The word AI has always meant "the intelligent system that we would like to build". Historically, as soon as the system actually works for some task, it gets a

The word AI has always meant "the intelligent system that we would like to build". Historically, as soon as the system actually works for some task, it gets a new name. Thus expert systems, neural networks, logistic regression were all supposedly AI at one time and now are distinct. Already, we see a bit of a divergence in nomenclature where people distinguish large language models from other classes of techniques. Of course, up to now, it has mostly been techies who have used, abused and redefined the term. More recently, marketing types have adopted the work AI so it may lose all meaning soon.