FastAPI

reflex

“Reflex backends use FastAPI for fast state updates, file uploads and api routes.”

Polar

“We love building our API with FastAPI. We can focus on writing business logic vs. boilerplate and get an OpenAPI schema automatically – enabling seamless creation and automation of client SDKs.”

NeuralAgent

“A great and fast python framework for building APIs.”

Warestack

“FastAPI's async-first architecture with Pydantic validation and automatic OpenAPI generation helped a lot without implementing things manually. We're handling thousands of concurrent requests with really good response times. The dependency injection makes our service layer clean, while the built-in middleware stack handles CORS, authentication, and request context out of the box. Also, the automatic type checking and validation have caught bugs before they hit production.”

GAIA

“Insanely sped up our execution speed for developing the backend”

Cure AI

“FastAPI stood out over Flask with its built-in features like automatic documentation and async support. It made developing Cure AI’s backend faster and more streamlined while keeping the codebase clean and easy to manage.”

Permit.io

“As a Python-based product, FastAPI gave us the best capabilities to create an API-based low-code product.”

Writesonic

“Very good backend framework.”

Glazed

“Making API's has never been so simple, FastAPI has definitely saved us plenty of hours of development!”

Small Hours

“We love building our APIs with FastAPI. It streamlines development by handling much of the boilerplate, allowing us to focus on business logic.”

Smart Chrome Tabs

“Running fast on FastAPI on the Backend. Keep it easy and start building!”

Atlas.co

“Allows us to build fast APIs with great performance while maintaining high dev freedom”

Ranova

“We use FastAPI for our API written in Python. The tool is very easy to use and we believe this is part of the best combination for SaaS development.”

Swipeart

“To connect MySQL to the app”

AiTerm

“Modern and fast web framework, with automatically generated documentations.”

DropIT

“Simple and modern web development framework that matches my use case.”

SplitHub.io

“We chose FastAPI for its incredible speed and performance, allowing us to deliver lightning-fast responses and a seamless user experience.”

Viral Insight

“Let me create the backend Python API incredibly fast.”

Zenkan

“Switched from Flask to FastAPI because I found myself mainly using API endpoints with my Svelte SPA, also FastAPI's docs were way better, clearer and more didactic, than Flask's, especially for the beginner that i was. Felt like FastAPI's docs were actually treating me like a human, and I thank them for that.”

“Not as easily extendable like Flask but smooth and modern.”

“Boasts high performance with asynchronous capabilities, ideal for API development.”

“I don't really think about the fastapi very much in the project, which I think is the whole point. It's easy to generate a typed API client, and easy to keep the project organized. It sufficiently just works that I will continue to reach for it.”

“Helped me build a robust backend to handle requests.”