Alexandr Wang, a 25-year-old American, is the head of Scale AI, a company that specialized in artificial intelligence in artificial intelligence and is valued at seven billion dollars.  Alexandr Wang, gifted with a special interest in mathematics applied to computer science participated in mathematics and coding competitions from a young age and at 17 years old, he works full time on the coding of the question and answers site Quora. It is through, Quora that he met Lucy Guo, co-founder of Scale, with whom Alexandr Wang started the startup in 2016. He studied for one year at MIT, then informed his parents that he would stop only during the summer but actually decided to stop his studies completely to fully devote himself to Scale. Alexandr Wang owns 15% of Scale, which represents about a billion dollars for a valuation estimated at  7.3 billion dollars, making the billion dollars, making him the youngest self-made billionaire in the world according to Forbes magazine. The start-up has developed within the incubator Y Combinator incubator has managed to grow from 3 to 600 employees and to total one hundred million dollars in revenue by 2021. Scale's characteristic is to create an artificial intelligence infrastructure from which developers can build machine learning programs to analyze their data.  Scale's customers range from Silicon Valley companies to large industrial groups such as General Motors, OpenIA, Airbnb, Samsung and Pinterest, which have that have an astronomical amount of data that they are not able to use internally. Alexandr Wang explains that Scale's goal is to help companies unlock the potential of the data they have and their business with artificial intelligence.