LangChain
Adopt
Update 07/2026: With LangChain 1.0 (GA October 2025) the framework was consolidated around agents (announcement):
create_agentis the new standard abstraction, running on the LangGraph runtime.- A middleware system covers cross-cutting concerns like human-in-the-loop, summarization and PII redaction.
- Standardized content blocks across model providers; legacy chains moved to
langchain-classic. - Stability commitment: no breaking changes until 2.0.
Documentation moved to docs.langchain.com - the python.langchain.com links in our previous entry are partially dead.
Adopt
LangChain is a comprehensive framework for developing applications powered by language models, focusing on composability and production-readiness. It has evolved from a simple library to a complete ecosystem for building reliable AI applications.
Key Features
- Modular Components: Pre-built components for common LLM application patterns
- Production-Ready Tools: Built-in observability, evaluation, and testing capabilities through LangSmith
- Agent Development: Advanced agent architectures. Also through LangGraph.
- Enterprise Features: security, monitoring, and scaling capabilities