Artificial Intelligence

GPTzero vs Turnitin: Is Zero GPT as Accurate as Turnitin?

01/23/2025
by Zoran Trimmel
GPTzero vs Turnitin: Is GPTZero as Accurate as Turnitin?
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Many students, content writers, and even institutions might be struggling to make a choice among a variety of AI content detectors and plagiarism checkers in the market. Knowing this challenge, our article today will focus on the battle between the top two in the field: GPTzero vs Turnitin.

So, which one is better? Let’s find out the answer and choose your perfect match!

GPTzero vs Turnitin: A Quick Overview

What is GPTzero?

GPTzero - The popular AI Detector

GPTzero – The popular AI Detector

GPTzero is a shining star in AI text detection. More specifically, it allows users to detect the authenticity of their content for free. Thanks to its great offers, it soon becomes one of the priority options for educators, students, and content creators who want to know if there is any AI touch in the writing. Besides this functionality, GPTzero also offers plagiarism (but in a paid plan, which we’ll discuss later).

What is Turnitin?

Turnitin - Top Plagiarism Checker for Educational Institutions

Turnitin – Top Plagiarism Checker for Educational Institutions

Turnitin is a trusted name in plagiarism detection, widely used in schools and universities. In fact, it doesn’t catch plagiarism; it compares your written work with its massive database of academic papers and online sources to find any potential plagiarism. With the storm of AI content, Turnitin has recently added an AI detection feature to its package, making this platform more functional for students and instructors.

GPTzero Turnitin
Detection GPT-3.5, GPT-4 Bard, Human GPT-3.5, GPT-4 Bard, Human
Human-written text ⭐⭐ ⭐⭐⭐⭐
AI-generated text ⭐⭐⭐ ⭐⭐⭐⭐
Paraphrased text ⭐⭐⭐ ⭐⭐⭐⭐⭐
Free trials Yes No
Support GPTzero Support Center, FAQ, Email Contact Turnitin Help Center, Consultant Schedule
API Yes (Enterprise plan) No
Chrome extension Yes No

GPTzero vs Turnitin: Comparing The Main Features

When choosing between GPTzero and Turnitin, it’s crucial to look at the main features that matter to you. Let’s break down the big three.

AI Detection

Regarding this functionality, GPTzero might be more experienced. It’s able to detect content generated by ChatGPT, GPT4, Google-Gemini, Claude, LLaMa, and many new AI models.

It has two modes for scanning: Basic scan and Advanced scan. While the first mode just tells you the possibility of AI-written content, the second one highlights those sentences that drive AI probability, which makes the adjustments more convenient.

The Advanced AI-text Scanning by GPTzero

The Advanced AI-text Scanning by GPTzero

As you use this feature by GPTzero, you’ll receive quick and visually clear results, which are beneficial for first-time users.

Turnitin’s AI Detector is a new feature that claims to identify ChatGPT or AI text 98% of the time. It helps teachers spot text in student assignments that deviates from typical human writing, promoting academic integrity and aiding in the review process.

Plagiarism Checker

Well, Turnitin is truly the “golden child” of many educational institutions. It’s known for its expansive database, including academic research, student papers, journal publications, web content, and more. Thanks to this resource, any sign of duplicates or even partial matches will be caught. As you scan students’ work, the platform presents you with the most detailed Similarity Report of matched text and source links. This makes it easier to make informed decisions and reduces the similarity score.

Maybe You’re Interested: What Percentage of Plagiarism Is Acceptable in 2025?

Plagiarism Checking Tool by GPTzero

Plagiarism Checking Tool by GPTzero

GPTzero might not be the first choice among schools and universities. However, if you’re an individual user who just wants to scan your piece of writing freely, GPTzero might be a good choice. Its process is quick, showing you highlighted plagiarized parts (if any) and links to the matched sources they found.

Accuracy

We’ve tested GPTzero and seen that this tool is generally accurate at spotting pure AI-generated text, though it might mislabel heavily edited AI text. Its accuracy also depends on how updated its detection models are.

Needless to say, Turnitin has a solid track record through years of refinement in plagiarism detection. Its new AI detection feature continues to evolve, so it may still have occasional false positives or negatives.

Related Article:

Is Using AI Considered Plagiarism? Find Out the Hidden Facts

Turnitin vs GPTzero: The Pricing

GPTzero

Pricing Plans of GPTzero vs Turnitin

Pricing Plans of GPTzero vs Turnitin

Free plan:

  • AI detection: GPTzero allows you to scan up to 10,000 words monthly. Besides its Basic scan, you can approach the Advanced scans five times.
  • Plagiarism: Check up to 5,000 characters each time

Paid plan:

  • GPTzero offers three different pricing plans, starting at $14.99/month. In addition to AI scanning and plagiarism detection, it also helps users check vocabulary and grammar.
  • GPTzero also has plans for teams and enterprises, which include API integration for more convenient usage.

Turnitin

Unlike GPTzero, Turnitin usually works on an institutional licensing model. This means that it offers subscriptions for colleges, universities, and organizations. Individual pricing is less common, so your access is often through your teacher, educational institution, or employer.

If you are a student and don’t have a class ID, here are our tips to use Turnitin for free.

GPTzero vs Turnitin: Which One Is Better?

Well, both platforms have developed solutions for flagging AI-generated and plagiarized content. However, each shines in its own way.

As you might realize, GPTzero stands out with its straightforward approach and focus on identifying AI-generated text for AI detection. Its plagiarism feature is also improving, but this is still a good option if you need a quick check.

On the other hand, Turnitin is the more established platform if you need a plagiarism checker with a massive database and integrated learning tools, especially in academic settings.

Related Articles:

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Turnitin vs Grammarly: Choosing Your Ideal Plagiarism Checker in 2025

Conclusion

So, choosing between GPTzero and Turnitin depends on your needs and situation. While Turnitin is suitable for schools and institutions in plagiarism detection, GPTzero is a comprehensive AI-detecting and plagiarism-catching solution for any user.

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Zoran Trimmel
Zoran Trimmel
Zoran Trimmel is an AI specialist who simplifies complex technical concepts. He evaluates emerging AI platforms for our technology website and produces insightful articles on AI and tech tools, thanks to his attention to detail and effective communication skills.
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