Directory / LangSmith
LangSmith
Verified
LangChain commercial tracing, evaluation, and prompt platform.
LangSmith is LangChain's observability and evaluation product. It traces runs, stores datasets, and hosts experiments. LangGraph is a different product, with self-hosting tied to enterprise terms for LangSmith.
- Model support
- Multi-model
- Deployment
- Cloud, Self-hosted
- Open source
- No
- License
- Proprietary
- Pricing model
- Mixed
- Added / updated
- 19 Aug 2026 / 19 Aug 2026
www.langchain.com/langsmith · Docs
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.
Strengths
- Tracing, dataset, and evaluation workflows in one service.
- Tight LangGraph integration if you use that runtime.
- Team features for prompt/eval collaboration.
Limitations
- Proprietary. Self-host is not the default.
- Gravity well toward the LangChain stack.
- Different job from LangGraph: observability and evaluation, with no orchestration.
Compare
- vs langfuse : Open-source observability compared with a LangChain-based control plane.