Langfuse vs LangSmith
Last verified:
Best overall: Langfuse
Best for LangChain users: LangSmith
Cheapest self-hosted: Langfuse
Best agent-readiness: Langfuse
| Langfuse | LangSmith | |
|---|---|---|
| Agent-readiness | 85/100 | 82/100 |
| Starting price | $29/monthly | $39/monthly |
| Self-serve (no sales call) | Yes | Yes |
| Official MCP server | Yes | Yes |
| Open source | Yes | No |
FAQ
Is Langfuse or LangSmith open source?
Langfuse's core is open source (MIT) and free to self-host. LangSmith is not open source, though LangChain's client SDKs are.
Do both have an official MCP server?
Yes — Langfuse publishes langfuse/mcp-server-langfuse and LangSmith publishes langchain-ai/langsmith-mcp-server.
Which scores higher on Crail's agent-readiness score?
Langfuse scores 85/100 vs LangSmith's 82/100 — both score well; Langfuse edges ahead on transparency and self-hosting options.