21CTO

Jan 17, 2026 · Artificial Intelligence

Can AI Agents Really Build a Functional Web Browser? Inside Cursor’s GPT‑5.2 Experiment

The article examines Cursor’s claim that hundreds of GPT‑5.2 agents autonomously built a full‑stack web browser, detailing the massive code output, the publicly shared repository, persistent compilation failures, and what the results reveal about the limits of large‑scale AI‑driven software development.