Best Open Source LangSmith Alternatives

Langfuse provides tracing, evaluations, prompt management, and analytics to debug and improve LLM applications.

Open-source platform for LLM tracing, evaluation, and optimization. Features automatic instrumentation, prompt playground, and real-time AI application monitoring.

Open-source observability platform for LLMs using OpenTelemetry. Monitor performance, track costs, and debug AI applications with just 2 lines of code.

Open-source platform for logging, monitoring, and debugging LLM applications. Route, debug, and analyze AI apps with comprehensive observability tools.

Open-source LLMOps platform providing prompt management, evaluation, and observability tools for building robust AI applications with team collaboration.

Open-source observability platform for GenAI and LLM applications. Real-time monitoring, distributed tracing, prompt management, and AI model evaluation built on OpenTelemetry.