Every Prediction Market.
One Unified Dashboard.
Compare probabilities across Polymarket and Kalshi in real time. Spot arbitrage. Set smart alerts. Make better forecasts — without switching between five different tabs.
How It Works
Three steps to smarter forecasting
No setup needed. Browse markets instantly and upgrade as your needs grow.
Aggregate
We pull live market data from Polymarket and Kalshi every 5 minutes. Every market, every probability, every price movement — unified into one feed.
Compare
See how the same event is priced across platforms. Our fuzzy matching engine links related markets automatically so you spot mispricing fast.
Act
Set smart alerts, bookmark markets to your watchlist, and click through to trade on the platform of your choice. Your edge, your timing.
Features
Built for traders who want every edge
Professional-grade tools for prediction market traders, researchers, and forecasters.
Multi-Platform Aggregation
Probability data from Polymarket and Kalshi, with Metaculus, Manifold, and PredictIt coming soon. Free tier updates every 5 min; Pro gets real-time WebSocket.
Cross-Platform Comparison
See how the same event is priced on different platforms. Identify consensus, divergence, and mispricing instantly.
Smart Price Alerts
Set threshold alerts on any market. Get notified via email, push, or in-app when probabilities cross your targets.
Arbitrage Detection
ProAutomatically surface cross-platform price discrepancies > 5%. See the spread, the profit, and where to trade.
Smart Tags & Filtering
130+ tags across 9 categories. Filter by sport, person, country, or topic. Hierarchical drill-down (Sports → NBA → Lakers).
Full Price History
ProTradingView-powered charts with 1H to All-time views. Track probability trends, volume spikes, and market sentiment.
Live Data
markets tracked and counting
Platforms
All major platforms, one interface
We aggregate data from the top prediction market platforms so you never have to switch tabs.
Polymarket
Largest prediction market by volume. USDC-based with CFTC-regulated US access.
Kalshi
CFTC-regulated US exchange. Real-money event contracts on politics, economics, and more.
Metaculus
Community forecasting with rigorous resolution criteria and calibration tracking.
Manifold
Play-money prediction markets with the broadest range of user-created topics.
PredictIt
Political prediction market focused on US elections and government policy.
Pricing
Start free. Upgrade when you're ready.
No credit card required. Explore markets instantly, then unlock pro features when you need them.
Free
Everything you need to start exploring prediction markets.
- Up to 3 price alerts
- 2 platforms (Polymarket & Kalshi)
- 5-min delayed data
- 7-day price history
- Smart tags & category filters
- Watchlist & bookmarks
Pro
For serious traders who want every edge.
- Unlimited price alerts
- 4 platforms (+ Metaculus, Manifold)
- Real-time data via WebSocket
- Arbitrage detection & alerts
- Full price history & charts
- CSV export
- Priority support
Team
Full access for professional trading teams.
- Everything in Pro
- All 5 platforms incl. PredictIt
- REST & WebSocket API access
- Up to 10 team seats
- Custom webhooks
- White-label reports
- Dedicated support
Ready to see every market in one place?
Join thousands of traders who track prediction markets with Arbitix. Free to start, no credit card needed.
Start Exploring — Free