FastAPI

Pricing

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.

• FastAPI's deployment docs emphasize that production means running behind a real server or platform, not the development server, so hosting architecture is the paid component.
• ASGI workers, queue infrastructure, and database connections usually dominate the runtime budget for FastAPI services.
• AI or inference-heavy FastAPI apps should budget GPU or model-serving costs separately from the web framework itself.
• The real comparison is often Cloud Run, Fly, Render, Kubernetes, or bare VMs, because FastAPI licensing does not change across those options.

Pricing may change - verify on the official site. View official pricing

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