Where does the LLM go in the Testing Pyramid?

Automated excerpt

Test 1 is a regular old E2E UI test against a webapp and belongs squarely at the top of the pyramid. Sounds like we need a way to mock the LLM! Using an LLM to test your LLM allows you to write test cases like this: you want to order a pepperoni pizza.

Selected automatically from source text; not independently written or fact-checked. Read the original for full context.