regardless of the outcome. It is crucial to remember that spreads can close quickly, and potential profits may be affected by fees, KYC requirements, and withdrawal limits. This information is for educational purposes only and not financial advice.

Live arbitrage right now These update automatically. Tap a leg to open the venue. Not financial advice.

Which party will win the 2026 US Senate election in South Carolina? for Republican. Arbitrage: 300.0% ROI, locks 75c per $1. Buy YES on Polymarket at 14c, buy NO on PredictIt at 11c.
Where will Putin and Zelenskyy next meet? Will Putin and Zelenskyy meet next in Switzerland?. Arbitrage: 20.1% ROI, locks 17c per $1. Buy YES on Polymarket at 0c, buy NO on Kalshi / Robinhood at 83c.
Will Rubio and Vance both announce a run for President before 2028?. Arbitrage: 13.6% ROI, locks 12c per $1. Buy YES on Kalshi / Robinhood at 43c, buy NO on PredictIt at 45c.
French presidential election: who will advance? Will François Hollande qualify for the runoff in the 2027 French presidential election?. Arbitrage: 7.4% ROI, locks 7c per $1. Buy YES on Polymarket at 0c, buy NO on Kalshi / Robinhood at 93c.
Who will be the next new Prime Minister of Romania? Will Radu Burnete be the next Prime Minister of Romania?. Arbitrage: 6.2% ROI, locks 6c per $1. Buy YES on Polymarket at 3c, buy NO on Kalshi / Robinhood at 91c.
2028 Republican VP nominee Will Ron DeSantis be the nominee for the Vice Presidency for the Republican party?. Arbitrage: 4.2% ROI, locks 4c per $1. Buy YES on Kalshi / Robinhood at 1c, buy NO on PredictIt at 95c.
Where will Putin and Zelenskyy next meet? Will Putin and Zelenskyy meet next in Ukraine?. Arbitrage: 4.0% ROI, locks 4c per $1. Buy YES on Polymarket at 0c, buy NO on Kalshi / Robinhood at 96c.

See the full live arbitrage board or poll the free JSON API.

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.

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Prediction Market Arbitrage: 7 Opportunities Live Now on Polymarket, Kalshi, and PredictIt

Track these live, or poll the free API