See how PredictAPI compares to building your own prediction market platform like Kalshi, Polymarket, or Metaculus
Building a prediction market engine in-house requires order-book algorithms, real-time price feeds, settlement logic, regulatory considerations, and ongoing maintenance. PredictAPI handles all of this, so you can focus on what matters: your users and your product.
Kalshi built a CFTC-regulated exchange from scratch. You don't need to. PredictAPI gives you the same order-book matching, binary event contracts, and settlement engine — white-labeled under your brand.
Polymarket pioneered on-chain prediction markets. PredictAPI brings the same UX and market mechanics, but without requiring blockchain integration. Support any currency, any payment method.
Metaculus excels at forecasting questions. PredictAPI turns forecasts into tradeable markets where your users put real money behind their predictions, creating deeper engagement and revenue.
| Feature | Build In-House | PredictAPI |
|---|---|---|
| Time to Market | 6-12 months | Days |
| Development Cost | $500K-2M+ | From $5K/mo |
| Order Matching Engine | Build & maintain | Included |
| Real-Time WebSocket Feeds | Build & scale | Included |
| Auto Settlement | Build & audit | Included |
| Embeddable Widget | Build from scratch | One-line embed |
| Ongoing Maintenance | Your team | Managed for you |
A prediction market is an exchange where participants trade contracts on the outcome of future events. Each contract pays out $1 if the event occurs and $0 otherwise. The price of each contract reflects the market's collective probability estimate for that event. Platforms like Kalshi, Polymarket, and PredictAPI power these markets with matching engines, order books, and settlement systems.
Kalshi is a CFTC-regulated exchange that operates its own consumer-facing platform. PredictAPI provides the same underlying technology — order matching, binary contracts, real-time pricing, and auto-settlement — as a white-label B2B API. Instead of competing with Kalshi for end users, PredictAPI empowers partners to build their own prediction market experiences under their own brand.
Polymarket pioneered crypto-native prediction markets using on-chain settlement. PredictAPI delivers the same user experience and market mechanics without requiring blockchain infrastructure. Partners can support any currency (USD, EUR, TRY, crypto), any payment method, and any regulatory framework — all through a simple REST API and embeddable widget.
PredictAPI offers a developer-friendly REST API with comprehensive documentation, WebSocket feeds for real-time price updates, and an embeddable widget for zero-code integration. Place orders, manage positions, configure markups, and receive settlement webhooks — all with a single API key. Get started in days, not months.
Skip months of development. Start integrating prediction markets into your platform today.
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