alternative · langsmith

Open Source LangSmith Alternatives

Open source LangSmith alternatives that trace, evaluate, and debug LLM applications on your own infrastructure — capturing prompts, traces, and evaluations without LangSmith's per-seat pricing or sending production data to a hosted-only service.

Tools that replace LangSmith

3 tools

// open source tools you can use instead

llm-observability

Arize Phoenix_

Self-hosted LLM tracing and evals — a LangSmith alternative.

Dify_

Build LLM apps and agents with RAG and LLMOps.

Langfuse_

Open source LLM observability — a LangSmith alternative.