Questions
Short answers to the things people ask most.
What is GPT Nada?
A private writing checker. It marks which sentences read like a person and which read like a machine, gives feedback and fixes like a teacher would, checks that your sources exist, and looks for passages already published online.
How does it work, and where does my text go?
Mostly on small AI models that run on GPT Nada's own computer, not in the cloud and not on a big company's servers. The quick check runs inside your browser and sends nothing. Two things do use outside services, and only for a little: Sources sends short phrases (about nine words each) to Brave Search, and Citations looks up the titles of your references in free scholarly databases.
Do you store my writing?
No. Your text waits only while its check is queued or running, and is wiped the moment the result is ready. We keep counts, such as when a check happened and which tool was used, with a random code that holds no name, email or text. Nothing you write is used to train anything.
Why is there no link to share my results, only a report?
A share link means keeping your text and results on a server so that someone can open them later. We don't keep them. The report is built in your own browser from what is on your screen, and you save it as a PDF. The only copy is yours, and you choose who gets it.
Is it accurate?
It is a strong hint, never proof. Two different detectors look at the writing. We say very likely machine-written only when both agree strongly, and probably machine-written when one is certain and the other leans the same way, which is typical of machine writing a person has edited. Otherwise we side with the writer. Careful, formal writing by a person can still score high, and lightly edited machine text can pass, so never use one score to accuse someone. See our own test results.
Why does it run so many checks after I press the button?
The tab you press the button on is done first. Everything else that costs us nothing then runs behind it, so the other tabs are ready when you click them. Sources only runs when you press the button on its own tab, because every web search has a small cost.
Why does Sources sometimes say it is resting?
Web searching has a monthly allowance. When it is used up, Sources rests until next month. Everything else keeps working.
Is there a limit on how much I can check?
Yes, so that everyone gets a turn. Each browser can run about ten full checks a day, and ten web searches. It resets the next day. The site may also ask your browser to prove it is not a robot; most people never see this.
It got something wrong. What do I do?
Press Report a problem at the bottom of any page. Sending your text and results is optional. If you do, we keep them only until the problem is sorted, then delete them.
Who is behind it?
It is a small private tool, not a company product. It is not connected to GPTZero or OpenAI. It was designed by Warren. See the privacy page for the full details.