OG is an innovative prediction market that distinguishes itself with a vast sports scope, combo trade building options and also trading rewards. The fees are variable but kept nice and low, and there is excellent trading value to be had through the plethora of markets.
It sets a pretty high standard for prediction market users, but there are a few reasons why you may want to look elsewhere. For while the service is top notch, one of the main drawbacks of OG is that it doesn’t boast as much market volume as some other platforms out there. Lower market volume means less liquidity, and thus you get less for your take orders (and it can be more of a struggle to fill make orders).
Best Prediction Markets Like OG
OG has flexible payment methods, it has broad sports, politics, finance and cultural markets, and you have rewards – which are not common at prediction markets. So there is definitely a lot to like, and we gave it a high rating in our review. But OG.com’s main drawback is market volume, which is something that can become frustrating later if you run into unfilled orders or get limits on how much you can trade because there isn’t enough liquidity.
So when looking for alternatives, we explored sites that directly addressed the relatively lower market volume issue at OG.com. Naturally, we shortlisted picks to sites that have similarly vast sports markets and parlay building tools, where applicable. And, for good measure, we also picked out sites with relatively lower fee schedules, so they don’t eat too much into your margins.
#1. Kalshi
Kalshi is perhaps the best alternative to OG.com because it has the sports markets, the parlay functions, the flexible payment methods and its market volume is extremely high. It is no secret that the majority of the users at Kalshi trade sports contracts, and futures on bigger tournaments such as the NFL can even soak up hundreds of millions of dollars in trades. Just like OG, you can also build Combos, pick from a wide range of alternate lines and props, and for major events there is also good liquidity in live trades.
The fee schedule is also similar to OG’s, ranging from $0.07 to $1.75 per 100 contracts, paid when you open an order and if you close it before settlement. Kalshi doesn’t have much of a rewards program, which is one area where OG beats it. It can provide occasional Liquidity Rewards for holding specific positions, and you do get a welcome bonus when you sign up at Kalshi, but beyond that it has nothing on the OG rewards program. So you leverage the occasional boosts or site credits at OG for market volume – which is a fair trade-off if you spend more money on your predictions or want to pick out niche props or alternate lines.
Kalshi Pros:
- Large scope of sports categories and deep markets
- Flexible combo building features
- Similar fee schedule to OG
- High market volume
- Loads of payment methods
Kalshi Cons:
- Limited rewards
#2. Plus500
A trading and prediction market rolled into one, Plus500 boasts extremely high market volume, easy mobile functionality and a fixed fee structure. Plus500 is extremely beginner friendly, with plenty of guides that ease you into the world of prediction markets, and it has neat bankroll management features to monitor your finances. It is a perfect fit for strategic value betting, as you can compare historical performance metrics, scan through the sports markets and assess market volumes, and you always know how much you are going to pay for opening new positions or closing ongoing positions early.
Plus500, however, doesn’t have the same range of markets as OG, and it doesn’t offer any parlay building options. It doesn’t have the same range of supported payment methods as OG, and you should take care of withdrawals, which can be charged. This is perhaps best suited to sports fans who want to plan long-term betting strategies with value bets and position tracking, and are perhaps interested in the financial futures products.
Plus500 Pros:
- Prominent market volume across markets
- Bankroll management features
- Tracking line movements
- Fixed fee schedule
Plus500 Cons:
- Fewer payment methods
- Less sports coverage
#3. Novig
If you aren’t interested in trading contracts on the weather, political events or the economy, and just focus on sports, then Novig is a top choice. This was a sweepstakes sportsbook that used a P2P betting structure, and in the summer of 2026 Novig obtained a DCM license and converted its operations into a fully-fledged prediction market. Though it kept some of those useful P2P trading mechanisms. The final product is a sports-only prediction market where you get insightful market analytics, better options to sell contracts at your chosen price, and the market volume is right up there.
Novig boasts extensive sports coverage, with props and alternate lines too, and you can build parlays on the platform. It can hold its own against OG, and even has a 5-tier loyalty program. On top of that, there are recurring challenges to enhance the experience, much like OG does with its boosts and credits. The only shortcomings are the lack of non-sports markets, and while Novig supports crypto payments through Coinflow, the site doesn’t have nearly as many payment options as OG.
Novig Pros:
- Extensive sports coverage
- P2P trading features and better market data
- Loyalty program and recurring rewards
- Supports USDC and USDT stablecoin deposits
Novig Cons:
- Fewer payment methods
- No non-sports markets
#4. Polymarket
Polymarket US specializes in sports predictions with 15+ categories and a large expanse of intricate markets to delve into. Football, basketball, baseball, soccer, tennis, and golf are all covered, as well as various niche sports, and eSports gets special recognition on this site too. The platform uses a variable fee structure, with trades charged at anywhere from 0.5% up to 3%, which comes out to slightly lower than OG. Plus, there are rebates for both maker and taker orders, but taker rebate is only offered to high rollers (spending over $250k trading volume in 1 month).
