Co-founder of Pangram here. Our false positive rate is typically around 1 in 10,000. https://www.pangram.com/blog/all-about-false-positives-in-ai....

We also wanted to quantify our EditLens model's FPR on the same domain, so we ran all of ICLR's 2022 reviews. Of 10,202 reviews, Pangram marked 10,190 as fully human, 10 as lightly AI-edited, 1 as moderately AI-edited, 1 as heavily AI-edited, and none as fully AI-generated.

That's ~1 in 1k FPR for light AI edits, 1 in 10k FPR for heavy AI edits.