Accuracy
Test reviews the teacher never labelled for training, and 580 variants of them with typos, dialect and swapped names.
Learning curve
The embedding student trained on fewer of the teacher's labels. Each review brings its variants.
When does owning the student pay?
The teacher costs the same for every request. The student costs a machine a month, as many as the peak load needs, plus labelling its training set once, spread over a year. Defaults are the bench's: list prices when HELM ran GPT-3.5 Turbo and an AWS c7i.large on demand.