Fine-tuning` is an approach that involves supervised training of a large language model (LLM) to optimize its performance on a specific task or domain. This method adapts the internal knowledge of the LLM for a particular task, reducing hallucinations and providing more accurate outputs within its domain. However, it requires retraining the model for different tasks and domains, making it less flexible than `retrieval-augmented generation` (RAG). RAG uses an external information retrieval system to access up-to-date information from various sources like databases or APIs, allowing LLMs to tap into a vast pool of real-time data. This approach is more accurate, especially when combined with graph databases, as it provides better adaptability to new domains and evolving knowledge. Moreover, RAG offers several advantages over fine-tuning, including access to the latest information, insights into relationships and data points used by the model, and a level of explainability that fine-tuning lacks.