Set up LangSmith ↗
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Documentation Index#
Fetch the complete documentation index at: https://docs.langchain.com/llms.txt Use this file to discover all available pages before exploring further.
This section covers how to host and manage LangSmith infrastructure. You can set up LangSmith for observability, evaluation, and prompt engineering, or use the full platform experience with LangSmith Deployment to also deploy and manage your applications through the UI.
Start here if you’re setting up or maintaining LangSmith infrastructure.
If you want to deploy an agent application, the Deployment section covers application structure and deployment configuration.
Choose how to set up LangSmith#
You can deploy LangSmith in one of three modes:
- Cloud: fully managed by LangChain
- Hybrid: LangChain manages the
control plane; you host the data plane - Self-hosted: you manage the full stack within your infrastructure
(Enterprise) Observability, evaluation, prompt engineering, and application deployment with your applications running in your infrastructure.
<span class=“card-start” data-card-raw=“title=“Self-hosted” icon=“server” iconType=“solid” href="/langsmith/self-hosted” cta=“Run self-hosted”"> (Enterprise) Full control with observability, evaluation, and prompt engineering. Enable the full platform experience with LangSmith Deployment or run standalone servers.
Comparison#
Refer to the following table for a comparison:
| Feature | Cloud | Hybrid | Self-Hosted |
|---|---|---|---|
| Infrastructure location | LangChain’s cloud | Split: Control plane in LangChain cloud, data plane in your cloud | Your cloud |
| Who manages updates | LangChain | LangChain (control plane), You (data plane) | You |
| Who manages CI/CD for your apps | LangChain | You | You |
| Can deploy applications? | ✅ Yes | ✅ Yes | ✅ Yes (with LangSmith Deployment enabled) |
| Observability data location | LangChain cloud | LangChain cloud | Your cloud |
| Pricing | Plus tier | Enterprise | Enterprise |
| Best for | Quick setup, managed infrastructure | Data residency requirements + managed control plane | Full control, data isolation |
You can run an Agent Server locally for free for testing and development.
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