LangSmith

A linear, one-concept-per-lesson path through LangSmith: tracing, evaluating, and monitoring the agents built in the LangChain and LangGraph courses, in production. 23 lessons · 3 tiers.

Prerequisites: Completion of LangChain & Agent Building and LangGraph, or already comfortable with agents, tools, and graphs. This course traces and evaluates those agents rather than re-teaching them.

Lessons use Google's Gemini free tier (gemini-3.5-flash-lite), the same model as the other two courses. LangSmith itself is free to sign up for at smith.langchain.com and has a generous free tier for personal learning.

Built on LangSmith, the platform this course teaches.