This is not what I "heard" from a much more reliable source than HN: once a missile of "proper tech" is shot at an aircraft, there is no evading it whatever the tech of the aircraft, unless luck modulo altitude. Maybe this is not true anymore, but that would probably be classified information. Classification of a boggey on a radar is usually a matter of seconds, if not less than 1 second, and once the missiles are in flight, it is very probably over for the combat aircraft. And I have not heard of any efficient "stealth" of combat aircraft on the whole range of existing radars, and I would not bet on this.
And it seems there is often more than one missile shot at a combat aircraft.
That would mean, before any combat aircraft can fly, all ground base radars would have to be disabled... and how do you get rid of a dynamic mesh of mobile ground/sea based radars (or in a place you cannot really "reach")?
In the end, the tech of the opponent in a "standard" conflict should be assessed before anything can fly, and get ready for some very bad surprises (high altitude cruise missiles...).
drones with payloads may be able to do "more" for "cheaper" than a cruise missile: I guess a drone is "cheaper" than a combat aircraft but more "expansive" than a cruise missile.
"AI" may find its way in the autonomous guidance systems of a cruise missile, like drones which would only need to receive some sort of high level order to perform some "tasks" and that nearly completely autonomously, but I don't think you can "embed" such "big" AI in a drone though, you would need a near "realtime" link to some AI center, then it would be "space" war, war satellites destruction and jamming.