LLMs Lack Spatial Reasoning: Pretty Castles, Broken Interiors
Angaisb_ · x · 2026-08-10
The author points out that while LLMs can generate visually impressive structures in sandbox games like Minecraft, their lack of spatial reasoning leaves buildings hollow with blocked corridors.
Although benchmarks like VoxelBench show improving visual results, functionality remains poor. The author notes that models like GPT-5.5, GPT-5.6, and Fable 5 all make similar logical errors when building houses, suggesting it's a core capability issue rather than just visual understanding.
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