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best ai detector

If you're looking for the best AI detector, you've come to the right place.

In recent years, the rise of generative AI has captivated the general public. Several AI models have emerged, including OpenAI's ChatGPT (GPT-3, GPT-3.5, GPT-4, GPT-4o), Google's Gemini (1.5, 2.0), and Anthropic's Claude (2, 2.1, 3, 3.5, 3.7).

The widespread availability of ChatGPT and other AI tools has sparked excitement across various fields, including education, research, training, and content creation. These AI models can generate text in multiple languages, such as French, English, Italian, Spanish, and Arabic, simply by responding to user prompts.

 

We have listed and compared for you the best AI detectors in 2025!

 

Discover the best AI detectors:

 

At the end of the article, you will also find the visual summary of the comparative analysis.

best AI detectors
best artificial intelligence detector

AI Detector & ChatGPT Detector: What is it ?

An AI detector, also called a ChatGPT detector, is a tool designed to distinguish between human-written and AI-generated text. It helps identify passages that may have been produced by artificial intelligence.

 

AI Detector vs. ChatGPT Detector: What’s the difference?

When searching online, you may come across different terms such as AI detector, AI checker, and ChatGPT detector.

From a purely semantic perspective, a ChatGPT detector is theoretically designed to detect text generated specifically by ChatGPT and its various models, including GPT-2, GPT-3, GPT-3.5, and GPT-4. This means it may not be as effective in identifying content generated by other large language models (LLMs) like Gemini Pro, Claude, or Mistral. In that sense, a ChatGPT detector could also be considered a GPT-4 detector, GPT-3 detector or GPT-2 detector, depending on its training.

However, in practice, AI detectors, ChatGPT detectors, and AI checkers are often quite similar. Most modern AI detection tools are trained on leading generative AI models like ChatGPT and Gemini. Some solutions like Compilatio extend their training to additional models such as Claude, Grok, Jasper, and Mistral, depending on their intended use.

To choose the best AI detector for your needs, check which models it can analyze and, more importantly, its detection accuracy.

 

Is ChatGPT detectable?

Are ChatGPT and Other AI Detectable?

A frequent concern among users, researchers, teachers and even students is whether ChatGPT and other generative AIs are detectable.

Following various in-depth tests on the detection of content produced by generative AIs, it has been shown that it is statistically possible to identify AI content and therefore to detect texts generated by ChatGPT, Gemini, Claude, DeepSeek and other AIs.

An AI Detector will try to recognize the writing style of the generative AI (GenAI), based on certain subtleties in the texts: context, tone, cultural aspects of the language, etc.

what is the best ai detector

Who Uses an AI Detector and Why?

In this context of universal accessibility to AI tools such as ChatGPT or Gemini; authenticity and originality of content are serious issues.

The main users of AI detectors are therefore: educational institutions and teachers, students and professionals in the publishing and editorial fields.
 

In the fields of education, it is important to ensure that a student's work (homework, essays, dissertations and theses) is original, with properly cited references.

If the teacher cannot ensure the originality of the students' work, he or she cannot ensure that the students have learned their lessons well. That's why it's so important to check the authenticity and originality of your writings.

From the student's point of view, the search for ease in writing can sometimes lead to fraudulent practices: plagiarism, ghostwriting, etc.
 

For editors and professionals, using an AI detector can help verify the source of content. This can be particularly useful in IT to verify the source of code, or in web copywriting to verify the source of content produced by a service provider.
 

Bear in mind that the information provided by generative AIs, such as ChatGPT, may be false and therefore contribute to misinformation.

best ai detection tool

How to Choose the best AI Detector?

With several AI detection tools available, selecting the best AI detector requires careful consideration. 


Here are key factors to help you make a wise decision:

  1. Choose a reliable AI detector: look for a tool with high detection rates and consistent performance across different AI models
  2. Choose an experienced AI detection tool: not all AI detectors are built the same. Some have been developed recently, while others have years of refinement behind them. A tool with an established track record is more likely to provide reliable results.
  3. Choose an AI detector based on your needs: depending on whether you are a teacher from an academic institution, a student or a Professional.

