Education technology has come a long way in the past 5 years, blending innovation with accessibility. The adoption of virtual classrooms, online courses, and digital tools has significantly expanded educational opportunities, but it has also exposed several gaps in the online learning experience, including low student engagement and course completion rates, limited personalization, and practical constraints that prevent instructors from effectively addressing individual student needs. Conversational AI is poised to address these challenges by leveraging advanced large language models, enabling realistic, interactive learning experiences through virtual teaching assistants. These AI-powered TAs can provide intelligent, personalized interactions, facilitating efficient, one-on-one instruction and adapting to student needs in real-time. Several EdTech companies are already using conversational AI to improve learning outcomes, with platforms like Duolingo and Praktika.ai effectively using conversational AI to revolutionize language learning and adaptive practice with an AI avatar. Agora's Conversational AI Engine makes it possible for educational institutions to offer personalized, on-demand instruction, significantly enhancing the quality, accessibility, and effectiveness of education.