Does Scribbr AI Checker Detect AI?

Pradip Maheshwari
Does Scribbr AI Checker Detect AI


Nowadays, language models like ChatGPT have gained significant attention for their ability to generate human-like text. While these AI models offer numerous benefits, they also raise concerns about potential misuse, such as generating academic essays, news articles, or other content without proper attribution. To combat this issue, various tools have emerged to detect AI-generated content, and one such tool is the Scribbr AI Checker.

This article explores the capabilities of the Scribbr AI Checker, its accuracy in detecting AI-written text, and the broader implications of AI detection tools in the era of advanced language models.

What Is Scribbr AI Checker?

Scribbr initially started as a plagiarism checker, but recognizing the growing concerns around AI-generated content, they expanded their offerings to include an AI detection tool. The Scribbr AI Checker is designed to analyze a given text and determine the likelihood of it being written by a human or generated by an AI language model like ChatGPT.

How Does the AI Checker Work?

The Scribbr AI Checker utilizes proprietary software and algorithms trained on a vast corpus of human-written and AI-generated texts. By analyzing various linguistic patterns, sentence structures, word choices, and other writing characteristics, the tool aims to identify the subtle differences between human and AI writing styles.

When you submit a text to the AI Checker, it processes the content and provides a percentage score ranging from 0% to 100%, indicating the probability of the text being AI-written. A higher score suggests a higher likelihood of the text being generated by an AI model, while a lower score implies a higher probability of human authorship.

Accuracy of the AI Checker

One of the primary concerns regarding AI detection tools is their accuracy in distinguishing between human and AI-generated content. Scribbr has conducted extensive testing to evaluate the performance of their AI Checker, and the results are promising.

Free AI Detector

Scribbr’s free AI Detector, which is available to all users, demonstrated an accuracy of 78% in their internal testing. Notably, it detected 100% of texts generated by GPT-3.5 and GPT-4 correctly, with no false positives on human-written texts.

Premium AI Detector

For users requiring even higher accuracy, Scribbr offers a premium AI Detector. In their testing, this premium tool achieved an impressive accuracy of 84%, the highest among the tools evaluated by Scribbr. It caught 100% of GPT-4 generated texts and 60% of edited or paraphrased AI texts, which are typically more challenging to detect.

Does Scribbr AI Checker Detect AI?

The answer is yes – the Scribbr AI Checker can effectively detect AI-generated content from popular language models like GPT-2, GPT-3, GPT-3.5, and GPT-4.

Detection Capability

The free AI Detector from Scribbr can detect texts generated by widely used AI models such as GPT-2, GPT-3, and GPT-3.5 with high accuracy. The premium AI Detector takes it a step further and can even detect GPT-4 generated texts, though this capability is currently in an experimental phase.

Accuracy Insights

Scribbr’s testing results demonstrate the impressive accuracy of their AI Checker, particularly the premium version. The free AI Detector achieved an accuracy of 78%, detecting 100% of GPT-3.5 and GPT-4 texts correctly, with no false positives on human-written texts.

The premium AI Detector outperformed other tools tested by Scribbr, boasting an accuracy of 84%. It caught 100% of GPT-4 texts and 60% of edited or paraphrased AI texts, which are typically more challenging to detect due to the added human intervention.

Limitations and Considerations

While the Scribbr AI Checker demonstrates promising results, it’s important to acknowledge that no AI detection tool is 100% accurate. The tool’s performance may vary depending on factors such as the length of the text, the specific AI model used for generation, and the degree of human editing or paraphrasing applied to the AI output.

Scribbr acknowledges these limitations and advises users to interpret the AI score as an indication rather than definitive proof. The tool may make mistakes, especially on shorter texts or if the AI output was prompted to be less predictable or edited extensively after generation.


The emergence of advanced language models like ChatGPT has ushered in a new era of AI-generated content, bringing both opportunities and challenges. While these models offer powerful capabilities for content creation, they also raise concerns about potential misuse and the need for proper attribution.

The Scribbr AI Checker stands out as a valuable tool in this landscape, offering a reliable way to detect AI-generated content from popular language models. With its impressive accuracy, particularly in the premium version, the tool can aid educational institutions, publishers, and organizations in identifying and mitigating the risks associated with AI-generated content.

However, it’s crucial to recognize that AI detection tools, including the Scribbr AI Checker, have limitations and should not be treated as infallible. As AI technology continues to advance, the need for ethical guidelines, transparency, and responsible use of these tools becomes increasingly important.

The ability to detect AI-generated content is a step towards fostering trust and accountability in the digital age, but it must be accompanied by ongoing research, dialogue, and a commitment to upholding the highest standards of academic integrity and ethical content creation.

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