People are Building INSANE things using GPT-5.3 codex Channel: RandomAI10K views • 06/02/2026Related VideosGPT-5.3 Codex Is INSANE – Hands-On Testing OpenAI’s BEST Model!GPT-5 Codex: From Beginner to Expert in 17 minutesExample of Creating Agent Skill in VS Code (GPT-5.3 Codex)OpenAI's Insane GPT-5.3 Codex — This AI Codes Itself?!