Pilot
A real test with a baseline, a sample and a decision rule written first.
A demo is a selected case. A pilot is not a trial you poke at. It has four parts, written down before you start: a defined task with your own inputs, a baseline, a sample large enough to show variance (twenty items, not two) and a decision rule.
The rule says what result would make you adopt and what would make you walk away. Writing it afterwards is how a pilot ends up concluding whatever you already wanted. Before paying for a tool, spend thirty minutes building the same thing with a general model and your own examples, and compare on twenty real items.
Find your way around
Learn it in the course, copy it from a playbook, see it work in a case study.