An AI experiment used GPT-5.2 to build a 3M-line web browser in a week, revealing how far AI coding has come and sparking debate on code quality.

The unusual experiment, which was shared by Truell on X (formerly Twitter), involved the AI agents running uninterrupted for a week to create a browser from the ground up.

I nuked Explorer and gained speed, silence, and a few new problems.

Professionals worldwide gain standardized recognition for web development skills through assessment-based certification ...