Nitpick:

> Or 2019 for ChatGPT 2

That wasn't ChatGPT, that was GPT-2. It wasn't even designed for "chat" and was purely text completion. If you tried to ask it a question, it was a toss-up over whether you'd get an answer or just a bunch of related questions and statements, as if it was part of what a single speaker was saying.

Like, you could prompt it with "I'm here to talk about" and it would complete it with some random subject.

I don't even know if any of the well-known LLMs (Mistral, Llama, what else?)can even operate in this mode now. Seems they're all being designed for being an assistant.