Changelog

You can now paper trade any market on Kalshi or Polymarket. Pick an outcome, size your position, and track your P&L as real odds move — all without putting up real money.

This isn't a tutorial mode. It's a full trading simulator built on live market data. Every price you see is real. Every position tracks against the actual orderbook. When a market resolves, your positions settle automatically based on the real outcome. The only thing that's fake is the money.

We built this because most people watch prediction markets for weeks before placing their first trade. Paper trading lets you test your reads in real time. You think the market is wrong on an outcome? Put a position on it and find out. Track how your thesis plays out across days or weeks without worrying about the downside.

How it works:

• Visit any Kalshi or Polymarket event page and hit Buy Yes or Buy No
• You get $10K virtual cash to allocate however you want
• Your portfolio page shows all open positions with live P&L, updated every 5 seconds
• Markets settle automatically when the venue reports a result — winners get $1/share, losers get $0
• Full trade history and realized P&L tracking

The portfolio page is designed to make you want to check it. Big portfolio value up top, a P&L chart that builds over time, and your best and worst positions at a glance. Think Robinhood, but for prediction markets.

Paper trading is free for all signed-in users. No limits on positions, no restrictions on which markets you can trade. Sign in and start sizing up your next trade on Paper Trading.

We launched Oddpool Premium, a new tier for builders who want programmatic access to the same data that powers our dashboards.

Premium gives you full API access to every endpoint on Oddpool. That means Arbitrage, Price Spreads, Search, and Whale data, all available via simple GET requests. If you can see it in a dashboard, you can pull it into your code.

This is built for people who want to automate. Arb detection bots, spread alerts, new-market scanners, custom dashboards — whatever you want to build on top of prediction market data. The API returns the same signals our Pro users see in the UI, but in a format your code can act on.

What Premium includes:

• Everything in Pro ($30/mo)
• Arbitrage API to detect cross-venue opportunities in real time
• Price Spreads API for venue disagreements ranked by gap size
• Search API to discover new markets the moment they list
• 1,000 req/min rate limit for real-time polling
• Full docs and llms.txt for AI-agent-ready integration

Premium is $100/month. Like Pro, you can cancel anytime from your account page.

If you're already on Pro and want to upgrade, head to Pricing. If you build something cool with the API, let us know.

We added Opinion as a third venue to the Arbitrage Scanner.

Oddpool now scans for pricing gaps across Kalshi, Polymarket, and Opinion simultaneously. That means more arb opportunities and tighter coverage across prediction markets. If the same outcome is priced differently on any two of the three venues, we'll surface it.

Opinion is a newer prediction market that's been growing fast, and we've seen some seriously wide spreads between Opinion and the other platforms. Adding it to the scanner was a no-brainer.

Everything works the same as before. You get net profit after fees, live order books for both legs of the trade, and direct links to place your orders. You can filter by venue if you only want to see arbs involving a specific platform.

The scanner also now color-codes each venue so you can quickly tell which platforms are involved in a given opportunity. Kalshi is green, Polymarket is blue, Opinion is orange.

We also integrated Opinion data into our ingestion pipeline, so any event that exists across all three venues gets matched and tracked automatically. This feeds into the arb scanner, market differences, and the rest of the Oddpool platform.

More venues means more inefficiencies to catch. Happy trading.

We rebuilt the Oddpool homepage from the ground up. You can now search across every event on Kalshi and Polymarket from one place.

Type in any topic and you'll get instant results from both platforms. Click through to see live odds, order books, whale sentiment, and trades for that event. No more tab switching between venues. No more guessing where the action is.

This is the core of what we're building. Oddpool exists to aggregate all prediction market data in one convenient place. Whether you're researching an election, tracking a crypto price target, or following a sports game, you should be able to find it, compare it, and trade it without friction.

The new homepage also shows trending markets in real time. You can see what's moving right now across both platforms, with live prices and volume data. Every card links to a full dashboard with charts, order books, and whale activity.

Features include:

• Universal search across Kalshi and Polymarket
• Trending markets with live odds
• Direct links to full event dashboards
• Order books, trade feeds, and whale data on every event

This is a big step toward giving you the signal you need to form trades. One search, both venues, all the data.

We just shipped a major upgrade to every Oddpool dashboard. You can now see live order books and a real-time trade feed directly on any event page.

The order book shows current bid and ask depth so you can see exactly where liquidity sits before placing a trade. The trade feed streams recent executions as they happen, giving you a pulse on market activity and momentum.

