GPTZero Reviews: Is It Reliable for Accurate AI Content Detection?

Tim Daws

Tim Daws

Sep 21, 2024

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Nowadays, AI content generation tools are a part of every content marketing strategy. You may even be confused about whether the blog you’re reading is written by a human or just a product of another AI tool.

As AI technology progresses, there are many AI content detection tools like GPTZero that can help you differentiate the AI written content from genuine human words.

This GPTZero review guide will explore the key features, and at the end, we’ll know if it’s a reliable AI content detection tool.

GPTZero reviews

In This Article

Part 1: What is GPTZero?

GPTZero is an artificial intelligence detector that was developed and maintained by a student of Princeton University, Edward Tain. It scans a document or written text to check if it’s written by AI tools like ChatGPT, Gemini, etc.

The work behind GPTZero is advanced Machine Learning, Perplexity, and Burstiness to test language predictability. The model has been trained on both AI and human-written datasets so that it can learn to categorize the content. 

Part 2: Key Features and Capabilities of GPTZero

Other than detecting AI-generated content, GPTZero has many different features that help users know the authenticity of the content perceived on the internet.

Some of the primary features and capabilities of GPTZero include.

Detecting AI Content

GPTZero is trained to detect content generated by a wide range of AI models, including ChatGPT, GPT-3, GPT-3.5, GPT-4, GPT-J, Gemini, Jasper.ai, and other AI-based tools and languages.

Confidence Rating

Most AI content detectors don’t have a confidence meter, but GPTZero doesn’t just say that the content is human-written or AI-written; it shows how much AI has been used in the content. It offers a shield of transparency that allows users to determine the chances of AI-generated content.

Text Highlighting

GPZero highlights the section of texts that have higher chances of being generated through AI tools. It helps users to either change it or verify it for accuracy.

Versatile Application

Unlike other AI detectors, GPTZero has its very own Chrome extension that can detect the authenticity of content in real time. You can also check AI-generated social media captions, reviews, blogs, and news articles.

Part 3: How Does GPTZero Detect AI?

With GPTZero, you can easily detect AI-generated texts; there is detailed work behind the model. The GPTZero approach is to use an AI algorithm to compare with existing GPT models. It mainly focuses on two main metrics to detect AI-generated text:

Perplexity

Measuring the potential of a probability distribution or probability model to predict the text is Perplexity. GPTZero uses this technique to measure text predictability. If the perplexity is higher, then the text is less predictable and more complex.

Burstiness

Burstiness means the changes in the perplexity graph throughout the entire content. It detects changes in the predictability of the text.

GPTZero Algorithms

GPTZero works on an advanced algorithm to evaluate perplexity and burstiness within the text. It examines the differences between how humans and AI write, focusing on the clarity, creativity, and complexity of the content.

Part 4: How Accurate is GPTZero?

To check the accuracy of GPTZero, we scanned three blogs generated using ChatGPT 4o.

Blog 1:

Results of GPTZero scan for AI content-round-one

This blog talks about how teachers and schools use AI to improve education. It covers the benefits and challenges of AI in classrooms. As expected, GPTZero labeled this blog as 100% AI-generated.

Blog 2:

Results of GPTZero scan for AI content-round-two

This blog discusses how parents can use digital tools to keep their children safe online. It was generated by AI, and per our expectations, GPTZero identified it as entirely AI-generated.

Blog 3:

Results of GPTZero scan for AI content-round-three

This blog explores the insights from experienced authors on how to build believable and engaging stories. Once again, GPTZero correctly flagged this blog as 100% AI-generated.

Part 5: Use GPT0 to Analyze The Real Writing and AI Humanizer Output

To discover more about GPTZero’s AI detection capabilities, we took three written human passages and scanned them on the website. Here are the results.

Round 1

First, we scanned a how-to article completely crafted from scratch. It gave a reasonable score of 97% original.

AI Score : There was 3% AI in the content.

GPTZero human written content score round one

Round 2

We scanned an info article on the tech genre and got a moderate score of 95% original.

AI Score : GPTZero spotted 5% AI in the content.

GPTZero human written content score round two

Round 3

Next, we scanned an affiliate article on How to Lace Up Boots and received affirmation that the text was human-written.

AI Score : GPTZero spotted 5% AI in the content.

GPTZero Human written content score round three

These results affirm that GPTZero is fairly reliable and accurate.

Here is a comparison of the human-written and AI content results provided by GPTZero.

Type of Content Human-Written AI Content
Round 1 3% 100%
Round 2 5% 100%
Round 3 5% 100%

Part 6: Comparison of GPTZero with Notable AI Detection Tools

This section will explore the accuracy of GPTZero compared to the top AI content tool available online. Is it better than them or ineffective? You will find the answer here.

