Know the moment the two exchanges disagree.
The free screener shows you the gap while you are looking. Pro watches every market Kalshi and Polymarket both list, every 45 seconds, and tells you when a gap or a fee-adjusted edge opens on a market with real money on both sides. Your thresholds, your leagues, delivered to Discord, Telegram or email within a minute of the move.
Locked for as long as you keep it. First 100 seats.
What you get
- Alerts that follow you. Discord, Telegram or email, within a minute of a gap opening. The free site only alerts the tab you have open.
- Your thresholds. Minimum gap in points, minimum fee-adjusted edge in cents, minimum money on both sides, and which leagues or markets count.
- An API key. The alerts feed as JSON, so your own scripts can act on it, plus higher rate limits on the pairs and history endpoints.
- The receipts. Every alert links to the market page with both venues' prices, the three-day gap line, and the closing-line record.
What it is not
- It never routes an order or holds funds. You trade on Kalshi or Polymarket yourself, in your own accounts.
- It is not advice. Prices are mids from public order books; whether a gap is worth acting on is your call.
- It is not a black box. The method is on the Kalshi vs Polymarket page and the settled results are on the scoreboard.
Coverage
NFL games, MLB games, college football games, NBA games, NHL games, WNBA games, Fed rate decisions, Super Bowl futures, Champions League winner, NBA title futures, WNBA title futures, the 2028 Democratic nomination and 23 more categories, 536 markets matched right now.
How fast
Both venues are read every 45 seconds. An alert goes out on the first refresh where a market crosses your thresholds, then not again for that market for 30 minutes unless the gap widens by another point.
Refunds and cancelling
Cancel from your settings page in one click; it ends at the end of the month you paid for. If it is not useful in the first 7 days, email hello@venuegap.com and the charge is refunded, no questions.
Questions
Is a 3-point gap actually tradeable?
Sometimes. Fees on both venues eat 1 to 2 points on a round trip, so the fee-adjusted edge alert is the one that matters for cross-venue trades; the gap alert is for when one venue is simply late to a move. Both are configurable.
Which channels?
Discord (paste a webhook URL from any server or a private one you make), Telegram (message the bot once with your code). Browser push is next.
Can I use it for one league only?
Yes. Pick leagues in settings; nothing else will alert.
Do you take referral money from the exchanges?
Outbound links may carry a referral code when the programs are live; that never changes which markets or prices are shown. Disclosures are on the about page.