We also added a Yes/No toggle that lets you flip between sides instantly. Whether you are looking to buy Yes or No, you can now see the relevant order book and pricing without jumping between views.

These tools are available across all Oddpool dashboards — politics, sports, crypto, finance, and everything else we cover. Just click into any market and you will see the new widgets alongside the price charts and odds comparisons you already use.

This is part of our ongoing push to give you the same depth of market data that professional traders rely on, right in your browser.

We shipped a public API.

The API gives you programmatic access to your tracked events, the whale feed, stats, and market-level data. All available via simple GET requests. Authenticate with an API key, and you're good to go.

This is useful if you want to build on top of the data. Trading signals, automated alerts, custom dashboards, or whatever else you can think of. The data is yours to use however you want.

Right now the API covers Whale Tracking only. We'll expand it to other parts of Oddpool over time.

To get started:

• API Documentation: endpoints, parameters, example responses
• Account Settings: generate your API key

Rate limits are 10 requests per second burst, 1,000 per minute sustained. API access requires a Pro subscription.

If you build something cool with it, let us know.

We released Whale Tracking, a new tool that surfaces large trades across Kalshi and Polymarket in real time. When someone drops $10,000 or $50,000 on a single market, you'll see it happen.

Most traders watch odds shift without knowing why. Whale Tracking changes that. It filters out retail noise and shows you where the smart money is actually moving. Whether it's a political event, an economic indicator, a sports game, or a crypto prediction, you see the big bets as they happen.

The public feed shows all whale activity across tracked events. If you want something more focused, you can build your own feed by tracking specific events. Free users can track one event, Pro subscribers can track up to ten.

Features include:

• Real time whale trades from Kalshi and Polymarket
• Filter by platform, category, and minimum trade size
• Track specific events to build a personalized feed
• Drill into any event or market to see its full whale history
• Volume breakdowns showing yes vs no money flow

Check it out here:

• Whale Tracking

Large trades don't guarantee outcomes, but they do reveal conviction. Whale Tracking gives you visibility into what the biggest players are betting on.

We added four new series pages that bring together related markets into one place.

2028 Presidential Election tracks the full race — who wins the presidency, plus the Democratic and Republican primaries. You get a party split view and a ranked list of candidates with live odds from both Kalshi and Polymarket.

98th Academy Awards covers all the major Oscar categories. Best Picture, Best Director, the acting awards, screenwriting, animated, documentary, and more. Each category shows the frontrunner and full nominee odds.

FIFA World Cup 2026 and NHL Stanley Cup round things out on the sports side. World Cup covers the tournament winner and all 12 group stages. Stanley Cup has the championship odds, division winners, and individual awards.

Check them out:

• 2028 Presidential Election
• 98th Academy Awards
• FIFA World Cup 2026
• NHL Stanley Cup

We released the NFL Weekly Dashboard, a new way to track prediction market odds for every NFL game each week. This dashboard brings together win probabilities from both Kalshi and Polymarket in one clean view.

The NFL Weekly page shows all upcoming and recently completed games with live odds, team matchups, and the ability to filter between upcoming and resolved games. Each game card displays the average win probability across both venues, making it easy to see which team the market favors at a glance.

Click into any game to see detailed charts, price history, and a full team comparison including records, point differentials, playoff seeds, streaks, and complete season schedules for both teams.

Features include:

• Live win probabilities for every NFL game this week
• Side by side odds from Kalshi and Polymarket
• Filter between upcoming and resolved games
• Team matchup comparisons with season stats
• Full season schedules for both teams in each matchup

Check it out here:

• NFL Weekly

This release expands our sports coverage and gives NFL fans a dedicated place to track prediction market odds throughout the season.

We released the Kalshi vs Polymarket Dominance Index, a new market intelligence tool that measures where real prediction market activity is happening.

The Dominance Index is a composite score that compares Kalshi and Polymarket using three signals: 24 hour volume share, liquidity share, and liquidity turnover. These metrics are combined into a single index that shows which venue traders are actively using at any given moment.

Rather than focusing on market count, the index highlights where capital is deployed, where liquidity lives, and how efficiently it is being used. This creates a clearer picture of venue strength and momentum across prediction markets.

You can explore the index here:

• Market Dominance Index

This release adds a new way to understand venue level dynamics and brings more structure and transparency to how prediction markets are analyzed.

