Mentat is an open-source programming assistant that utilizes GPT-4 technology to write code for you. By telling Mentat what you need through the command line, it will directly create code in existing or newly created source files. Mentat can automatically understand the context of existing code and perform coordinated editing across multiple locations and files. Unlike Copilot, Mentat actually writes the code for you, rather than just providing inline suggestions as you type. Mentat can be used for both existing code and the writing of new code and scripts. Come and give it a try!