Sensei is a platform that enables users to create AI replicas of themselves, which can remember personal stories, share knowledge, and provide advice. These digital clones can be used for various purposes, such as helping people with dementia by offering familiar conversations, acting as personalized tutors, or monetizing expertise by providing on-demand advice. Users can train their replicas by uploading personal stories, connecting to websites, or adding YouTube videos. The platform also allows for the creation of character replicas, which can be customized with unique personalities and trained with specific information. Additionally, users can add their voice and create video avatars to enhance the realism of their digital replicas. The platform offers both free and professional accounts, with the latter providing more features and capabilities.