The gamers have done it again, this time building a functional ChatGPT in Minecraft—but before you get too excited, it takes literally hours to provide a response

As for the actual LLM part of this project, sammyuri trained their CraftGPT in Python with the TinyChat dataset available via HuggingFace. As this comprises fairly basic English-language conversations ...
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A working ChatGPT chatbot has been built inside Minecraft

A Minecraft player has successfully created a functioning language model within the game, complete with the ability to engage in basic conversations.