‘Copilot’ is also the name of Microsoft’s AI chatbot, and many readers will understand it from that context. That is, it’s presented as a digital being who is there to help you if you need help. Copilots aren’t routinely needed to fly planes. But the idea is that together a pilot and a copilot perform better than a lone pilot.

"AI" is a noun being used as an adjective to modify "copilot". "AI" works just like any other adjective: "your trusty French copilot" "your trusty well-trained copilot" "your trusty skilled copilot". Does that answer your question?