Our take
Pick LangGraph if engineers who will stay on OSS + LangSmith Developer at $0/seat (5k traces) while they open a first _start_ → agent graph, then Plus at $39/seat when they need 10k traces and extra seats — not Enterprise first unless they need SSO / ABAC. Pick LlamaIndex if builders wiring RAG or document extraction who will use the MIT library and/or LlamaParse credits. Skip LlamaIndex if people who only want a
Best for
LangGraph A graph you run at a public $
LlamaIndex Connect an LLM to your documents
Free plan
LangGraph $0 · mIT on langchain-ai/langgraph
LlamaIndex $0 · mIT. You bring the model
Lowest paid
LangGraph LSU $1.00
LlamaIndex Credit rate $1.25
Next step up
LangGraph LangSmith Plus $39
LlamaIndex Starter $50/mo
Coding agent
LangGraph Graph canvas
LlamaIndex Agents builder
Runs where
LangGraph
LlamaIndex Local or hosted
Watch out
LangGraph Studio + traces are LangSmith
LlamaIndex LlamaParse is not MIT
Last checked
LangGraph 2026-10-23 · langchain.com/pricing
LlamaIndex 2026-10-19 · llamaindex.ai/pricing
engineers who will stay on OSS + LangSmith Developer at $0/seat (5k traces) while they open a first _start_ → agent graph, then Plus at $39/seat when they need 10k traces and extra seats — not Enterprise first unless they need SSO / ABAC.
Read the LangGraph pagebuilders wiring RAG or document extraction who will use the MIT library and/or LlamaParse credits.
Read the LlamaIndex page