What we like about this platform is the great functionality around trading predictions, you can easily browse markets, open any to view the market movements, and check for alternative markets (other game outcome, partial game derivatives or player-related markets). Polymarket US is still in Beta phase, and there are some functions that feel like they aren’t full developed yet. For instance, it doesn’t have much market data outside the movements, and while Combos are offered, these can only be made by filing special requests. Which takes time, and can expose you to market slippage.
Polymarket Pros:
- Low trading fees
- Expanded range of sports markets
- Large market volume and liquidity
Polymarket Cons:
- Still in Beta phase
- Could have more market analytics
- Combos only by request
#5. Crypto.com
Crypto.com is a similar entry to Plus500, as it has both prediction markets and financial products, but the latter are more geared towards crypto users. Essentially, this is one of the strongest options out there if you want to trade predictions and handle your crypto assets all in one place. The coverage spans sports, financials (crypto gets its own category), politics, climate, commodities, and various others. The sports coverage is not as comprehensive as OG, but you do get superior limit order features, detailed order book inputs, slippage tolerance setup, and instead of just $1 contracts you can trade $10 and even $100 contracts.
It is definitely suited to high rollers, and if you have a crypto portfolio, you can benefit from the blockchain based bonuses at Crypto.com, which can include perks like card cashback, reduced trading fees and CRO staking rewards. Trading fees are also variable, and can range from $0.01 (minimum) up to $0.0175 (max) per contract. Crypto.com is a strong alternative if you are looking for higher market volume and added crypto functions, with added blockchain-based rewards.
Crypto.com Pros:
- Crypto exchange and prediction market in one
- Superior trading features
- Similar fee schedule
- Blockchain rewards
Crypto.com Cons:
- Sports coverage is not as widespread
What To Look for in Prediction Markets
All prediction markets have their own unique offerings and strengths. As you can see in our list, there are native prediction market platforms, betting exchanges that have been converted into prediction markets, and even platforms with other services that provide a customer-facing prediction market. The latter doesn’t just cover financial trading apps or crypto exchanges, there are also a number of US sportsbooks that have made their own prediction markets. Including DraftKings, FanDuel and Fanatics – but they didn’t make our shortlist here.
Because OG provides something that is highly specialized, with a strong focus on sports, combo trading options, and a variety of payment methods to give you better flexibility. When you are looking at different prediction markets, you have to think about how you will use the platform, and what you expect from it. We do recommend OG.com, this is quite a formidable platform that has good trading features. But if you want to look elsewhere, you have to look at the various areas in which prediction markets can differ, and weigh up what’s important for your trading preferences.
Distinguishing Different Sites
Prediction markets generally follow the same structure, with binary contracts, plenty of sports markets, options to buyand sell contracts and place orders based on your price preferences. But beyond these core principles, there are many nuances in the service that can impact your trading strategy – be it hedging volatile markets or following line movements for key opportunities.
- Fee schedule: Most offer variable fee schedules, some have fixed fees, and the rules around cashing out can vary
- Sports coverage: Most cover futures and pregame markets, comparisons are more obvious in the depth of player props, alternate lines and partial game derivatives
- Non-sports categories: Check for what other categories are offered, but also observe the market volume and depth of markets
- Payment methods: OG is strong in this, as is Kalshi, make sure to also check for deposit/withdrawal fees
- Parlay/Combos: More sites offer these now, but even then, check whether these are built-in or only by special request
- Bankroll management: A big perk of prediction markets in financial trading apps – the bankroll management tools tend to be better structured
- Market Data: Extent of the analytics that you can check – book orders, market volume, liquidity on specific contracts
- Slippage tolerance: Check the features on maker orders or limit orders, if there are safeguards against price swings
Then, there is the market volume, which you should check very carefully. You immediately get an idea of how popular the platform is when looking for trending or high volume contracts. Though it is also relevant to delve into the markets for different games, looking to see how much trading volume goes on futures, pregame trades, and live trades. More market volume equals more liquidity, and so there is better chance of your resting orders getting filled, or for you to trade more money on specific events.
Choosing an Alternative to OG
Prediction markets are a much newer space than US sportsbooks, and you have to take note that this space is also changing at a much faster rate. OG is a good example of a market that emphasizes sports coverage, parlay trading, rewards and payment methods, which most traders will like. Though it is by no means the only option out there, and depending on what you are looking for, you can find options that have larger market volume, more specialized market analytics and trading options, better bankroll tools, or even access to completely separate functions such as crypto trading and financial portfolio building features.
All of the sites we have shortlisted here, Kalshi, Novig, Polymarket, Plus500 and Crypto.com all have their own unique strengths, and you can read about these in more depth in our reviews. Or, to see how they fare against the competition, you can check out our prediction market alternatives pages for those sites too. It all helps when weighing your options, and finally you can make the decision and pick the prediction market that gels best with your strategy.
