How much does API development cost in the United States?

API development in the United States starts at $375 for basic REST endpoints and scales up to $3,500+ for enterprise microservice architectures.

API Development Cost in the United States

Endpoint Volume

5 Endpoints Simple API backend 8 Endpoints Standard service API 15 Endpoints Multi-resource API 30 Endpoints Enterprise microservices

Provider Tier

Freelancer $35–$55 / hr Boutique Agency $50–$80 / hr Enterprise Agency $65–$100 / hr

API Add-ons

JWT / OAuth2 Key Auth (+3 hrs)

Swagger / OpenAPI Docs (+2 hrs)

Real-time Webhook Events (+3 hrs)