LangChain
✓ VerifiedFramework for building LLM applications with chains, agents, and RAG
About
LangChain is the leading open-source framework for building applications with large language models. It provides composable components for chains, agents, memory, and tool use, making it easy to build complex AI applications. With support for RAG (Retrieval Augmented Generation), multi-agent systems, and production-grade deployments via LangSmith, LangChain is the foundation for thousands of AI applications worldwide.
Key Features
- ✓Composable chains for multi-step workflows
- ✓Agent framework with tool use
- ✓RAG (Retrieval Augmented Generation)
- ✓Memory management
- ✓Multi-model support
- ✓LangSmith for observability
- ✓Production-ready components
- ✓Extensive ecosystem
Use Cases
- →RAG applications with document Q&A
- →Multi-agent systems
- →Chatbots with memory
- →Tool-using AI agents
- →Complex AI workflows
- →Production LLM applications
Technical Details
Languages
AI Models
Integrations
Frequently Asked Questions
What is LangChain?
LangChain is the leading open-source framework for building applications with large language models. It provides composable components for chains, agents, memory, and tool use, making it easy to build complex AI applications. With support for RAG (Retrieval Augmented Generation), multi-agent systems, and production-grade deployments via LangSmith, LangChain is the foundation for thousands of AI applications worldwide.
Is LangChain free?
Yes, LangChain is open source and free to use. Full framework access, All components, Community support
What programming languages does LangChain support?
LangChain supports 2+ programming languages including Python, JavaScript/TypeScript.
What AI models does LangChain use?
LangChain is powered by Any LLM via unified interface.
What platforms does LangChain support?
LangChain is available on All platforms.
What can LangChain do?
LangChain provides AI chat, agentic/autonomous mode. Key features include: Composable chains for multi-step workflows, Agent framework with tool use, RAG (Retrieval Augmented Generation).
Pricing
Free (Open Source)
$0- •Full framework access
- •All components
- •Community support
- •Production use
LangSmith (Optional)
$39-99+/month- •Observability
- •Testing
- •Monitoring
- •Team collaboration
Company
- Name
- LangChain (Harrison Chase)
- Founded
- 2022
- Location
- San Francisco, CA
- Users
- Hundreds of thousands of developers
Links
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