Can you help me understand your line of thought better?

In 4.1 The Metacircular Evaluator, they point out that it is an implementation of the environment model of evaluation from 3.2. Note that model has two components: eval and apply. Eval gets used much more often than apply, so it doesn’t make sense to make eval a component of apply. Apply, on the other hand, works on already evaluated components.

How do I get access to the new GPT?

Yes, that will likely be sufficient. Note: it may need to install additional dependencies…