Set up LangSmith
Set up LangSmith for observability, evaluation, and prompt engineering. LangSmith offers two hosting models: fully managed Cloud, or Self-hosted (Enterprise) for full control.If you also want to deploy agents in production, you can use LangSmith Deployment with either hosting model.Cloud
Fully managed observability, evaluation, and prompt engineering.
Self-hosted
(Enterprise) Full control with observability, evaluation, and prompt engineering in your infrastructure.
Self-hosted is available on the Enterprise plan. Get a demo to learn more.
Compare Cloud and Self-hosted
| Feature | Cloud | Self-hosted |
|---|---|---|
| Infrastructure location | LangChain’s cloud | Your infrastructure |
| Who manages updates | LangChain | You |
| Observability data location | LangChain cloud | Your infrastructure |
| Pairs with LangSmith Deployment | Yes | When you enable LangSmith Deployment |
| Pricing | Plus tier | Enterprise |
| Best for | Quick setup, managed infrastructure | Full control, data isolation |
Common setups
- Fastest to start, managed everything. LangSmith Cloud paired with LangSmith Deployment on Cloud. LangChain hosts the platform, and, when you use LangSmith Deployment, also hosts your Agent Servers.
- Observability data must stay in your infrastructure. Self-hosted LangSmith, paired with any LangSmith Deployment topology, including self-hosted LangSmith Deployment for agent workloads.
- Managed observability, agents in your VPC. LangSmith Cloud paired with Hybrid LangSmith Deployment. Traces and evaluations stay on SaaS while agent workloads stay in your infrastructure.
- Observability only, no agent hosting. LangSmith Cloud or self-hosted, without LangSmith Deployment. Run your agents wherever you already run apps and send traces to LangSmith.
Related
Account setup
Create an account, manage API keys, and choose a pricing tier.
Plans and pricing
Compare LangSmith plans and tiers.
Observability
Trace and monitor your LLM applications.
Connect these docs to Claude, VSCode, and more via MCP for real-time answers.