The Oscars of painting little guys are the Golden Demon awards, handed out by Games Workshop at official miniature painting competitions. The entry guidelines for the 2024 Golden Demon awards contain a note in the FAQ section that wasn't present in the previous year's guidelines. In answer to the question, "Am I allowed to use Artificial Intelligence to generate any part of my entry?" it simply replies, "No."
This is presumably in response to controversy over the winning entry in the Single Miniature...