LemonSlice is a frontier AI research and product lab that builds foundational video generation models and developer tools. They offer an API and an embeddable widget that transform single images into live, conversational video experiences. Their technology, Lemon Slice-2, is a 20-billion-parameter video diffusion transformer optimized for real-time performance, enabling full-emotion facial animation, hand gestures, and expressive body movements for applications in education, e-commerce, healthcare, and customer support.