Can you detect AI-generated code?

Yes. Proofline measures whether source code is AI-generated and returns a signed, reproducible result. On the RAID code benchmark, in Document Review mode, it reaches ROC-AUC of about 0.88 — and you can recompute that figure yourself in your browser.

Can Proofline detect code from tools like Copilot or ChatGPT?

Proofline measures the finished code you submit rather than any single tool's fingerprint, so it is not tied to one generator. Every result is signed and recomputable, so you check the result rather than trust it.

Why is AI code detection so hard?

Source code is highly structured, so human-written and AI-written code often look alike, leaving little signal. Independent research also finds detectors generalize poorly on code across unseen models, languages, and edits.

How do you verify a code result yourself?

Every result is signed and tied to published data. On the proof page you can recompute the figure and re-check the signature in your own browser, or hand your own agent a prompt that fetches the signed data and confirms each step.

Home › Learn › AI code detection

AI is writing more of your code every day. Now you can track where it is.

It ships in pull requests every day, and it never signs its work. Proofline finds it and signs every result — so you check the call, not trust it.

Why it's hard

Code is the hardest case in detection. It’s so structured that human and AI code look alike. Most tools miss too much, so they skip it. We don’t.

What we measure

On the RAID code benchmark, Proofline reaches:

ROC-AUC ≈0.88 · RAID code · Document Review mode

Signed and repeatable — the same code gives the same result. Recompute it yourself; don’t take the number on trust.

Don’t take the number. Watch a real RAID code test verify itself, right here in your browser.

Now run it on your code

Start free and test your own code against the same signed engine.

Start free → See all the proof →

Shipping AI code at scale?

We help teams make their AI-authored code verifiable from the start — so you always know what’s machine-written. Talk to us →

— On why code detection is hard: arXiv:2411.04299.