Czech-based startup, and an IBM Business Partner, established in 2019 with a vision to help companies improve their customer experience and efficiency by implementing AI assistants that are available 24×7 to answer a wide range of questions promptly and accurately. In collaboration with the IBM Client Engineering and Technical Sales teams from the Czech Republic, AddAI built an AI assistant for a customer in the banking sector that they then piloted. The assistant utilized the retrieval-augmented generation (RAG) methodology, coupled with watsonx.ai, to deliver relevant and precise responses in the Czech language for frequently asked questions (FAQs) on topics ranging from account access to payments, pricing and account services. Through intensive optimization efforts, the implementation team ensured that the answers generated by large language models (LLMs) met a high standard of accuracy and language fluency. To optimize end-user experience, the team integrated watsonx.ai with watsonx Assistant, and was able to deliver instant replies on a user-friendly front end.