Overview
LangChain — Best framework for building production LLM applications.
LangChain is the most popular framework for building LLM-powered applications. It provides chains, agents, tools, memory, and integrations with 100+ LLM providers and vector stores.
Chains and agents for LLM orchestration
100+ LLM and embedding providers
Vector store integrations
RAG (retrieval-augmented generation)
Features & capabilities
Everything it does, in plain English.
FeatureChains and agents for LLM orchestrationIncluded
Feature100+ LLM and embedding providersIncluded
FeatureVector store integrationsIncluded
FeatureRAG (retrieval-augmented generation)Included
FeatureLangSmith for observabilityIncluded
FeatureLangGraph for agent state machinesIncluded
API AccessProgrammatic access available for developers.Available
PlatformsPython · TypeScript
The honest take
Where it shines, where it stumbles.
✓ Pros
- ✓Largest LLM framework ecosystem
- ✓Comprehensive documentation
- ✓LangSmith for debugging and evaluation
! Watch-outs
- !Steep learning curve
- !Abstractions can hide important details
- !Version changes can break code
Who it's for
Where LangChain pays for itself fast.
— Use case
Build RAG applications over documents
— Use case
Create conversational AI with memory
— Use case
Orchestrate multi-step AI workflows
— Use case
Build autonomous AI agents
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