Comment by ChadNauseam
6 months ago
Hidden layer is a term of art in machine learning / neural network research. See https://en.wikipedia.org/wiki/Hidden_layer . Somehow this term mutated into "hidden state", which in informal contexts does seem to be used quite often the way the grandparent comment used it.
It makes sense in LLM context because the processing of these is time-sequential in LLM's internal time.