Now in Private Beta

Prediction market data.
All platforms. One API.

Probalytics aggregates, normalizes, and streams data from Polymarket, Kalshi, and more — so you can build trading bots, dashboards, and research tools without the infrastructure headache.

Get Started See how it works

Fed cuts rates JanKalshi0.12-2.1%

BTC above $150k EOYPolymarket0.31+3.4%

Recession in 2025Kalshi0.18-0.8%

AI model beats bar examPolymarket0.76+1.2%

Tesla stock above $500Kalshi0.42+2.7%

Fed cuts rates JanKalshi0.12-2.1%

BTC above $150k EOYPolymarket0.31+3.4%

Recession in 2025Kalshi0.18-0.8%

AI model beats bar examPolymarket0.76+1.2%

Tesla stock above $500Kalshi0.42+2.7%

0.0K+

Markets indexed

0.0B+

Volume tracked (USD)

0.0ms

Avg latency

0.0%

Uptime target

The Problem

Prediction market data is a mess

Every platform has different APIs, formats, and quirks. Building reliable data infrastructure yourself takes months.

Fragmented

Different APIs, auth methods, and data formats.

Slow

Polling APIs isn't real-time. Always behind.

Incomplete

Historical data is hard to find and trust.

Complex

Blockchain indexing and reorg handling.

The Solution

Everything you need, unified

We handle the complexity. You get clean, real-time data through a single API.

Unified Schema

One consistent data model across all platforms. No more juggling different formats.

Real-Time SSE

Sub-10ms event streaming. Prices, trades, resolutions — instant delivery.

Historical Data

Complete trade history since 2020. Parquet files on S3 for bulk access.

SQL Access

Query billions of rows directly via ClickHouse. In-browser or any SQL client.

Vector Search

Find similar markets instantly with embedding-based semantic search.

Simple API

Clean REST endpoints. Just fetch the data you need.

View all features

Developer Experience

Start building in minutes

Get your API key and start fetching data. Simple REST endpoints and real-time streaming via SSE.

Get your API key

Make a request

Simple fetch calls to our REST API

Start streaming

Real-time data via Server-Sent Events

app.js

// Fetch markets from the API
const response = await fetch('https://api.probalytics.io/v1/markets', {
  headers: { 'Authorization': 'Bearer pk_...' }
})
const { data } = await response.json()

// Stream real-time price updates
const events = new EventSource(
  'https://api.probalytics.io/v1/stream?token=pk_...'
)
events.onmessage = (e) => {
  const { market, price } = JSON.parse(e.data)
  console.log(market, price)
}

Coverage

All major platforms, one API

Platform	Status	Markets	Since
Polymarket	Live	60K+ total	2020
Kalshi	Live	70K+ total	2021
PredictIt	Soon	—	—
Metaculus	Soon	—	—
Manifold	Soon	—	—

Use Cases

Built for builders

Whether you're building trading bots, research tools, or analytics platforms — we've got you covered.

Trading Bots

Automated strategies across all platforms with real-time data.

Research

Years of historical data for academic and market research.

Dashboards

Build live visualizations and monitoring tools.

Explore use cases

Now Available

Ready to get started?

Start building with unified prediction market data today.

Prediction market data.All platforms. One API.