Pretty much all sports gamblers lose (they're just too bad at math to realize such)

Sportsbooks employ quants, machine learning, and decades of data. Chances are, you do not really understand probabilities and how frequently events actually happen en masse.

No tool changes that. We try to help illustrate how sharp the books are and offer observable and reproducible strategies using actual, boring math.

Oddize offers dozens of angles you can stack and adjust, then run backtests against selected books (and time horizons) to see if a specific angle has ROI.

Free to use. No credit card. No catch. (You can use all functionality without registering-- try it and see)

Chances are, you're bad at math (and so are 99% of bettors)

A typical -110 line means you need to win 52.4% of your bets just to break even. Most recreational bettors (see: not regards yolo'ing parlays) aren't even approaching 50%. You will eventually get bled dry.

Books set lines with models, algorithms, and real-time adjustments. They limit winners. They are extremely good at what they do. No tout, no AI score, no "guaranteed system" changes that. Arbitrage can mitigate risk and offer guaranteed profits, but it isn't without faults, namely getting limited due to bet sizing and the fact OddsJam already peed in that pool and left.

Build Your Own Models

Free for all leagues

Pick the stats that matter to you—home/away splits, pace, defensive efficiency, whatever—and Oddize turns them into a prediction you can measure against real outcomes.

No black boxes. No mystery algorithms. You pick the inputs, you see the math, you decide if it's worth betting on. NFL, NBA, NHL, MLB, NCAAF, NCAAB.

Model Builder

Backtest Before You Bet

200 free backtests/month

Oddize takes a horse racing approach of "pick your own angles" and see the W/L and ROI. Stack multiple facets and compare it against random flips or simply betting the favorite and see if your strategy holds up. Run it against thousands of past games with real closing odds from ~20 US books. See the exact dollar amount you'd have won or lost.

Practice round with real data, no real money. Past performance doesn't indicate future performance, but there are lots of opportunities, specifically with teams having odds over +110 that are mispriced.

Backtesting

Compare Odds Across 20+ Books

Free for everyone

Different books give different prices on the same bet. Oddize shows them side by side so you always take the best number. This is the one thing that mechanically improves your bottom line.

Find arbs, track line movement, see where sharps are hitting. All in one view instead of 20 tabs.

Odds Board

Event Analysis

Free

Team stats, trends, odds, and model predictions for every game—all in one place. See where your model disagrees with the market and whether that disagreement has been profitable historically.

Event Analysis

What this won't do

  • Promise you'll be profitable
  • Sell you picks
  • Hide behind a proprietary algorithm
  • Replace the work of actually understanding markets

If a tool is making ridiculous claims, it is probably a scam. If there were a foolproof way to pick locks, they wouldn't be selling it. If infinite money could be made from doing arbitrage, why would there be 100 arb sites versus the operators simply doing it themselves? I built Oddize for how I look at handicapping, then due to my disdain of predatory books, figure why not give away most of it for free and charge for compute as necessary.

Pricing

Almost everything is free. Pro just removes limits on backtesting and modeling. Prices are low because we're still building—and they lock in for life.

Freeloader Odds

$0/month

  • Free Access to Another Odds Board
  • Some access to Oddizer modeling tooling
  • ~200 Predictions per month
  • Odds from 20+ Books
  • Arbs
  • +EV with weights
  • Steam Mode
  • Nagging guilt that you are using my electricity and not even buying my corgi dinner
Sign Up Now

Pro

$49.99/month

  • Make 'em say Ugh-- No Limits (on modeling)
  • Backtesting/Modeling
  • Predictions based on your books
  • Odds Board, etc.
Subscribe Now

What people say

"Your site is ugly AF but the functionality is solid."
"You use too many em-dashes, people will probably think you're using an LLM to write this copy if it weren't so bad."