A new programming language is created every fortnight. Usually, the designers start by creating a syntax tree interpreter, and then the language is shown to potential users. Users find the language great, but just a little too slow. So the creators design a byte code and the program is translated into the byte code before it is run. That certainly helps, but the language is still rather crawling… GraalVM wants to change this state of affairs. You can write your syntax tree interpreter using our API and we will make everything fast! To convince you that this is for real, I will show you that our Ruby implementation is ten times faster than other implementations. Come to see how to create the fastest environment for running your favorite programming language.