The Neo4j LLM Knowledge Graph Builder is a powerful tool that combines large language models (LLMs) with graph databases to transform unstructured text into interconnected knowledge graphs. It leverages the capabilities of Neo4j's graph database to store and query complex data networks, providing a robust platform for data analysis and knowledge discovery. The application supports various data sources, including PDF documents, web pages, YouTube transcripts, and more, and can be configured to tailor the graph construction process through customizable extraction schemas. It also offers advanced visualizations and interaction tools, such as Neo4j Bloom, to further explore and understand the generated knowledge graphs. The tool provides transparency into how answers are generated, allowing users to see the specific sections of documents, entities, and text chunks used to answer their questions, making the process more trustworthy and understandable. Additionally, it offers multiple retrievers that can be run in parallel to generate an answer to a question and switch between the answer results, as well as evaluation metrics across the retrievers for further analysis. The Neo4j LLM Knowledge Graph Builder represents a significant step in leveraging the power of both LLMs and graph databases to unlock the vast potential hidden within unstructured data, empowering organizations to gain deeper insights, make more informed decisions, and build intelligent applications that leverage the richness of unstructured information.