We finally created this changelog so you can keep up with everything we are building. Things are moving fast around here and we wanted a single place to share the latest improvements, new tools, and all the cool stuff we keep shipping.

Check back often. We have a lot more coming.

We released the Oddpool Volume Dashboard, a new pro tool that helps traders understand where money is flowing across prediction markets in real time. This dashboard shows 24 hour volume, liquidity, and rank changes across hundreds of active markets.

Volume movements reveal trends long before prices adjust. The Volume Dashboard gives traders a way to see momentum early, track which events are heating up, and understand which markets have real depth.

The Volume Dashboard includes:

• Live 24 hour volume tracking across 800 plus markets
• Liquidity visibility for both events and individual contracts
• Rank changes updated every 30 seconds
• Category level insights that highlight where activity is concentrated
• A unified view of volume across Kalshi and Polymarket

Access the dashboard here:

• Volume Dashboard

This release adds another advanced tool to the Oddpool suite and gives traders a deeper understanding of market activity as it unfolds.

We released the Oddpool Dashboard Hub, a central place to access every dashboard on the platform. The hub makes it easy to navigate between our pro tools and the full library of free event dashboards that come with every account.

Alongside the hub, we launched more than 25 new free dashboards across politics, sports, crypto, finance, and culture. All free dashboards are available to every signed in user with no credit card required.

Here is a look at what is included:

Politics
8 dashboards covering the 2028 Presidential Race, party nominees, state level elections, Fed Chair predictions, and more.

Sports
6 dashboards including Champions League, Stanley Cup, F1 Champion, and conference races.

Crypto and Finance
5 dashboards covering IPOs, Google Search leaders, wealth rankings, and other market signals.

Culture
6 dashboards including the Oscars, Grammys, Game Awards, Spotify charts, and Time Person of the Year.

You can explore everything in one place here:

• Oddpool Dashboard Hub

This release expands Oddpool into a full library of curated prediction market dashboards and helps traders and analysts stay on top of every major category.

We released the Oddpool Arbitrage Scanner, our first paid feature and the most powerful tool we have built so far. The scanner monitors Kalshi and Polymarket in real time and surfaces pricing gaps the moment they appear.

The goal is simple. Help traders find profitable mispricings before they vanish.

The Arbitrage Scanner includes:

• Live detection of cross venue price gaps
• Automatic net profit calculations that account for fees
• ROI sorting so the best opportunities rise to the top
• Updates every 30 seconds for continuous monitoring
• Instant visibility into both Yes and No side spreads
• A unified dashboard that removes the need to jump across tabs

Early traders have already captured hundreds of profitable spreads that would have been nearly impossible to spot manually. Most arbitrage windows exist for only a few minutes. Oddpool watches them for you.

Access the scanner here:

• Arbitrage Scanner

We hope you give it a try!

We released two new sports market intelligence pages: NBA Champion and Super Bowl Champion.

These pages show live prediction market odds and live standings side by side, giving you a clear picture of how market sentiment aligns with on-court and on-field performance.

Explore them here:

• NBA Champion
• Super Bowl Champion

These additions expand Oddpool into sports markets and make it easier to follow how expectations develop throughout the season.

We released two new market intelligence pages: Bitcoin Peak Watch and Ethereum Peak Watch.

These pages provide a clear view of market expectations for crypto price ceilings and help you track how sentiment evolves over time.

You can explore them here:

• Bitcoin Peak Watch
• Ethereum Peak Watch

These additions expand our coverage of major market categories and bring more structure to how traders understand long-term crypto expectations.

We added volume candles to all Oddpool Market Intelligence dashboards, giving you deeper insight into market activity over time.

Volume candles help you spot shifts in participation, confirm price movements, and understand momentum across venues. This update brings more clarity to how markets behave and helps you make more informed decisions when analyzing predictions.

Today marks the official launch of Oddpool, a new way to explore and understand prediction markets.

Oddpool brings together real-time pricing from venues like Kalshi and Polymarket, giving traders and analysts a clear, unified view of how markets are moving. Our goal is to make prediction markets feel as intuitive and data-driven as traditional finance tools.

At launch, Oddpool includes:

• Fed Market Watch Dashboard: a dedicated, real-time view of FOMC rate expectations
• Cross-venue outcome normalization for consistent comparisons across markets
• A clean, fast UI designed for quick interpretation and decision making

Our goal is to build the Bloomberg for prediction markets, empowering traders, researchers, and curious observers to make sense of the world through data.