How About a Metric?
The Kardashev Scale is a popular metric for technological advancement of civilizations. The scale is based on energy use and has three levels:
Civilization can (and does) harness:
- the total energy available on its planet
- the total energy available from its star
- the total energy available from its galaxy
There are plenty of issues one can take with this metric. Probably the most apparent is that we have no idea what technological advancement looks like beyond our current state and thus energy usage may be a poor indicator.
If you put humans on the Kardashev scale they fall around a 0.7. Note that this doesn't mean we harness 70% of the available energy on Earth, since the scale is logarithmic (we use around 0.001% of the available energy).
So What is Advanced?
Even the Kardashev scale doesn't really answer your question though. To us, a type I civilization would seem very advanced. To a type 0.1 civilization (proto-humans), we would seem very advanced. Since type III is the highest measure, do we consider that "advanced?" Some people propose even higher types (harnessing the power of an entire universe) so were these civilizations to exist type III would seem paltry in comparison.
I got on a roll here because I like the subject, but your question doesn't have an answer because you are asking for a metric to define something that is inherently relative. In fact, now I'm not sure I should have answered at all.