With the rapid development of Artificial Intelligence (AI) technology, blended learning shows great potential in global education. Focusing on New Zealand, Malaysia, Saudi Arabia, and India, this study analyzes the impact of technological infrastructure, teacher digital literacy, student support, and socio-cultural factors on the effectiveness of blended learning. Educational policies and practices in the four countries are compared through case studies. The findings show that while some progress has been made in blended learning in urban areas, the technological divide remains significant in rural areas, especially in India and Saudi Arabia. In addition, insufficient teacher technological literacy and cultural resistance have affected the spread of the model. To this end, it is recommended to strengthen technological infrastructure, upgrade teacher skills, and promote sociocultural acceptance of blended learning for more equitable educational development.