Comparing
Fast, unopinionated, minimalist web framework
FastAPI framework, high performance, easy to learn, fast to code, ready for production
| Metric | express | fastapi |
|---|---|---|
| Ecosystem | npm | Python |
| Difficulty | Intermediate | Beginner ✓ |
| Weekly downloads | 95.8M↑ | 0 |
| Latest version | v5.2.1 | v0.135.2 |
| Recipes | 1 | 1 |
express only
Shared
fastapi only
Use Express for REST APIs and web servers in Node.js, especially when you value a minimal core with full control over what you add. It's the most documented Node.js framework with the largest ecosystem of compatible middleware.
Use FastAPI when building REST or GraphQL APIs in Python, especially when you need async support, automatic OpenAPI/Swagger docs, request validation, or are building microservices. It's the best choice for new Python API projects.
Express is synchronous by default and has poor built-in TypeScript support. For TypeScript-first APIs, try Fastify or Hono. For full-stack apps with server-side rendering, use Next.js. For edge/serverless, Hono's smaller footprint is better.
FastAPI is API-only — it has no templating, admin interface, or ORM. For full-stack web apps with server-rendered HTML, Django is better. For tiny internal tools, Flask's smaller learning curve might be preferable.
express
fastapi