OpenTelemetry for model calls, so traces land in the tooling you already run. Built by Traceloop.
Others in observability
Common questions
Is OpenLLMetry free to use?
OpenLLMetry is open source and free to run yourself. You still pay whichever model provider you point it at, and this tutorial is free with no signup.
Do I need to know Python to use OpenLLMetry?
Basic Python is enough. Functions, dictionaries and imports cover most of what OpenLLMetry asks of you.
When should I not use OpenLLMetry?
When something else in observability fits the job better. The others in that group are listed below.
Lessons for OpenLLMetry are being written. Meanwhile the APIs for AI tutorial covers the same ground: state, tools, loops, memory and human approval. Most of it carries straight over.
Start the APIs for AI tutorial →