LangSmith vs Langfuse
| LangSmith | Langfuse | |
|---|---|---|
| Summary | Observability, evaluation and tracing platform for LLM apps and agents. | Open-source LLM engineering platform: tracing, evals, prompt management. |
| Category | Agent Infrastructure | Agent Infrastructure |
| Platforms | Cloud | Self-host, Cloud |
| Pricing | Freemium | Open source + paid cloud |
| Official site | https://www.langchain.com/langsmith | https://langfuse.com |
Which should you choose?
Choose LangSmith if its approach (Cloud; Freemium) fits your stack. Choose Langfuse if you prefer Self-host, Cloud and open source + paid cloud. Try both on a small task before you commit.