LLMs Tackle Legacy Formats: RAR Compressor Built in Rust in Five Weeks

This project demonstrates the practical power of modern LLMs in tackling highly complex engineering challenges that would typically require years of specialized expertise. By leveraging Claude Opus and OpenAI Codex, the developer dramatically reduced what would be a multi-year reverse-engineering effort into weeks of evening work, highlighting both the productivity gains and cost-effectiveness of AI-assisted development. The success suggests LLMs are now capable of handling nuanced technical tasks like reverse engineering and specification analysis at scale.