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 ,  Latitude LLM .

  1. So is Langfuse Langfuse

    Open source LLM engineering platform

    ★ 16.5K 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.

    preview

  2. So is Latitude LLM

    Plataforma open-source de engenharia de prompts para construir, avaliar e refinar prompts de IA

    ★ 3.4K AI LLM License: LGPL-3.0

    Latitude é uma plataforma open-source para engenharia, implementação e avaliação de prompts de IA. Ajuda equipes a construir, testar e manter aplicações de IA confiáveis fornecendo um sistema completo de gestão do ciclo de vida para prompts.

    A Plataforma Open-Source de Engenharia de Prompts para construir, avaliar e refinar prompts de IA com ferramentas abrangentes.

    Latitude Screenshot