High-performance Python web framework — async-native, auto-documented, built for modern APIs.
FastAPI is my Python framework of choice for building production APIs. Its async/await support with Starlette, automatic OpenAPI/Swagger docs, and Pydantic-based validation make it incredibly productive. I use it for AI/ML service endpoints, microservices, and real-time data pipelines. The type-hint-driven approach catches bugs at development time while generating full API documentation automatically.