Developed by Microsoft Research, VASA-1 is a model focused on generating realistic facial animations synchronized with audio in real time. Utilizing deep learning algorithms, it can automatically generate corresponding mouth movements and facial expressions based on input speech, providing users with a novel interactive experience. VASA-1's key strengths lie in its highly realistic rendering effects and real-time responsiveness, enabling virtual characters to interact with users more naturally. Currently, VASA-1 is primarily applied in virtual assistants, online education, and entertainment domains. While its pricing strategy has not yet been announced, a free trial version is expected to be offered for user experience.