Is your book's line worse than the exchanges?
Kalshi and Polymarket are order books, not sportsbooks: no vig, just a small fee on winnings. On a typical day they sell the same outcome under DraftKings' own fair price on about a third of games. VenueGap shows you which ones, and pings you when it happens on your leagues.
Free, right now
The sportsbook vs exchanges table: every game in the next three days priced on DraftKings, Kalshi and Polymarket, the book's margin removed, the discount in points. No account.
Paid: the ping
Trader alerts you within a minute when an exchange sells an outcome ≥ your floor under the book's fair price, on the leagues you pick. Game Day sends the morning email and a 5-minute batch. Nothing places a bet; you do that where you like.
Game Day
The morning email with today's cheapest lines, and a phone alert when one of your leagues moves. Batched every 5 minutes.
- Discord, Telegram or email
- 1 alert rule
- batched every 5 min
- 7 days of price history
Trader
Pinged within a minute when Kalshi or Polymarket sells an outcome under DraftKings' fair price, on your leagues, your floor.
- sportsbook alerts: exchange under the book
- alerts on every 45s refresh
- 5 rules, 3 channels
- 30 days of history, CSV of 7
- API key, 600 req/min
Desk
For the model builders: every snapshot as a file, a live stream, and the API limit that never says no.
- live stream (SSE)
- all 30 days as CSV
- 25 rules, 10 channels
- API key, 3,000 req/min
Founding price: 100 seats, 0 taken. Prices rise at seat 100 or on October 31, whichever comes first; the rate you join at is yours for as long as you keep it. Next: Game Day $10, Trader $34, Desk $89.
The exchanges pay out in dollars on Kalshi and USDC on Polymarket; check what is available where you live. VenueGap is not affiliated with DraftKings, Kalshi or Polymarket, and nothing here is advice.
Questions
Is a $0.03 gap actually tradeable?
Sometimes. Fees on both venues eat $0.01 to $0.02 on a round trip, so the edge-after-fees alert is the one that matters for cross-venue trades; the gap alert is for when one venue is late to a move. Both are rules you set, and every alert links to the market page so you can see the books before you act.
Why pay when there are free scrapers on Apify and GitHub?
They give you the same raw pairs we give away free here. What they do not do: refresh every 45 seconds, filter thin books and near-certain favorites, subtract both venues' fees, keep 30 days of history, or message you. You are paying for the minute between a gap opening and your phone buzzing, and for not running a scheduler.
Do you route orders or hold funds?
No, and we will not. VenueGap is read-only. You trade on Kalshi or Polymarket yourself, in your own accounts. Nothing here is advice.
What happens when the price goes up?
Nothing, for you. The price you join at is written into your Stripe subscription and never changes while you keep it, monthly or yearly. The seat counter on this page is the number of paying customers in our store, not a marketing number.
What if it is not useful?
Email hello@venuegap.com inside 7 days of your first charge and it is refunded in full, no questions. After that, cancel from your settings page in one click and it ends at the end of the period you paid for.
Which sportsbooks?
DraftKings today, through ESPN's public odds, on games in the next three days for the leagues both exchanges list. The comparison removes the vig first, so "under the book" means under DraftKings' own fair number, not its posted line.
How fast, really?
Both venues are read every 45 seconds. Trader and Desk alerts go out on the first refresh where a market crosses a rule, then not again for that market for 30 minutes unless the gap widens by another point. Game Day holds alerts and sends them every 5 minutes.
Can I put the alerts in my Discord server?
A personal server, yes, on any tier with a Discord channel. A community server with members, that is the Server licence: it adds a "via VenueGap" line to each alert, allows up to 25 webhooks and 3 admin seats, and is the only tier licensed for redistribution.