That's an irrelevant comparison because cost is always a constraint, so there are not going to be unlimited AI or humans. The question is how to optimally combine them for a given cost.

When Google showed up on the scene I found I no longer needed to memorize basic syntax and other such things. If I couldn't remember on the fly, i'd just do a quick google search and move on. This freed space in my mind to instead focus on bigger & better things.

I use GenAI tools when coding a lot, but I do not vibe code. I go through everything it generated, and we iterate. And yes, it doesn't save me a lot of time. But what it does do is free up mental capacity in a similar manner. But instead of syntax, it's more complicated patterns. Maybe I don't remember how to stitch something together, but i know it can be done. Instead of spending the time to look it up and then code it, I just tell it to do it for me.

Yeah, humans reviewing the AI review can only detect the false positives, where the LLM claims something is non-compliant and flags it for review/correction by a human or another agent. Human review can’t find the false negatives (true deficiencies not flagged) unless you do a full audit yourself to find whatever deficiencies the AI missed.

I feel like you're missing the point that it's more thorough to use both. Speed isn't the only factor that matters.

This is commonly known as "LLM-as-a-judge" and anecdotally multiple people I know who write code using OpenRouter or using multiple models say it's surprisingly effective. It's strange that there don't appear to be any major papers on it since ~early 2025, which at this point is basically ancient history.