Hey there, I know this might be a silly question, but in my programming class, our lab assistants have threatened not to give us any scores if we use AI. They claim to have found a program that can estimate AI usage as a percentage, and if it's above 50%, we're cooked.

If something like that exists, could you share it? Also, how reliable is it, and what can I do to make sure my code doesn't look AI-generated? I'm worried because even though I write my own code, they might think otherwise ( I just use ChatGPT-4o occasionally to help fix my mistakes )

the idea of a professor running every students's repositories through an ai and plagiarism program makes me nervous, mostly because I've been flagged on similar tools with false positives before.

the prof claims he has a tool that's nearly 99% accurate in detecting AI use and will take into account false positives as well, but the tool is mostly reliable.

is that even possible? how accurate are these tools now?

these are some of the free ai-detector tools I tried to use to try to do my own investigation but they all give varying results.

Codespy - 2% AI; mostly human

Span's AI Detector -> I don't remember the percentage but it said "mostly human" with high confidence

CopyLeaks -> 0% AI

ZeroGPT -> 43% AI, but flagged a lot of my code with comments beside them or lines dealing with arrays

i also know of Moss, but it focuses more on plagiarism and doesn't take into account why code might look similar to something it has seen before.