How Much Do Prediction Market APIs Cost?
Prediction market API pricing varies widely — from free tiers for read-only data access to enterprise revenue-share models for full white-label integration. Here's what operators should expect.
Prediction market API costs range from free (read-only data feeds) to custom enterprise pricing (full trading infrastructure). The cost depends on whether you're consuming data, routing trades, or running your own white-label prediction market vertical.
Pricing Tiers in the Market
Tier 1: Free / Read-Only Data
Cost: $0
Several prediction market platforms offer free API access for reading market data:
- Polymarket — Free public API for market prices, volumes, and outcomes
- Manifold Markets — Free API with generous rate limits
- Metaculus — Free API for community forecasts
These are useful for displaying prediction market prices on your platform (like showing election odds or event probabilities) but don't allow you to route customer trades. You're consuming data, not operating a market.
Limitation: You can't build a betting product on read-only APIs. Your customers can see prices but can't trade.
Tier 2: Trading API Access
Cost: $500–$5,000/month + per-trade fees
Platforms that allow programmatic trading typically charge:
- Monthly subscription for API access and support
- Per-trade fees (typically 1-3% of trade value) or spread markup
- Volume-based tiers with lower per-trade costs at higher volumes
Kalshi offers API trading access with exchange fees on each contract. Most regulated prediction market exchanges follow a similar model.
This tier suits operators who want to offer prediction market products but are comfortable sending trades to an external exchange.
Tier 3: White-Label Infrastructure
Cost: $5,000–$50,000+/month or revenue share
Full infrastructure for running your own prediction markets under your brand:
- Market creation engine — Create custom markets programmatically
- LMSR or order book matching — Your own pricing and liquidity
- Settlement automation — Resolve markets with configurable data sources
- Risk management — Position limits, exposure monitoring, dynamic liquidity
- Compliance tooling — KYC/AML integration, regulatory reporting
Pricing at this tier is typically negotiated based on projected volume. Revenue-share models (5-15% of gross trading revenue) are common, sometimes with a minimum monthly commitment.
What Drives the Cost
| Factor | Impact on Price |
|---|---|
| Read vs. Write access | Read-only is cheap/free; trade execution costs money |
| Liquidity source | Using the provider's liquidity pool costs more than BYOL (bring your own liquidity) |
| Market creation | Consuming existing markets is cheaper than creating custom ones |
| Volume commitments | Higher guaranteed volume = lower per-unit cost |
| Regulatory support | Licensed, regulated infrastructure costs more but reduces your compliance burden |
| SLA requirements | 99.9%+ uptime SLAs with dedicated support add to enterprise pricing |
Hidden Costs to Watch For
Liquidity subsidies: If you're running LMSR markets, the operator subsidizes liquidity. This isn't an API cost — it's the operational cost of offering liquid markets. For a binary market with liquidity parameter b=1000, your maximum exposure per market is about $693 (b × ln(2)). Scale that across hundreds of markets and it adds up.
Data costs: Real-time resolution data (sports scores, election results, financial data) for automated settlement often requires separate data provider subscriptions.
Compliance overhead: Operating prediction markets may require specific gambling or derivatives licenses depending on jurisdiction. Legal and licensing costs can dwarf API fees.
What Operators Should Consider
Before comparing API prices, clarify your integration model:
- Affiliate/display model — Just showing prediction market odds? Free APIs work fine.
- Brokerage model — Routing trades to an exchange? Budget for per-trade fees.
- White-label model — Running your own markets? Budget for infrastructure + liquidity + compliance.
The API cost itself is usually the smallest line item. Liquidity, compliance, and customer acquisition drive the real economics of prediction market products.
Adkuu Pulse offers B2B prediction market infrastructure with transparent per-market pricing, configurable liquidity parameters, and no hidden data fees — designed for iGaming operators who want to add prediction markets as a new vertical without building from scratch.
Last verified: March 2026