LangChain 0.3.0 LangChain 0.3.0 is a popular AI framework that enables developers to build applications with large language models through enhanced agent capabilities, improved memory management, and new vector store integrations. It was released on July 26, 2026, making this a major update that developers will want to integrate into their AI applications. The tutorial angle focuses on how to upgrade existing LangChain applications to 0.3.0 and leverage the new agent capabilities and memory ...