LangChain is listed under Agent Frameworks (Developers), in the AI Agents & Automation category on Flocci AI Tools. MIT-licensed framework of model, tool and retrieval integrations for agents. It is free, with no paid plan attached, and it lives at langchain.com.
LangChain is listed as fully free — there is no paid tier attached to it in the catalog. That makes it one of the 399 entries on Flocci AI Tools with no upgrade path built in.
LangChain does 3 things the catalog singles out: Mit-licensed framework of model, tool and retrieval integrations for agents; python and javascript versions; pairs with langgraph and langsmith (separate free tier).
Agno is the closest free alternative: it sits in the same Agent Frameworks (Developers) sub-category and is free. AWS Strands Agents, CAMEL and Claude Agent SDK also start free. The full list is on the alternatives page.
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