This image shows CraftGPT, a 5-million parameter language model built entirely within Minecraft using redstone circuits! Created by sammyuri, the structure spans 439 million blocks and takes two hours to generate a single response. The construction is so large that the Distant Horizons mod was necessary to capture footage showing the entire structure, as standard Minecraft render distances cannot display it all at once. The model can engage in basic conversations and demonstrates awareness that it’s an AI, can provide suggestions, and varies responses based on its seed value. LLMs are fundamentally mechanical systems, matrix multiplications, tokenisers, attention mechanisms, all reducible to ones and zeros. Whilst we debate whether AI “thinks” or “understands”, sammyuri has constructed the answer in blocks.