Arbitrage Scanner
Cross-venue opportunities
Compare Polymarket prices against counter venues and inspect directional spreads.
Scanner Filters
Tune matching and spread thresholds before scanning.
Prediction Market Arbitrage
Polymarket and Kalshi arbitrage scanner
Predicts.guru scans matched prediction markets to find cross-platform price differences between Polymarket, Kalshi, and Limitless. The scanner is built for traders researching Polymarket arbitrage, Kalshi arbitrage, and broader prediction market arbitrage opportunities.
The core setup is simple: if one venue has a cheaper YES contract and another venue has a cheaper NO contract on the same event, the combined cost can fall below $1.00. The table shows the matched market, current YES prices, estimated spread, similarity score, and the two action legs to inspect.
What the arbitrage page helps answer
- Where is YES cheaper? Compare Polymarket YES against Kalshi or Limitless YES for the same market.
- Which NO leg completes the hedge? Use the action chips to open the opposite side and verify the combined cost.
- Is the match trustworthy? Review similarity, expiration, market titles, and risk flags before treating a spread as actionable.
1. Match the same event
The scanner groups similar event questions across venues, then surfaces the markets that appear to track the same outcome.
2. Compare YES and NO
Prediction market arbitrage usually comes from pairing a YES contract on one venue with a NO contract on another venue.
3. Check execution risk
A visible spread is only a starting point. Check liquidity, final rules, fees, and whether both markets can be entered at the displayed prices.
Keywords and search intents covered by this scanner
These are the practical search intents the arbitrage page is designed to answer.
| Search phrase | Intent | What to inspect |
|---|---|---|
| Polymarket arbitrage | Find markets where Polymarket is cheaper or more expensive than another venue. | Polymarket YES price, opposite NO leg, spread, and direct event link. |
| Kalshi arbitrage | Compare Kalshi contracts with matching prediction markets on Polymarket. | Kalshi YES price, matched Polymarket event, similarity score, and expiration context. |
| Prediction market arbitrage scanner | Scan many cross-platform markets instead of checking prices manually. | Sortable table of matched markets, live spreads, action legs, and risk flags. |
How to use the Polymarket Kalshi arbitrage table
Start with exact matches, active markets, and a high similarity threshold. Sort by spread to find the largest gaps first, then open the action chips in a new tab and compare the full market wording on both venues.
For deeper research, inspect related wallets with the Polymarket wallet checker, review market-level holder and volume behavior in event analytics, or compare trader performance on the Polymarket leaderboard.
Important arbitrage risks
- Resolution rules can differ between platforms even when questions look similar.
- Fees, bid/ask spread, liquidity, and transfer timing can reduce or remove a visible edge.
- Some venues may restrict access by region, account status, or market availability.
- Prices move quickly, so every opportunity should be rechecked on both event pages before trading.
Predicts.guru provides market analytics for research workflows only. The arbitrage scanner is not financial, trading, investment, legal, or tax advice. Always verify prices and market rules directly on each platform.