// freeCodeCamp · 13 March 2026

How to Build End-to-End LLM Observability in FastAPI with OpenTelemetry

This article shows how to build end-to-end, code-first LLM observability in a FastAPI application using the OpenTelemetry Python SDK. Instead of relying on vendor-specific agents or opaque SDKs, we wi

freeCodeCamp

@freecodecamp · Jessica Patel

www.freecodecamp.org

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