Editorial take
Why it stands out
FastAPI is free software, but it can still lead teams into expensive runtime choices if they conflate the framework with the cost of Python API hosting. The catalog should keep those apart.
Tool profile
Python API framework built around type hints, automatic docs, and high-performance async request handling.
High-throughput JSON and ML inference APIs
Modern Python API framework built on Starlette and Pydantic: automatic OpenAPI docs, async routes, and typing-first validation.
FastAPI is published under the MIT License. You pay for async-capable hosting, worker processes, and databases—not a framework royalty. Pair with Uvicorn, Gunicorn+Uvicorn workers, or managed platforms that speak ASGI.
Choose FastAPI when typed request/response models and OpenAPI clients matter; choose Django when admin and server templates dominate.
Quick fit
Editorial take
FastAPI is free software, but it can still lead teams into expensive runtime choices if they conflate the framework with the cost of Python API hosting. The catalog should keep those apart.
What it does well
Primary use cases
Fit notes
Pricing snapshot
FastAPI's official repository states that the project is licensed under the MIT license. There is no FastAPI license fee; the actual spend comes from ASGI hosting, worker processes, databases, and whatever observability or inference infrastructure sits behind the API.

Apollo GraphQL
Free planGraphQL federation, routing, and schema governance
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Choose Apollo when GraphQL has become important enough to need governance, routing, and federation workflows.