Built from scratch by Grok 4.5 + Grok Build in UE5.8: a cyberpunk L-corner street with neon facades, rain, signs, and crowds walking through the scene.
End-to-end, the run took 10.75M tokens, 36.5 minutes, and only ~$12.4 at API pricing.
What impressed me most is not just the final render, but the process: the coding agent built it in many small steps, saved 30+ map checkpoints, verified the scene, and iteratively fixed issues autonomously.
Congrats to the
@SpaceXAI team for building such an impressive coding model and harness. This feels like a real step toward agentic 3D world creation.
@elonmusk @milichab @skcd42 @yunta_tsai
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UnrealEngine#