“Human beings deserve to know the truth.” This is the phrase that opens the GPTZero website, an application created by computer science student, Edward Tian, and which claims to be able to detect whether an article was written by a flesh-and-blood person or generated automatically by ChatGPT. Available free of charge to any user, it has been especially popular with teachers.
Launched on January 2nd, the GPTZero It has a simple aesthetic, just like the one itself. openai chatbot.
Working in a very intuitive way, it only needs the user to paste the text to be investigated in the box that appears on its page. Then, it brings a detailed report of all the points analyzed by the tool, including an average of the “perplexity” of each part of the article.
Finally, by scrolling down and clicking on the result button, the user then has a more “definitive” answer to what he wants to know, discovering whether the text was written by a human or created by the AI model.
What elements does GPTZero evaluate
For those who were curious, the level of “perplexity” evaluated by GPTZero corresponds to nothing more, nothing less than the complexity of writing an article.
This is because, according to Tian, the less the tool becomes familiar with the structure of a writing, the more likely it was developed by a human, since texts written by AI tend to have more recognizable data and a lower level of depth.
In addition, GPTZero also evaluates the so-called “overflow” of the text, a component that puts the uniformity of the exposed sentences in perspective.
In general terms, this means that the tool evaluates the sentences in the article, detecting when they are less constant – that is, when they appear sometimes shorter and sometimes longer, just as a human being would write – or more constant – with sentences of regular sizes, more easily programmable by a machine.
Application was successful among teachers

Although not infallible, the application has been successful, especially among teachers. According to Tian, in an interview with National Public Radioeducators have been looking for it to tell about the positive responses they have achieved when using the tool.
Precisely for this reason, on the GPTZero website, a waiting list was made available for interested professionals in the area, since there is the promise of a personalized solution for those who want to responsibly adopt AI technologies in schools.
In addition, the tool seems to have aroused the curiosity of even the common public, which, since its launch, has generated more than 30,000 accesses to the application, causing project instability.
Despite the help of streamlitthe free platform on which the app was hosted and which offered more resources for the developer to be able to keep GPTZero available, until the time of this report the site still had connection problems.
https://tecnoblog.net/noticias/2023/01/09/ferramenta-promete-dedurar-textos-gerados-com-chatgpt/