We had 3 interns this past summer - with AI I would say they were VERY capable of generating results quickly. Some of the code and assumptions were not great, but it did help us push out some releases quickly to alleviate customer issues. So there is a tradeoff with juniors. May help quickly get features out, may also need some refactoring later.

Interesting how similar this is to the tradeoff of using AI coding agents

What makes them more capable than a senior engineer with three LLM agents?