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Best LangChain Alternatives

4 alternatives to LangChain in AI Agents, compared by pricing, DX grade, security, and vendor lock-in.

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#1

CrewAI

Multi-agent orchestration, role-based agents

Price vs LangChain
Free (OSS)
DX Grade
B
Security
C
Lock-in Risk
Low (1/10)
#2

LlamaIndex

RAG-focused, data connectors, index management

Price vs LangChain
Free (OSS)
DX Grade
B
Security
B
Lock-in Risk
Low (1/10)
#3

Vercel AI SDK

Next.js/React streaming, multi-provider, TypeScript-native

Price vs LangChain
Free (OSS)
DX Grade
A
Security
B
Lock-in Risk
Medium (3/10)
#4

Mastra

TypeScript-first agents, workflows, tool use, RAG

Price vs LangChain
Free (OSS)
DX Grade
A
Security
B
Lock-in Risk
Low (1/10)