Pick LangChain if
engineers building agents in Python or JS who will read traces when something breaks.
Read the LangChain pageLangChain vs Zep
Our take
Pick LangChain if engineers building agents in Python or JS who will read traces when something breaks. Pick Zep if teams shipping agents that must remember users across sessions and will stay inside a monthly credit pool. Skip LangChain if no-code ops teams (Zapier / Make) or people who only want a visual canvas (Langflow / Dify).
Best for
LangChain Engineers building agents in Python or JS who will read traces when something breaks
Zep Store episodes and retrieve a Context Block on the next turn
Free plan
LangChain $0 · langChain / LangGraph: no license fee. You pay model providers
Zep $0 · 10,000 credits / month. 2 projects; 1 Context MCP Server seat; 5 custom entity / edge types. Credits skip rollover and auto-top-up
Lowest paid
LangChain LangSmith Plus $39/mo
Zep Flex Plus $375, monthly only
Coding agent
LangChain OSS libraries
Zep Context MCP Server
Runs where
LangChain Hosted
Zep Hosted
Watch out
LangChain OSS is not a studio
Zep Credits meter Episode size
Last checked
LangChain 2026-10-19 · langchain.com/pricing
Zep 2026-10-22 · getzep.com/pricing
Which one, then?
Pick Zep if
teams shipping agents that must remember users across sessions and will stay inside a monthly credit pool.
Read the Zep page