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Platform setup

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Set up LangSmith

Overview

Account

Cloud

Self-hosted

Set up LangSmith

This section covers how to host and manage LangSmith infrastructure for observability, evaluation, and prompt engineering.

Choose how to set up LangSmith

Deploy LangSmith in one of two modes:

Cloud

Fully managed observability, evaluation, and prompt engineering.

Get started

Self-hosted

(Enterprise) Full control with observability, evaluation, and prompt engineering in your infrastructure.

Run self-hosted

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
Can deploy agents?	✅ Yes	✅ Yes (with LangSmith Deployment enabled)
Observability data location	LangChain cloud	Your infrastructure
Pricing	Plus tier	Enterprise
Best for	Quick setup, managed infrastructure	Full control, data isolation

To self-host Agent Servers for LangSmith Deployment (which deploys and runs agents in production), refer to the Hybrid page—a platform setup option that runs Agent Servers in your infrastructure while sending traces to either Cloud or Self-hosted LangSmith.

Related

Account setup

Create an account, manage API keys, and choose a pricing tier.

Set up your account

Plans and pricing

Compare LangSmith plans and tiers.

View pricing

Observability

Trace and monitor your LLM applications.

Learn more

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