LLMs & AI Infra AI Agent Framework stable
LangChain
Framework for LLM-powered applications
100.0K stars
3.0K contributors
Since 2022
The most popular framework for building LLM applications with chains, agents, tools, memory, retrievers, and extensive integrations for RAG and agentic workflows.
License
MIT
Min RAM
512 MB
Min CPUs
1 core
Scaling
single_node
Complexity
intermediate
Performance
medium
Self-hostable
✓
K8s native
✕
Offline
✕
Pricing
fully free
Docs quality
good
Vendor lock-in
none
Use cases
- ✓ Build RAG systems for document Q&A
- ✓ Create AI agents with tool access
- ✓ Chatbot with memory and context
- ✓ Multi-step reasoning workflows
- ✓ Document processing and extraction pipelines
Anti-patterns / when NOT to use
- ✕ Abstractions can hide important details
- ✕ Rapid API changes cause version friction
- ✕ Can be overkill for simple LLM calls
- ✕ Performance overhead for high-throughput
Integrates with
Complements
Compare with alternatives
Replaces / alternatives to
Technical specs
Language
PythonTypeScript
API type
SDK
Protocols
HTTP
Deployment
pipnpm
SDKs
pythonjavascript
Community
GitHub stars 100.0K
Contributors 3.0K
Commit frequency daily
Plugin ecosystem massive
Backing LangChain Inc
Funding vc_backed
Release
Latest version
— Last release —
Since 2022
Best fit
Team size
solosmallmediumenterprise
Industries
generalsaasfintechhealthcarelegaleducation