What Kalshi data does SportsStack support?

We normalize real-time event contract pricing, market data, and outcome probabilities from Kalshi's CFTC-regulated exchange. All data is mapped to our unified schema with Universal IDs for cross-referencing with traditional sports data providers.

Is Kalshi data really free?

Yes - Kalshi data is included in your SportsStack plan at no additional cost. We handle the integration, normalization, and ID mapping for you.

How often is data synced?

We sync Kalshi contract pricing and market data in near-real-time. Updates flow through our pipeline alongside data from all your other providers.

What makes Kalshi different from Polymarket?

Kalshi is a CFTC-regulated US exchange, while Polymarket is a decentralized prediction market. Through SportsStack, you can consume both through the same unified API and compare regulated vs decentralized market signals.

Can I combine Kalshi with traditional odds?

Yes. Compare Kalshi's regulated event contract pricing with sportsbook odds from Optic Odds or The Odds API, and overlay with Sportradar stats. SportsStack maps everything together with Universal IDs.

Kalshi, through one unified API.

Connect to Kalshi through SportsStack's unified schema. Switch or add providers later without rewrites.

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Kalshi data, unified

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Multi-sport

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The platform

Why through SportsStack?

One API that normalizes every provider into a single schema with Universal IDs. Integrate once, never rebuild.

Days

Not months, to integrate

— Rotobot.AI, switching to SportsStack

Rewrites to switch

Add or swap any provider

Schema for everything

Universal IDs across all providers

Learn how the Unified API works

Add a provider. Change nothing.

Same schema, same Universal IDs, same integration. Add or swap providers through SportsStack without touching your code.

	Direct API	Through SportsStack
Adding a provider	Full rebuild	Flip a switch
ID mapping	Manual	Automatic
Schema changes	Exchange-specific	We absorb
Integration time	Weeks	Hours–days
Stat verification	Single source	Cross-provider

About Kalshi

Kalshi is the first CFTC-regulated exchange in the US for event-based contracts, covering sports outcomes, economics, and current events. SportsStack normalizes Kalshi data into our unified schema alongside traditional sports data providers.

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