Top 10 Free ChatGPT Detectors to Use in 2025

Since its launch, the use of AI has been exponentially increasing in our daily lives. Adaptive AI technology can now create literature indistinguishable from human writing for the ordinary person. Integrating ChatGPT-like conversational AIs into various apps is a normal trend now. With this being the case, the need to identify human-generated content is an all-time high requirement.

So, this article lists a few of the best ChatGPT detectors available in the market to help you find authentic human-written content. These apps might not be 100% accurate, but they are your best bet in the war against AI-generated literature. Continue reading to find the best AI detector for your needs, and we will introduce the best PDF editor - UPDF with ChatGPT integration, allowing you to deal with your PDF documents with the help of AI. Please download it now.

How Can I Tell if the Text is Written by AI Tools?

It can be challenging to determine if a piece of text is written by AI tools, as they've become increasingly sophisticated. However, there are some signs you can look for to identify AI-generated content:

• Repetition: AI-generated text may contain repetitive phrases or sentences, which might not be apparent to the AI but something a human reader could pick up on.
• Lack of coherence: The content may lack a logical flow or have inconsistencies in the overall argument or narrative. Content that doesn't flow naturally can, of course, be written by humans as well. No doubt! However, there's a distinctive sense of disjointedness that often reveals itself.
• Unusual word choices: AI-generated text may include uncommon or awkward word choices, which might not fit the context or sound natural. Some idioms may be wrongly used, for instance. These are typically clues to AI-generated text.
• Grammatical errors: While AI tools have improved grammar significantly, they may occasionally make errors, especially with complex sentence structures.
• Overuse of certain phrases: AI-generated content may overuse certain phrases or clichés, which can make the content sound unnatural.
• Ambiguity: AI-generated text may be more likely to use vague language, as it may not fully understand the context or have a clear point of view.
• Lack of depth: AI-generated content may lack depth or nuance in the subject matter, often providing surface-level information without delving into the complexities of a topic.
• Absence of personal anecdotes: AI-generated text typically does not include personal experiences, emotions, or unique perspectives, which are common in human-written content.

To conclusively determine if a text is AI-generated, it's a much better idea to use text analysis tools or AI detection software designed to identify patterns and features associated with AI-generated content, which is what we're going to do now.

What is an AI Text Detector?

An AI Text Detector is a tool that uses artificial intelligence to identify whether a piece of text was written by a human or by an AI. These tools work by analyzing the text for certain patterns and characteristics that are common in human-written text, such as the use of grammar, punctuation, and vocabulary.

How do AI Text Detectors work?

AI Text Detectors use a variety of techniques to identify AI-generated text. Some of the most common techniques include:

• Natural language processing (NLP): NLP is a field of computer science that deals with the interaction between computers and human language. NLP techniques can be used to analyze text for certain patterns and characteristics that are common in human-written text.
• Machine learning (ML): ML is a type of artificial intelligence that allows computers to learn without being explicitly programmed. ML techniques can be used to train AI Text Detectors to identify AI-generated text.

Why Do You Need a ChatGPT Detector?

That brings us to the why? Why do we need such a detector in the first place? Well, there are several benefits to using this on your content before you publish it to the world.

• Identifying AI-generated content: AI Text Detectors can be used to identify AI-generated content, such as fake news articles or spam emails. This can help to protect users from being misled or scammed.
• Improving the quality of human-written content: AI Text Detectors can be used to improve the quality of human-written content by identifying and correcting errors. This can help to ensure that the content is accurate and easy to read.
• Detecting plagiarism: AI Text Detectors can be used to detect plagiarism by identifying content that has been copied from other sources. This can help to protect the rights of copyright holders.

Top 10 AI Writing Detectors

These tools were selected based on their accuracy, ease of use, and features. They all offer a way to identify AI-generated content, and some also offer plagiarism detection and other features.

1. Originality.AI

Originality.AI is a paid tool that is known for its accuracy. It offers a plagiarism scanner alongside the AI scanner, and it also highlights the specific sections of the content you paste that it predicts will and won't be AI. Originality.AI is a great tool for identifying AI-generated content. It is accurate, affordable, and easy to use.

Features

1. Get an overall score for content
2. Highlight AI-generated content so you can easily identify it
3. Get a breakdown of different elements within the content (predictability, probability, and pattern)

Pricing: Originality.AI costs $0.01 per credit, which scans 100 words.

2. Writer

Writer is a free tool that can be used to get an overall score for content. However, it is not super-accurate at identifying AI-generated content.

Features

1. Get an overall score for content
2. Highlight AI-generated content so you can easily identify it
3. Get a breakdown of different elements within the content (predictability, probability, and pattern)

Pricing: Writer is a free tool.

3. Copyleaks AI Content Detector

Copyleaks AI Content Detector is a free tool that offers a few interesting features, including an overall verdict (human or AI), a percentage likelihood that the text is human versus AI copy, and a Chrome extension.

Features

1. Overall verdict (human or AI)
2. Percentage likelihood that the text is human versus AI copy
3. Chrome extension

Pricing: Copyleaks AI Content Detector is a free tool.

