International Journal of Scientific Research and Engineering Development

Lip-sync generalization involves AI techniques that match facial lip movements to various audio inputs from different speakers and languages. Live chatbots support real-time conversational interactions. This paper examines how these technologies work together to create immersive AI avatars. It reviews historical developments, important literature with experiments and results, and future implications. The findings show notable improvements in realism and user engagement, especially in healthcare and customer service, though challenges with accuracy and ethics persist. Combining these technologies enhances virtual human-computer interfaces and could lead to wider use in interactive systems.