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Starlette 1.0.0 Released After 8 Years — FastAPI's Foundation Reaches Stability
Starlette 1.0.0 shipped on March 22, 2026, reaching its first stable release nearly eight years after creation — despite being downloaded 325 million times per month and serving as the foundational ASGI layer under FastAPI. The release is a stability milestone rather than a feature drop, primarily removing deprecated APIs, and signals that the async Python web stack is now production-stable from the ground up. Builders running FastAPI or any ASGI framework inherit this directly.
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