We are delighted to announce that Amazon Lex now supports Japanese. Amazon Lex is a service for building conversational interfaces into any application using voice and text. Amazon Lex provides deep learning powered automatic speech recognition (ASR) for converting speech to text and natural language understanding (NLU) capabilities to recognize the intent of the text, enabling you to build applications with lifelike conversational interactions. Now you can deliver a robust and localized conversational experience that understands Japanese. You can also respond to users with natural sounding Amazon Polly Japanese voices and provide a fully localized, voice experience.
Source:: Amazon AWS