GPTZero vs ZeroGPT

GPTZero is available for free, but it only lets you scan 5,000 characters worth of content for free. If you want to scan more, it offers the Essential package that starts at $10 per month, allowing up to 150,000 words. The Premium package can scan 300,000 words monthly at $16, and the Professional plan lets you scan 500,000 words for only $23.

However, ZeroGPT is much more cost-effective, offering 15,000 characters per scan for free.

ZeroGPT didn’t detect any AI in our human-written content and gave a perfect score.

AI Score : 0% of the text was AI.

ZeroGPT human content score

However, the score for the ChatGPT article is below GPTZero. It predicted that 99.08% of the scanned content was AI.

AI Score : 99.08% of the text was AI.

ZeroGPT AI content score

Here is the comparison table.

Tools GPTZero ZeroGPT
AI Detection Score in Human-Written Content 3% 0%
AI Detection Score in AI-Written Content 100% 99.08%

GPTZero vs Turnitin

Turnitin is one of the most reliable AI content detection tools, and it didn’t disappoint here. The human-written text correctly got a perfect rating.

AI Score of Turnitin for Human Content: The content was declared 0% AI.

Turnitin human content score

Our AI-generated article got 100% detection by Turnitin.

AI Score of Turnitin for AI-Generated Content: The content was declared 100% AI.

Turnitin AI content score

Review the following table.

Tools GPTZero Turnitin
AI Detection Score in Human-Written Content 3% 0%
AI Detection Score in AI-Written Content 100% 100%

GPTZero vs Copyleaks

You can purchase 100 credits at only $16.99 using Copyleaks. It generally doesn’t give much of the entered content written by AI, but it definitely highlights it.

On this occasion, the entire of our human-written article was rated non-AI.

AI Score of Copyleaks for Human Content: It detected 0% AI.

Copyleaks human content score

The score for the ChatGPT article was as expected as well. Copyleaks declared the whole passage as AI.

AI Score for Copyleaks for AI-Generated Content: It was 100% AI.

Copyleaks AI content score

This table has summarized the outcome.

Tools GPTZero Copyleaks
AI Detection Score in Human-Written Content 3% 0%
AI Detection Score in AI-Written Content 100% 100%

GPTZero vs WRITER

With Writer, you can scan up to 5,000 words without purchasing any credits. The tool is easy to use with an intuitive interface, and it is pretty accurate as well. Writer detected only 3% AI in our human-written article.

AI Score for WRITER for Human Content: The content was only 3% AI according to WRITER.

WRITER human content score

However, the score for the ChatGPT content was far from accurate. It only detected 32% of the entered passages as AI.

AI Score for WRITER for AI-Generated Content: The content was 32% AI.

WRITER AI content score

Check out the following table.

Tools GPTZero WRITER
AI Detection Score in Human-Written Content 3% 3%
AI Detection Score in AI-Written Content 100% 32%

GPTZero vs Sapling

Sapling not only detects AI but also offers tools like Rephrase and AutoComplete to professionally rewrite and format your article. It offers plans starting from $25 monthly.

However, it was pretty strict while scanning our human-written article. Even though we didn’t use assistive tools like Grammarly, it detected 25.1% of the content as AI.

AI Score for Sapling for Human Content: Sapling detected 25.1% AI in the human content.

Sapling human content score

The score for the AI content on Sapling was as expected. All of the entered text was detected as AI.

AI Score for Sapling for AI-Generated Content: It was 100% AI.

Sapling AI content score

Here is the table to check the output scores.

Tools ZeroGPT Sapling
AI Detection Score in Human-Written Content 3% 25.1%
AI Detection Score in AI-Written Content 100% 100%

GPTZero vs Content at Scale

Compared to GPTZero, Content at Scale offers more words per process for free. You can detect 2,500 words of content without even creating an account. Moreover, it offers 25,000 words access for $49 monthly. It is pretty accurate as well, as the tool didn’t detect any AI in our original article.

AI Score for Content at Scale for Human Content: The content was declared original.

Content at Scale human content score

As for the ChatGPT article, the tool highlighted which section it felt was AI. The overall rating was the content was written by AI.

AI Score for Content at Scale for AI-Generated Content: The entire was AI.

Content at Scale AI content score

Check out the following table.

Tools GPTZero Content at Scale
AI Detection Score in Human-Written Content 0% Original
AI Detection Score in AI-Written Content 100% AI Content

GPTZero vs Crossplag

You can purchase credits without subscribing to the monthly package on Crossplag. The free package only offers 10 credits, meaning that you can scan 1,000 words. You can get more credits starting at the price of 9.95 euros.

