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Set up LangSmith for observability, evaluation, and prompt engineering. LangSmith offers Cloud, Bring Your Own Cloud (BYOC), and Self-hosted options. Choose the option that matches where your data has to live and who runs the infrastructure.
If you also want to deploy agents in production, you can use LangSmith Agent Server with Cloud, BYOC, or Self-hosted.

Cloud

Fully managed observability, evaluation, and prompt engineering.

BYOC

Full control over your data, while LangChain manages the infrastructure.

Self-hosted

Full control with observability, evaluation, and prompt engineering in your infrastructure.
Self-hosted and BYOC are available on the Enterprise plan. Get a demo to learn more.

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Compare Cloud, BYOC, and Self-hosted

Managed Deep Agents is available in public beta on Cloud and BYOC. For BYOC, use Managed Deep Agents CLI and SDK v0.10 or later. Cloud, BYOC, and Self-hosted support LangSmith Agent Server for agent workloads. Refer to the LangSmith Agent Server overview to pick a topology (Cloud managed, BYOC, Hybrid, self-hosted with control plane, or standalone).

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Common setups

  • Fastest to start, managed everything. LangSmith Cloud paired with LangSmith Agent Server on Cloud. LangChain hosts the platform, and, when you use LangSmith Agent Server, also hosts your Agent Servers.
  • Bring Your Own Cloud. Data stays in your VPC, and LangChain manages the infrastructure. Refer to the BYOC overview.
  • Observability data must stay in your infrastructure. Self-hosted LangSmith, paired with any Agent Server hosting topology, including self-hosted Agent Server hosting for agent workloads.
  • Managed observability, agents in your VPC. LangSmith Cloud paired with Hybrid LangSmith Agent Server. Traces and evaluations stay on SaaS while agent workloads stay in your infrastructure.
  • Observability only, no agent hosting. LangSmith Cloud or self-hosted, without Agent Server hosting. Run your agents wherever you already run apps and send traces to LangSmith.

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 your agent of choice via MCP for real-time answers.
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