ChatGPT but instead of learning from the internet and then producing text, learning from the internet + < your additional information > and then producing text.

It's an announcement about the availability of a feature to do that. The article doesn't mention the biggest issue with fine-tuned models though - cost.

Well you are wrong on a couple levels

This is not really meant to teach it new information. It is meant to instruct it how to respond to well defined tasks

And secondly the cost is already clearly explained