Sure, Langsmith is awesome.

But have you considered these open source alternatives?

They are free, self-hostable and community-driven.

Check by yourself: Langfuse  Langfuse .

  1. So is Langfuse Langfuse

    Open source LLM engineering platform

    ★ 9.9K AI LLM Monitoring Observability License: MIT Expat

    Langfuse is an open source LLM engineering platform. It helps teams collaboratively develop, monitor, evaluate, and debug AI applications. Langfuse can be self-hosted in minutes and is battle-tested.

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