Pipa Coding

Pipa Coding (formerly Walnut Coding/ , operated by Beijing Smart Walnut Education Technology Co., Ltd.) sells online programming courses to children aged 4–12 and their parents. It uses an "AI dual-teacher" model that combines recorded or AI-driven lessons with live tutors. It also has a self-developed graphical creation tool called NUTS. It was founded in 2017 and raised a $200M Series C in March 2021, led by KKR, Vision+ Capital and GL Ventures. Total funding is about $268M (Crunchbase/CB Insights) and its last round was in 2021. It was named a Beijing unicorn enterprise in 2024.