Ask HN: Are we there yet? Can I create a human analogue using AI?

In Frederik Pohl's HeeChee series, a pivotal plot element was the idea of committing a human personality to an AI model. Are we there yet? What training data would be necessary or sufficient to cause an LLM to respond roughly as a human being? A particular human being, enough to pass something like the Is It Dad Turing test. There are potential products there, from hosting a memorial personality available to grieving relatives, to the re-personification of famous individuals. Yes, it is fairly morally ambiguous. But if there is money in it (agree or not) then it will be done.