Even basic conversational AIs like GPT are very far from being ubiquitous and neither will they be anytime soon. These are toys, stepping stones to broader implementations and initself is 20 years away from being able to even tutore primary school students in science, let alone be a scientist. Even using a GAN for reinforced learning (which is by no means effective) it would take years of processing for a marginal capability in doing math or science. These toys haven't been developed for precise output opperations.

In the specific case of GPT, it's just a semantic interpretation layer, an interface for a different AI who's role is to derive intended meaning out of a statement. The back and forth it does with people is just treating humans as an adversarial network. GPT will be the friendly face for the AI that will fire people for having predicted sub-optimal outputs in the next quarter.

Giving free reign to do result check online is what made the first generation of racist conversational bots. The internet isn't a fact book either and given how model scoring happens in a cnn, any AI would only validate with agreeable sources for the sake of fast evolutionary integrations.

AI assistants are already a thing. And i don't mean amazon or apple whose feature sets aren't spectacular. I mean the virtual assistants that are already available for office workers in certain sectors that can fix my PC, remind me to do things and reschedule meetings (according to it's own method of determining priority) on it's own to ensure i have enough time to do it given previous experience.