LangChain celebrated its first anniversary, marking a year of significant growth and collaboration in the field of Generative AI. Over 2,000 developers contributed to its Python and JavaScript libraries, with more than 20 million developers downloading the open-source package to create over 30,000 applications. The platform has integrated with a wide array of tools, including 150 document loaders, 70 language models, and numerous vector stores, embedding models, and chat models. The community-driven Prompt Hub has seen the addition of hundreds of prompts, enhancing the ecosystem. Contributions from key developers and educators have been acknowledged, alongside influential papers that have propelled the understanding of Generative AI. The LangChain team expressed gratitude to its global community for their support and innovation, highlighting the collaborative efforts that have driven LangChain's success in its inaugural year.