LangChain vs LlamaIndex for AI Agents: Which Framework to Build On — AI automation guide

Langchain vs Llamaindex Agents: Comparison

Langchain vs llamaindex agents is not a contest to find a universal winner. Choose based on the hardest production problem: use LangGraph when controlled workflow state, tool calls, retries, and approvals dominate; use LlamaIndex when document ingestion and retrieval quality dominate; and use a deliberately bounded hybrid only when both are proven constraints in the same workflow. AI automation & engineering Have a workflow that should not be manual? ...

February 27, 2026 · 14 min · Arsum