Reco.ai used AI to completely rewrite the JSONata data transformation library in a single day, eliminating $500K in annual maintenance costs.

A team rewrote the entire JSONata codebase using AI assistance, completing the project in just one day instead of the expected weeks or months

The rewrite is projected to save $500,000 per year in operational and maintenance expenses

The project demonstrates how AI tools can dramatically accelerate legacy code modernization and refactoring tasks

The article generated significant discussion with 63 comments on Hacker News, indicating strong community interest in AI-assisted software development