FastAPI vs Fastify
On the evidence we track, FastAPI leads this comparison with a composite score of 73/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.
Capabilities
Feature-by-feature on the axes that matter for web frameworks. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
FastAPI
LeaderFastAPI is a modern web framework for constructing APIs in Python that combines high performance with developer convenience through automatic validation, interactive documentation generation, and first-class type hint support.
Fastify
A Node.js web framework optimized to handle high request volumes with minimal overhead, featuring a plugin system, JSON Schema validation, and native TypeScript support.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
- OAuth2
- JWT
FastAPI
Leader- Starlette
- Pydantic
- OpenAPI
- JSON Schema
- Swagger UI
- ReDoc
- HTTP Basic authentication
- Cookies
- Session management
Fastify
- Next.js
- Apollo Server
- Angular
- PostgreSQL
- MongoDB
- Redis
- Elasticsearch
- Swagger/OpenAPI
- WebSocket
- Helmet
- Sentry
- RabbitMQ
- CORS
- CSRF
- Kubernetes
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.