However, it didn’t give an accurate score as it detected AI in all of our human-written content.

The tool

AI Score for Crossplag for Human Content: It declared the content to be 100% AI.

Crossplag human content score

The score of the AI-generated text was accurate, though.

AI Score for Crossplag for AI-Generated Content : The content was declared 100% AI.

Crossplag AI content score

Here is the comparison table.

Tools GPTZero Crossplag
AI Detection Score in Human-Written Content 3% 100%
AI Detection Score in AI-Written Content 100% 100%

GPTZero vs Originality AI

Originality is the go-to tool for detecting AI for users from all backgrounds. It offers the ‘Pay As You Go’ plan that gives 3,000 credits for $30. The monthly plan is accessible for only $14.95. As for the content detected, it gave a perfect score for our human-written article on gamer slang.

AI Score for Originality for Human Content: 0% AI was detected.

Originality human content score

The rating for the AI text was also perfect, as not a single sentence got passed Originality’s detection.

AI Score for Originality for AI-Generated Content: The tool spotted AI in 100% of the content.

Originality AI content score

Check out the table.

Tools GPTZero Originality
AI Detection Score in Human-Written Content 3% 0%
AI Detection Score in AI-Written Content 100% 100%

Part 7: How Reliable is GPTZero?

Want to know how the public perceives GPTZero? We have gathered some personal as well as public opinions and critical reviews regarding GPTZero.

7.1 What the Individual Users Think about GPTZero?

Individual users love the positive experience offered by GPTZero as it has a user-friendly and intuitive interface.

They loved that you don’t have to log in before using the free version; just paste your content below 5000 characters and hit the CHECK ORIGIN button. It will scan your desired text within seconds, letting you know if it’s written by an AI or human.

Most of them also liked the premium plan, where you get more features and can extend your scanning limit to lengthier passages.

7.2 What the Public Thinks about GPTZero?

While having a wide range of usage and immense popularity among users, GPTZero doesn’t have credibility as an AI detection among the public.

Most Reddit threads are filled with questions like “Are AI content detectors like GPTZero credible?” “Is it worth the subscription for Premium GPTZero?” Many of those users also discuss the inaccuracy in results, confusing scan reports, and false positives.

However, many leading schools worldwide and skilled teachers trust GPTZero and use it to check if students are using AI to write their assignments or creative essays.

Part 8: GPTZero’s Pricing

GPTZero offers exclusive and affordable pricing; you can try out the free version, scan a short passage, and later buy a subscription according to your needs.

8.1 What are the Price Plans of GPTZero

GPTZero starting plans are cheap, mainly for students, at just $15 per month.

Premium

One of the most popular subscription packages is the premium version, with $24 per month. It is ideal for students or teachers who want to evaluate their assignments, extending beyond the 5000 characters limit, specifically larger passages to scan in the future.

Professional

The Professional package is meant for office use and scanning formal documentation with a subscription fee of $35 per month.

GPTZero offers a vast range of features within this pricing, expanding character limits with each subscription to scan your content.

8.2 Comparison of each pricing plan of GPTZero

Here’s the comparison among pricing plans for GPTZero subscription:

Pricing per month Words Scanned
Essential Plan $15 150,000
Premium Plan $24 300,000
Professional Plan $35 500,000

If you’re more drawn to annual packages, then you can get 33% savings on your GPTZero subscription. Also, for trial, you can always scan your content under 5000 characters for free.

Part 9: Advantages and Disadvantages of GPT0

Just like every other software, GPT0 also has its pros and cons, listed as follows:

Pros

  1. Proper Detection
  2. One of the biggest advantages is that GPTZero assesses the text to know if it’s written by AI, helping you maintain authenticity and reliability in content assessment.

    Language Understanding

    GPTZero understands language patterns well, which helps it effectively detect AI-generated content based on how it’s written.

  3. User Interface And Experience
  4. GPTZero offers a simple, user-friendly interface that makes it easy for anyone to use without complications.

Cons

  1. Accuracy Concerns
  2. GPTZero can detect AI written content, but proper preciseness in detecting AI hasn’t been proven. Just like the above, many test cases show that GPTZero sometimes misidentifies human and AI content. Especially in professional and academic settings, you need accuracy.

  3. Competition
  4. There is tough competition in the market for AI content detection software, including ZeroGPT and Originality, that offer similar services with advanced features. It gets difficult to stay relevant in such a market.

  5. Reliability
  6. As AI is constantly evolving, GPTZero needs regular updates to stay effective. Generative AI-based models have been introduced and are changing faster than many content detectors, putting a question mark on the reliability of GPTZero.

Part 10: How to Bypass GPTZero?

Bypassing GPTZero is often crucial to know the authenticity and origin of your content so that you can improve your writing quality. 

