Someone Built A Working ChatGPT in Minecraft Using 439 Million Blocks - and My Jaw Is Still Somewhere in the Nether

I started playing Minecraft back in its alpha days. You know, when it was just a charming little survival/creative sandbox with blocky cows, a single biome, and that one water physics bug that could end your whole day. It was simple, weirdly relaxing, and endlessly creative. I dug some holes, built a few shoddy castles, and thought, "Yeah, this is fun."

Cut to 2025 - Minecraft is the most popular game of all time, played by literal generations. I've watched it grow from an indie curiosity into a global phenomenon with mods, merch, museums, and now… Minecraft-based AI supercomputing.

Because now, YouTuber sammyuri has gone and built ChatGPT inside Minecraft. Not a joke. A real, functional chatbot - dubbed CraftGPT - made with 439 million Redstone-powered blocks. That's not just dedication. That's an act of digital wizardry that makes my early pixel houses look like stick drawings in crayon.

CraftGPT runs on a 5-million-parameter language model (because that's all his "poor old laptop" could handle - same, honestly), trained on basic English convos. It has a tiny 64-token context window and frequently outputs nonsense. It's also painfully slow - we're talking "hours to generate a sentence" slow - but it works. In vanilla Minecraft. Using only Redstone.

I never would've guessed that the same game where I once got jump-scared by a creeper could, one day, be used to build a functioning AI. But here we are - a world where Minecraft is now an actual programming language with pigs.

So yeah. While I waste time organizing chests and avoiding Endermen, someone out there is building Skynet one piston at a time. I love this game.

Watch the video below: