CodeSpeak is a new LLM-powered programming language that lets engineers write high-level specs instead of code, claiming a 5-10x reduction in codebase size. It targets production-grade systems and engineering teams rather than solo prototypers. Real-world case studies on open-source Python projects (yt-dlp, Faker, BeautifulSoup4, MarkItDown) show spec-to-code shrink factors ranging from 5.9x to 9.9x while maintaining or improving test pass rates. The tool supports mixed projects where some code is written manually and some is generated from specs, with a feature to convert existing code into specs coming soon.
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