LangChain
Open-source framework for building LLM-powered applications with chains, agents, and retrieval-augmented generation
Open SourceOpen source (MIT), LangSmith free tier available, Plus $39/seat/mo, Enterprise custom APIOpen Source api
Visit LangChainAbout LangChain
LangChain is the most popular framework for developing applications powered by large language models. It provides modular components for prompt management, memory, chains, agents, and retrieval. LangSmith offers observability and testing for LLM apps, while LangGraph enables building complex multi-agent workflows. The framework supports integration with 100+ LLM providers, vector stores, and tools.
Key Features
- Chain and agent building
- RAG pipeline support
- 100+ integrations
- LangSmith observability
- LangGraph multi-agent
- Memory management
- Prompt templates
Pros
- Huge ecosystem and community
- Excellent documentation
- Rapid development of LLM apps
- Active development
Cons
- Can be over-abstracted for simple use cases
- Breaking changes between versions
- Performance overhead
Tags
llm-frameworkragagentsopen-sourcepythonjavascript
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