About LangChain
LangChain maintains open-source frameworks for building agents, including langchain, langgraph and deepagents. Its LangSmith platform adds observability, evaluation and deployment. LangChain and LangGraph both reached version 1.0 in late 2025.
Key Features
Open-source agent frameworks
Low-level control with langgraph
Observability and evaluation
Managed agent deployment
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Launch Details
Category
Website
Pricing
Freemium
Launch Date
October 19, 2026
About the Creator
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