Compare / Langfuse vs LangSmith
Langfuse vs LangSmith
Open-source observability compared with a LangChain-based control plane.
This page compares the structured fields and assessments for two listings.
It does not assign a score. Fields were last checked on each listing’s
verifiedAt date.
| Langfuse Verified | LangSmith Verified | |
|---|---|---|
| Tagline | Self-hostable open-source LLM and agent observability. | LangChain commercial tracing, evaluation, and prompt platform. |
| Layers | Observability, Verification | Observability, Verification |
| Model independence | Multi-model | Multi-model |
| Deployment | Cloud, Self-hosted | Cloud, Self-hosted |
| Open source | Yes | No |
| License | MIT (see repo for any enterprise modules) | Proprietary |
| Pricing model | Mixed | Mixed |
Langfuse
Assessment
Langfuse provides observability for self-hosted factories. Traces gain operational value when connected to pull requests, evaluations, and delivery outcomes; the trace store alone lacks those controls. The core is MIT-licensed, with cloud optional.
LangSmith
Assessment
LangSmith suits LangChain runtimes that need a hosted control plane. Compare it with Langfuse on deployment, data handling, and evaluation workflow instead of dashboard appearance. Customer logos are not independent evidence.