CodeSpeak is a new programming language designed to make coding more efficient by leveraging large language models (LLMs). It allows programmers to write concise specifications that the system then translates into code. This approach can reduce the size of code significantly, often by a factor of 5 to 10 times. For example, a project that originally required 255 lines of code for WebVTT subtitles support was shrunk to just 38 lines using CodeSpeak. Such drastic reductions simplify maintenance and make it easier for teams to collaborate. The process is straightforward. When a specification changes, CodeSpeak adjusts the corresponding code automatically. This means developers can focus on high-level design rather than getting bogged down in intricate coding details. CodeSpeak is particularly useful in mixed projects, combining both manually written code and automatically generated specs. It can integrate into existing codebases, replacing sections with more compact specifications. A case study demonstrates the effectiveness of CodeSpeak with various open-source projects. The Italian SSN generator, for example, was compressed from 165 lines to 21, achieving a shrink factor of 7.9x. The encoding auto-detection for BeautifulSoup4 saw a reduction from 826 lines to 141, with a 5.9x shrink factor. Each case not only reduced the number of lines but also maintained or improved test coverage, indicating that CodeSpeak can maintain functionality while simplifying codebases.