Authority on AI and plagiarism
Our plagiarism and AI detection tools and helpful content are used by millions of users every month.
Citing
Identify AI-generated content, including ChatGPT and Copilot, with Scribbr's free AI detector
Our plagiarism and AI detection tools and helpful content are used by millions of users every month.
Perform an unlimited number of AI content checks for free, ensuring all of your work is authentic.
Start detecting AI-generated content instantly, without having to create an account.
Rest easy knowing your submissions remain private; we do not store or share your data.
Scribbr’s AI Detector confidently detects texts generated by the most popular tools, like ChatGPT, Gemini, and Copilot.
Our advanced AI checker tool can detect the latest models, like GPT4 with high accuracy.
Note that no AI Detector can provide complete accuracy (see our research). As language models continue to develop, detection tools will always have to race to keep up with them.
Confidently submit your papers
Scribbr’s AI Detector helps ensure that your essays and papers adhere to your university guidelines.
Check the authenticity of your students’ work
More and more students are using AI tools, like ChatGPT in their writing process.
Prevent search algorithm penalties
Ensure that your content is indexed by publishing high-quality and original content.
AI detectors and plagiarism checkers are both used to verify the originality and authenticity of a text, but they differ in terms of how they work and what they’re looking for.
AI detectors try to find text that looks like it was generated by an AI writing tool, like ChatGPT. They do this by measuring specific characteristics of the text like sentence structure and length, word choice, and predictability — not by comparing it to a database of content.
Plagiarism checkers try to find text that is copied from a different source. They do this by comparing the text to a large database of web pages, news articles, journals, and so on, and detecting similarities — not by measuring specific characteristics of the text.
Scribbr is committed to protecting academic integrity. Our tools, like the AI Detector, Plagiarism Checker, and Citation Generator are designed to help students produce quality academic papers and prevent academic misconduct.
We make every effort to prevent our software from being used for fraudulent or manipulative purposes.
Scribbr’s AI Detectors can confidently detect most English texts generated by popular tools like ChatGPT, Gemini, and Copilot.
Our free AI detector can detect GPT2, GPT3, and GPT3.5 with average accuracy, while the Premium AI Detector has high accuracy and the ability to detect GPT4.
Our AI Detector can detect most texts generated by popular tools like ChatGPT and Bard. Unfortunately, we can’t guarantee 100% accuracy. The software works especially well with longer texts but can make mistakes if the AI output was prompted to be less predictable or was edited or paraphrased after being generated.
Our research into the best AI detectors indicates that no tool can provide complete accuracy; the highest accuracy we found was 84% in a premium tool or 68% in the best free tool.
The AI score is a percentage between 0% and 100%, indicating the likelihood that a text has been generated by AI.
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