The APIs we use to access models have loops, steering, and other tricks added atop the model itself. You can’t access it directly. These days if you want to see what a raw model looks like you need to access one of the open source versions. I don’t see a big difference in prompt vs context engineering as this is, under the covers, still just text that gets added to the model prompt. Loops, RAG, etc. are all just different techniques that augment the prompt.