Vig is the book’s margin
Sportsbooks build a margin into their odds. On a two-sided market, the implied probabilities usually add up to more than 100%. That extra amount is the overround—not a promise of the book’s actual profit.
Product
How VIGS.AI works
Five steps from raw market data to an accountable record.
- Step 1
Live odds in
We pull prices from multiple sportsbooks and store every change as a timestamped snapshot.
- Step 2
Line movement & best price
Snapshots become movement history and sparklines. For each side we highlight the book with the best current price.
- Step 3
+EV & signals
No-vig consensus, +EV, arbitrage, middles and steam moves are computed from stored odds — never from invented prices.
- Step 4
AI analysis, grounded
The AI reads only our stored odds and movement for a game. If the data doesn't support a pick, it says “No bet recommended.”
- Step 5
Track & publish
Save picks at the best available price in My Picks. AI picks are graded from final scores and published on the public ledger.
What's included
- Multi-book odds comparison and best price
- Stored line-movement history
- +EV, arbitrage and middles (Pro+)
- AI matchup analysis from stored data
- Pick tracking and a public AI ledger
What isn't
- No wagering, deposits or payouts — we're not a sportsbook
- No guaranteed profit; past results don't predict future ones
- AI suggestions are research, not financial advice
- No betting splits, injuries or props without a licensed source
Know the price
Vig & value: the price matters.
Picking the winner is only half the question. The odds decide what you need to win to break even—and whether the risk is worth the return.
Value is price vs probability
A likely winner can still be overpriced. Positive expected value means the payout is favorable compared with an estimated fair chance—not that this particular bet will win.
Shop the same line
Compare the exact same selection, handicap and settlement rules. A less negative price or a bigger positive price improves the payout. VIGS.AI compares stored book prices and estimates no-vig consensus from at least three books.
Illustrative math only · not a live market or pick
At −110 on both sides, each side implies a 52.38% chance: 104.76% combined. Removing that margin gives a 50% estimate per side. At a true 50% chance, a $100 stake at +110 has an expected profit of $5; at −110 it has an expected loss of about $4.55. Actual results can differ, and the true probability is never known for certain.
Sports betting terminology
The language behind the odds, signals and record.
Odds & markets
Vig, probability & value
Movement, staking & results
Education and research only. No guaranteed returns. Set limits, never chase losses, and never risk money you need for essentials. 21+. Gambling problem? Call 1-800-GAMBLER.