MongoDB's Pete Johnson on Retrieval for AI Agents

Nathan Labenz spoke with Pete Johnson, Field CTO of AI at MongoDB, on The Cognitive Revolution podcast. The episode traces the shift from lexical to vector and hybrid search, introduces new query stages such as $rankFusion and $rerank, and covers contextualized chunking methods from the Voyage AI acquisition. It also notes the history of database architecture and Labenz's summary that the most advanced AI adopters Pete met this year are not based in the US. The episode is available on the podcast site and YouTube.