What is GPTZero?
GPTZero is a leading AI detector designed to check whether a document has been written by large language models such as ChatGPT. GPTZero performs AI detection at the sentence, paragraph, and document levels. Our model is trained on a large and diverse corpus of human-written and AI-generated text, with a particular focus on English prose. To date, GPTZero has served over 2.5 million users worldwide and partnered with over 100 institutions across education, recruitment, publishing, legal, and more.
How to Use GPTZero?
Simply paste the text you want to check or upload a file, and we’ll return an overall detection result for the document, along with sentence-by-sentence highlights of detected AI-generated content. Unlike other detectors, we help interpret results through descriptive insights, not just a single number.
To unlock powerful detection for larger texts or batches of files, sign up for a free account on our dashboard.
If you want to run AI detection while browsing, you can download our Chrome extension, Origin, which allows you to scan entire pages with a single click.
When Should I Use GPTZero?
Our users have witnessed the rapid growth of AI-generated text in education, certification, recruitment, social writing platforms, misinformation, and more. We created GPTZero to highlight the potential applications of AI in writing. We especially focus on classifying AI use in prose.
Overall, our classifier is designed to flag content that can start conversations (e.g., between educators and students), encouraging further inquiry and raising awareness about the risks of using AI in written work.
Does GPTZero Only Detect ChatGPT Output?
No. GPTZero works robustly across a range of AI language models, including but not limited to ChatGPT, GPT-4, GPT-3, GPT-2, LLaMA, and AI services based on these models.
Why is GPTZero Better than Other Detection Models?
GPTZero is the most accurate AI detector across use cases, validated by several independent sources. For example, TechCrunch tested seven other detectors and named us the best and most reliable AI detector.
GPTZero continues to build and refine our own technology. In competitive analysis, we found GPTZero performs better than others — and that some competitors simply relay output from free open-source models without further training.
Unlike many other models, GPTZero is fine-tuned specifically for student writing and academic texts, which significantly improves accuracy in these scenarios.
Lastly, many users — especially educators — have told us they trust GPTZero because we have one mission: to provide tools for detecting and safely applying AI technology. Unlike many vendors who added detection as an afterthought, this mission has always been our top priority.
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