4. OpenAI's AI Text Classifier

OpenAI's AI Text Classifier is a free tool that can be used to identify AI-generated content. However, it does not highlight AI-generated content so you can easily identify it.

Features

1. Identify human-generated content as “very unlikely” to be AI-generated
2. Identify content from OpenAI's own platform as "unclear" if it was AI-generated and "unlikely" AI-generated with and without the additional prompt

Pricing: OpenAI's AI Text Classifier is a free tool.

5. Crossplag AI Content Detector

Crossplag AI Content Detector is a free tool that can be used to get an overall score for content. However, it does not check for plagiarism or mark up individual sections of the content.

Features

1. Give an overall score
2. Not offer the ability to check for plagiarism or mark up individual sections of the content
3. Free for registered users

Pricing: Crossplag AI Content Detector is a free tool.

6. GPTZero

GPTZero is a tool that can be used to get an overall score for content. The free version is available, and it is easy to use. The paid version offers additional features, such as a plagiarism checker, highlighting AI content, and the ability to bulk upload multiple pieces of content.

Features

1. Gives you a score
2. Has some pre-loaded examples
3. Free and paid versions

Pricing: GPTZero has free and paid versions.

7. Sapling AI Detector

Sapling AI Detector is a tool that can be used to get an overall score for content. The free version is available, and it is easy to use. The paid version offers additional features, such as sentence highlighting.

Features

1. Offers free and paid versions
2. Has a Chrome Extension
3. API option available
4. Scores the content overall and gives highlighted results

Pricing: Sapling AI Detector has free and paid versions.

8. Content at Scale's AI Detector

Content at Scale's AI Detector is a free tool that can be used to get an overall score for content. It also provides a breakdown of different elements within the content (predictability, probability, and pattern) and offers pre-populated examples. However, it does not check for plagiarism or highlight individual sections of the content.

Features

1. Offers a score with a breakdown of different elements within the content (predictability, probability, and pattern)
2. Pre-populated examples provided

Pricing: Content at Scale's AI Detector is a free tool.

9. ZeroGPT

ZeroGPT is a free tool that can be used to get an overall score for content. It also highlights AI content so you can easily identify it. However, it does not check for plagiarism.

Features

1. Offers an overall score for detected content
2. Highlights AI content

Pricing: ZeroGPT is a free tool.

10. GLTR

GLTR is a free tool that can be used to get an overall score for content. It also shows whether each word within a text was one of the 10, 100, 1,000, or outside the 1,000 most likely words to be generated by AI based on the prior context in the text. However, it does not check for plagiarism.

Features

1. Offers some overall scoring
2. Displays the probability of each word being AI-generated
3. Learns from prior context

Pricing: GLTR is a free tool.

The Best AI-powered PDF Software for You to Use

Remember UPDF, which we mentioned earlier as the ideal PDF workflow tool? Well, that PDF editor tool has become a formidable player in content workflows. Here's why…

UPDF is a high-performance PDF solution with complete features. Whether you want to read, annotate, convert, or edit PDF files, you can deal with all the tasks in this single app. It is faster than Adobe Acrobat when opening large PDF files without a crush. You can rely on the quality of UPDF and below are some of the features:

• An attractive and highly functional UI
• Comes with built-in features for editing, annotating, file conversion, and PDF page organizing
• It has an advanced OCR tool for PDF. So UPDF's OCR can convert scanned PDFs and paper documents into searchable and editable PDFs.
• Use it as a simple PDF form filler to help you do taxes.
• Printing PDF files is available and you can print as per your requirements.

AI Features

All the answers provided by UPDF AI are almost 100% accurate, and the content generated by this tool is in a human tone to avoid AI deduction. Moreover, it offers a free plan in which you can upload 3 free PDF documents and can ask a maximum of 30 questions. Users are also allowed to export their UPDF AI conversations in text or Markdown format.

1. You can upload any lengthy document to this PDF editor, and the AI will smartly read and provide an accurate summary on command.
2. It can explain and interpret complicated technical data in any PDF file in simple language. UPDF AI can also simplify the information present in tables and charts for you.
3. You can also highlight text in your PDF and translate it to any language using the ChatGPT integration in UPDF.
4. Using UPDF AI, you can ask any question, even ones unrelated to the PDF, and get accurate answers. You can use this to bounce off ideas and enhance your creative flow.
5. UPDF AI can help you improve your writing by checking grammar and spelling. It can also rewrite your work or write new articles in a human tone.
6. With the help of UPDF AI, you can also solve complex mathematical questions or scenario-based problems.
7. The conversational AI can act as an assistant and create plans for your day or organize your meetings. You can also use UPDF AI to create marketing strategies and make your decision-making easier.

Conclusion

Ever since ChatGPT was officially released into the wild, it has grabbed the lion's share of every conversation around the world. The surprise here is that many of these are actually quite authentic. The GPT-3 that stunned the content creation world is now old news, and even more human-like intelligent generative AIs are emerging as you read this. But along with the wave of ChatGPT-like applications that are flooding the market, another very important tool has surfaced - the ChatGPT detector.

In this article, we introduced the top 10 AI detectors to help you distinguish whether the content is created by AI. We also introduced a great PDF editor with AI features - UPDF. Download this software now and enjoy the amazing features!