What's your goal? Is it to avoid hiring someone fake, or to avoid interviewing them at all?

If you are just trying to decrease the number of AI-generated applicants, one tactic I've seen is to ask applicants to complete a short (~30 minutes) evaluation alongside or even before applying. As in, your application won't be considered if this isn't done.

That will weed out 95% of people who are just spitting fake applications at you -- it won't be worth their time. It might dissuade some real applicants, too - just be upfront about why you're doing it, and don't make your overall process onerous.

The remaining folks, the ones who are actually trying to fake it for money, are harder to spot, and you will need more traditional methods.

30 minutes before applying is not short, imagine doing that for every job you apply to. it's insulting.

What? It's much less effort to perform 'an evaluation' with an llm than actually do it. You are actually just weeding out 95% of real applicants.