They are prohibitively expensive to train from scratch but one does not need to train them from scratch any more as long as there is a base training (these are available). With improvements like LoRA, it's possible to do fine-tuning and even stack these
Somewhere I read a short scifi story about a scientist that digitized his mind as part of his research. The copy was so stable it ended up pirated and used as assistant for millions of people. Each instance believes it's the original research copy, and the users must not let it know the truth, otherwise it becomes unhelpful.
I asked Bard for help, and it allucinated the fictional "The Last Human" by Isaac Asimov, and even described the plot when asked.
ChatGPT allucinated that Ken Liu's story called "The Perfect Match" was about personal assistants named "Jorges", after Dr. Jorge Luis Borges, who volunteered for the mind-uploading experiment.
Crowdsourcing to the right subreddit would likely bring the correct answer, so at least we know it doesn't help if AIs think faster than humans, if they don't learn to think as different personas.
I just wanted to quote the story, but this got me sidetracked.
