SimWorld
@simworld_ai
Open-source initiative for open-ended realistic simulation of autonomous agents in physical and social worlds
525 Following 1.1K Followers
Opus 5.5 raises the bar for quality. GPT‑6 Sol lowers the cost of building in 3D. 🏗️👀
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
#UnrealEngine#
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