Retrieval-Augmented Generation (RAG) is an AI technique that combines large language models with external data retrieval. Instead of relying solely on pre-trained knowledge, RAG fetches relevant documents or facts during generation to produce more accurate, up-to-date, and context-aware responses.
RAG operates in two steps: first, it retrieves relevant information from a database or knowledge source based on the input query. Then, the language model conditions its generation on both the query and retrieved content. This integration allows the model to ground its answers in real data, improving relevance and precision without retraining the entire model.
For AI product managers, RAG enhances user trust by providing fact-based answers and reduces model size by offloading knowledge storage. It improves scalability and keeps AI systems current, lowering latency and operational costs while enabling complex, dynamic applications in search, support, and recommendation tools.