LangChain
langchain.comObserve, evaluate, and deploy reliable AI agents at every stage.
AI Toolsai-agentsllmobservabilityevaluationdeveloper-platformopen-sourcelangsmith
About
LangChain provides an agent engineering platform called LangSmith alongside open-source frameworks for building, testing, and deploying AI agents. LangSmith offers observability, evaluation, and deployment tooling that is framework-agnostic and supports multiple languages. It also includes Fleet, an enterprise product for running autonomous agents across business tools.
Problem
Building, debugging, and iterating on AI agents is difficult due to complex logic, long contexts, and unpredictable failures in production.
For
AI developers and engineering teams building production AI agents
How it works
LangSmith traces agent runs into structured timelines, enables evaluation with human and automated scoring, and provides a scalable deployment runtime with memory and checkpointing; open-source frameworks accelerate agent construction.
Business model
freemium
Status
launched
Company
LangChain, Inc.