LangSmith is a platform for building production-grade LLM applications. It allows you to closely monitor and evaluate your application, so you can ship quickly and with confidence.
LangSmith is framework-agnostic — it can be used with or without LangChain’s open source frameworks langchain and langgraph.If you are using either of these, you can enable LangSmith tracing with a single environment variable. For more see the how-to guide for setting up LangSmith with LangChain or setting up LangSmith with LangGraph.

Start tracing

Gain visibility into each step your application takes when handling a request to debug faster.

Evaluate your application

Measure quality of your applications over time to build more reliable AI applications.

Test your prompts

Iterate on prompts, with automatic version control and collaboration features.

Set up your workspace

Set up your workspace, configure admin settings, and invite your team to collaborate.