In the video “The Best RAG Technique Yet? Anthropic’s Contextual Retrieval,” the channel Prompt Engineering discusses a new retrieval mechanism called contextual retrieval, developed by Anthropic. This technique combines chunking strategies with re-ranking to enhance retrieval accuracy significantly. The presenter explains the workings of this method, its advantages over traditional Retrieval Augmented Generation (RAG) systems, and how to implement it effectively. The video also highlights benchmark results demonstrating the improved performance of contextual retrieval, making it a valuable resource for developers interested in optimizing their RAG systems.