I recently tried Pangram, created an account, wrote a few lines about how my day went, and it was flagged as likely AI-assisted. It clearly doesn't work.
It's especially bad that they keep insisting that it works very well, because thousands of people will probably end up falsely accused of AI usage as a result.
The problem is likely that you only wrote a few sentences. Pangram clearly needs more text than that to work, which makes sense.
Pangram should refuse to work with small amounts of text. (Well, I know it already does, but the threshold should clearly be significantly higher.)
This issue is, like, exactly what the response from Pangram is talking about.
Can you share your experiment, so that we can draw our own conclusions? I've been paying for Pangram for a long time and have not seen it misbehave even once. I've seen many people attack it, but when I looked more closely, their claims often evidently boiled down to "I want plausible deniability for my own use of LLMs" - i.e., they were clearly posting AI-generated content on social media and just didn't like the possibility of being called out.
I'm not saying that's you, but since a proof is easy to produce, it would be nice if you could share.