FastAPI, Django, NestJS & More

FastAPI has overtaken Django in adoption among Python web developers, now used by an estimated 38-40% of them, driven largely by its performance and native fit for AI-integrated backends. Built on Starlette and Pydantic, FastAPI handles roughly 30,000-40,000 requests per second compared to Django’s 8,000-12,000, and its async-first, ASGI-based architecture processes concurrent I/O-bound requests, like LLM API calls or streaming responses, far more efficiently than Django’s WSGI foundation can without significant workarounds. 

For teams building API-first products, inference services, or anything that touches machine learning, FastAPI has become the default starting point rather than an alternative worth considering.

Also Read: Best Java Frameworks for Web and Backend Development in 2026