Douwe Kiela, CEO and cofounder of Contextual AI, joins Ryan and Ben to explore the intricacies of retrieval-augmented generation (RAG). They discuss its origins, the evolution of AI models, the challenges of hallucinations, and the importance of system design. Douwe emphasizes the need for personalization in ranking systems and the role of synthetic data in improving AI models. They also cover the future of RAG, the integration of structured and unstructured data, and the significance of context windows in AI applications.