Cantian AI is a personalized AI service product that combines traditional Bazi astrology with large language models (LLMs). It builds a personal knowledge base that updates dynamically, generating detailed Bazi astrology reports along with clear trend analyses. The product background highlights the challenges in traditional astrology services, such as the difficulty in finding expert practitioners, lack of in-depth communication, and poor cost-performance ratios. Cantian AI aims to enhance traditional astrology with cutting-edge technology, revitalizing ancient wisdom in the age of intelligence. While the product's pricing is not explicitly stated on the page, a link to get started suggests that there may be paid services available.