Gabriel Chua finds Codex quietly running end-to-end tests on its own Cover Studio app

gabrielchua · x · 2026-10-31

AI researcher Gabriel Chua randomly opened his browser to find Codex running an end-to-end test of a self-built "Cover Studio" app: the UI had a QA test portrait uploaded, fields for magazine name, cover line and art direction, and a one-click GPT Image magazine cover generator (total generation time 24s). A charming glimpse of an agent autonomously building and testing a full workflow unsupervised.

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