Dev pushes GPT-6 Astra in Codex to build a full Three.js city with no imported 3D models

OpenAIDevs · x · 2026-11-04

OpenAI's developer account amplified a demo by zavrenn: after Three.js r187 shipped, he iteratively prompted Codex (GPT-6 Astra) to build a miniature city featuring an airfield, airplane, detailed buildings, and improved water — all in Three.js with zero imported 3D models, with more to come.

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