10.1 What Do You Need If You Want to Bypass GPTZero?

Although there are many reasons why you want to bypass the GPTZero AI Content detector, some of them are:

  • Avoiding False Positives
  • You can’t be super sure that GPTZero always scans accurately, and there’s a possibility that it marks human-written content as AI. So, in such cases, you need to learn how to bypass GPTZero.

  • Maintain Productivity
  • Nowadays, you need writing assistance to kickstart your content creation. You can learn to bypass GPTZero to use AI to generate content without any worry and maintain your workflow productivity.

  • Improve Content Quality
  • Bypassing GPTZero can help you not only make your text not marked as AI content but also eliminate every error that most AI-written texts have.

    If you are looking for a tool to bypass GPTZero, then TextGo AI can help you with its wide range of features. It is an AI Humanizer that enables users to bypass AI detection using some of the most impressive bypassing tools. TextGo AI can rewrite your AI content, giving it a human-written touch so that it can’t flag it as AI.

TRY IT FREE

  • Advanced modeling technique to make the content original and human-written
  • Reliable content without anomalies that ranks on search engines
  • 100% undetectable with AI content detectors
  • No plagiarism in bypassed content

10.2 How to Make AI Text Undetectable by GPTZero?

TextGo AI

TextGo AI can make your content easily undetectable by GPTZero or other AI content detectors.

TRY IT FREE

Just follow the steps below:

Step 1. Add Input Text

On the TextGo AI official website, you can find a text box where you can paste your content. Consider the character limit and only paste the content that you want to change. It’ll help you avoid formatting issues in the future.

Add content to TextGo AI

Step 2. Humanize the Content

Once you’ve pasted the content you need to change, click on HUMANIZE, and TextGo AI will make it like human-written content. The AI humanizer edits your content, giving you an authentic output without any plagiarism.

Humanize content using TextGo AI

Step 3. Use Bypassed Output

Now that you’ve gotten your humanizer output, click the Copy button. You can easily publish the content anywhere without worrying about being detected as AI.

Copy the humanized content using TextGo AI

10.3 Test If TextGo Can Actually Bypass GPTZero Successfully?

If you want to bypass GPTZero’s eagle eyes, then humanize the content via TextGo AI. It will make error-free passage in no time, and provide your with an authentic AI score that will insert confidence in you to test out GPTZero.

We tried it for ourselves and got a reasonable score of 97% original, indicating that the content was non-AI.

GPTZero AI Score for TextGo Content: The text received a passing grade of 97%.

GPTZero score for TextGo AI content

10.4 Feedback about TextGo You Can’t Miss

Some notable responses from the happy users of TextGo AI:

Harry Barnes, Student

I faced difficulty bringing new concepts for my assignment and despite all my research, AI detectors often identify my work as AI written content. TextGo has helped me a lot to humanize my content and it even passes through plagiarism checks as well.

Sarah Wills, Content Writer

TextGo AI has helped me write blogs and newsletters with full confidence that I will not be tagged as AI content. It also helps my content rank on the first page of search engines due to its authenticity.

TRY IT FREE

Part 11: FAQs about GPTZero

Check out the following FAQs for more details on how GPTZero works.

11.1 What is a good GPTZero score?

A good GPTZero score is typically above 80% human and under 10% AI. It shows a higher probability that your text will be written by a human.

11.2 Who made GPTZero?

GPTZero was developed and maintained by Princeton University graduate Edward Tian.

11.3 Why does GPTZero say I used AI when I didn’t?

GPTZero often marks human-written content as AI-generated because most humans use high vocabulary or similar sentence structures that are found in AI-written content. However, GPTZero isn’t error-free; it is being trained continuously, so there will be mistakes.

11.4 How to cancel GPTZero subscription?

To cancel a GPTZero subscription, go to Settings, and then you’ll find the Manage Billing option on the left sidebar. If you just need a break, then you can also pause the membership for up to 3 months.

11.5 What does the perplexity score mean in GPTZero?

Perplexity score measures how well a text matches typical human writing. Lower scores suggest the text is more likely human-written, while higher scores suggest it might be AI-generated.

Conclusion

To sum up this GPTZero review, the tool has proven to be useful for many educators and institutions. It detects AI-written content efficiently and has a profound understanding of language patterns. While some users have reported false positives, many still find it a valuable resource.

However, like any tool, GPTZero is not perfect and may occasionally make mistakes. It’s important to use it just to evaluate written work rather than relying on it exclusively.

If you’re looking for an AI humanizer that can bypass AI content detectors like GPTZero, try out TextGo AI. It offers advanced features to make sure your content remains undetected by AI detectors, giving you peace of mind and more control over your writing.