Abstract：Making and Using AI in the LibraryCreating a BERT Model at the National Library of Sweden How can novel AI techniques be made and put to use in the libraryCombining methods from data and library sciencethis article focuses on Natural Language Processing technologiesespecially in national librariesIt explains how the National Library of Collection ClassificationUsing BERT models for automated classificationRetrieval and IndexingEnhancing search capabilities through BERT modelsLibrary AutomationImproving OCR coherence using NLP technologyThis article focuses on how to use natural language processingNLPtechnology in librariesparticularly in national librariesIt describes how the literature data from the National Library of Sweden prompted the development of the BERT language model for SwedishThe specific uses of this model in academic libraries cover strategies for making digital collections available for new types of researchfrom automatic classification to enhanced search capabilities and improved OCR coherenceNLP technology can parse and understand human languageenabling computers to better interact with humansunderstand documentsand provide relevant information