For Traders & Bot Developers

Cross-platform arbitrage,
finally possible

We match the same event across Polymarket, Kalshi & more. You spot the spread instantly. Unified schema, zero event-matching code.

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Live Demo

Cross-platform price comparison

Same events, different prices. We've already matched them for you.

Arbitrage Opportunities Live

Event	Polymarket	Kalshi	Spread
Fed holds rates June	0.72	0.68	4.0%
BTC above $200k EOY	0.24	0.20	4.0%
US GDP growth > 3%	0.38	0.35	3.0%

Events are automatically matched across platforms using semantic similarity. No manual mapping required.

The Problem

Why unified data matters for trading

Without Probalytics

-3 different APIs with 3 different schemas
-Manual event matching (is "BTC $100k" the same as "Bitcoin to hit $100,000"?)
-Build and maintain your own normalization layer
-Weeks of engineering before you can even detect arbitrage

With Probalytics

+One API, one schema, all platforms
+Events automatically matched using semantic similarity
+Query cross-platform spreads with a single call
+Start detecting arbitrage in minutes, not weeks

arbitrage-bot.js

// Fetch the same event across all platforms
const res = await fetch('https://api.probalytics.io/api/v1/markets', {
  headers: { 'Authorization': 'Bearer api_xxx:sk_xxx' }
})
const { data: markets } = await res.json()
// Compare prices across platforms to spot spreads

Trading Features

Built for serious traders

Fast Data Access

REST API and SQL queries deliver the data you need in milliseconds.

Automatic Event Matching

"BTC $100k" on Polymarket = "Bitcoin to reach $100,000" on Kalshi. We link them for you.

Cross-Platform Spreads

Query price differences across platforms with a single API call.

5 Years of History

Backtest cross-platform strategies on normalized historical data since 2020.

Performance

Speed matters in trading

~5min

Probalytics API

Frequent refreshes, unified data

1-5s

API Polling

Rate limited, always behind

Variable

Direct Blockchain

Block times, reorgs, complexity

Comparison

Why traders choose Probalytics

Feature	DomeAPI	Direct APIs
Single API
Unified schema
Cross-platform event matching
Direct SQL access
5+ years historical data	Limited	Varies

Start Trading Smarter

Ready to detect cross-platform arbitrage?

Start trading with unified prediction market data today.

Cross-platform arbitrage,finally possible