MongoDB has developed a new partnership with LangChain, a company known for its large language model application framework, to enhance their collaboration and provide developers with easier tools to build cutting-edge AI solutions. Two additional enhancements have been added to the LangChain codebase, including checkpointers that allow developers to persist graph state in MongoDB, providing a persistence layer and advantages such as human-in-the-loop interaction and memory between interactions. Additionally, a native parent child retriever has been implemented, enhancing performance by providing a broader context for LLMs to consider, allowing developers to store both parent and child documents in a single collection while only computing and indexing embedding vectors for the chunks. These new tools aim to provide a developer-friendly experience and improve the overall performance of AI solutions built on MongoDB.