Mizuho Bank to Launch 'Aomaru Bank,' an Interactive AI Assistant, in September 2026

Mizuho Financial Group and Mizuho Bank have announced the development of 'Aomaru Bank,' an interactive AI assistant powered by OpenAI technology, scheduled for launch in September 2026. This new service will feature the bank's official mascot, 'Aomaru,' acting as an AI agent to solve various financial concerns through natural conversation.

Key features and stages of development: - Initial Launch (Sept 2026): The service will first provide automated inquiry responses within the Mizuho Direct app. - Personalized Interaction: The AI agent proactively identifies customer needs and provides tailored guidance, reducing the burden of searching for answers. - Multi-modal Support: Users can interact via both text and voice, making it accessible for those who prefer verbal communication over typing. - Accuracy and Safety: Built on Mizuho’s extensive FAQ data, the system uses RAG (Retrieval-Augmented Generation) to ensure fact-based answers while implementing multi-layered safety filters. - Future Expansion: Plans include handling administrative procedures and providing asset formation and management advisory services.

This initiative is part of Mizuho's broader strategy to accelerate the social implementation of generative AI. By combining OpenAI's advanced LLM and voice technology with Mizuho's deep financial expertise, the bank aims to revolutionize digital customer engagement.