Replacing my best friends with an LLM trained on 500,000 group chat messages

Izzy Miller trained a large language model – similar to GPT – on the entire history of his friends’ group chats, which had been running for years. He then hosted an interactive version of it for his friends, so they could all chat with the AI versions of themselves. It worked surprisingly well:

“This has genuinely provided more hours of deep enjoyment for me and my friends than I could have imagined. Something about the training process optimized for outrageous behavior, and seeing your conversations from a third-person perspective casts into stark relief how ridiculous and hilarious they can be.”

The post contains lots of technical details, if you have the urge to do something similar yourself.