Top 11 best AI detectors compared

 

Focus on our comparison methodology

We conducted an in-depth study to compare the 11 best AI detectors. We tested these ChatGPT detectors with the aim of assessing the reliability of each tool.

We analysed 125 English texts, ranging from 250 to 2500 characters, in the 11 AI Detectors. The texts analysed contain human-written texts, texts generated by ChatGPT and texts generated by YouChat.

The final result of our tests is a reliability rate of analysis for each AI Detector, based on the same contents.

 

 

Compilatio ChatGPT detector

Compilatio AI Detector

 

Presentation of Compilatio AI Detector

  • French company specialised in plagiarism prevention and detection. 
  • AI Detector based on GPT2, GPT3, GPT3.5, GPT4, Gemini, Youchat, etc.
  • Multilingual AI Detector tested in 24 languages: French, English, Italian, Spanish, Portuguese, German, etc. 
  • AI Detector integrated into solutions Compilatio Magister+, Compilatio Studium and Compilatio Copyright+.
  • Results displayed as a percentage of texts potentially written by AI.

Results of our tests on Compilatio AI Detector

  • 125 English texts analysed.
  • 46/50 human-written texts recognised, i.e. 92% reliability on human text recognition.
  • 66/75 AI-generated texts recognised, i.e. 88% reliability on the recognition of AI-generated texts.
  • Overall reliability rate: 89.60%*.

 

*This reliability rate was calculated in February 2023, based on the tests carried out to establish this comparison. The reliability rate of the Compilatio AI detector now stands at 98.5% according to tests carried out in early 2025. For more information, see our guide article “How reliable is the Compilatio AI detector?”.

Draft & Goal ChatGPT detector

Draft & Goal ChatGPT detector

 

Presentation of Draft & Goal ChatGPT detector

  • Canadian company specialised in the development of marketing tools.
  • ChatGPT Detector, based on GPT2 and GPT3.
  • Bilingual ChatGPT Detector: French and English.
  • Results displayed as % of AI content in text.

Results of our tests on Draft & Goal ChatGPT detector

  • 118 English texts analysed.
  • 43/50 human-written texts recognised, i.e. 86% reliability on human text recognition.
  • 59/68 AI-generated texts recognised, i.e. 86.76% reliability on the recognition of AI-generated texts.
  • Overall reliability rate: 86.44%.
GLTR Test-2 ChatGPT Detector

GLTR Test-2 (Giant Language model Test Room): ChatGPT Detector

 

Presentation of GLTR Test-2: ChatGPT detector

  • ChatGPT Detector developed by researchers at MIT-IBM Watson AI lab and Harvard NLP.
  • ChatGPT Detector, based on GPT2.
  • No information provided on the languages processed by this AI Checker.
  • Results are displayed as different colours for each word according to the probability of the AI predicting the word.

Results of our tests on GLTR Test-2: ChatGPT detector

  • 125 English texts analysed.
  • 49/50 human-written texts recognised, i.e. 98% reliability on the recognition of human texts.
  • 55/75 AI-generated texts recognised, i.e. 73.33% reliability on the recognition of AI-generated texts.
  • Overall reliability rate: 83.20%.
gptzero Chatgpt detector

GPTZero - AI Content Detector

 

Presentation of GPTZero - AI Content Detector

  • AI Content Detector created by Edward Tian, a 22-year-old student at Princeton University (USA).
  • AI Content Detector, based on the GPT-3 model.
  • No information provided on the languages processed by this AI Detector.
  • Results are displayed as a final rating: human or AI text.

Results of our tests on GPTZero - AI Content Detector

  • 125 English texts analysed.
  • 42/50 human-written texts recognised, i.e. 84% reliability on the recognition of human texts.
  • 59/75 AI-generated texts recognised, i.e. 78.67% reliability on the recognition of AI-generated texts.
  • Overall reliability rate: 80.80%.
chat gpt 3 detector

BrandWell - AI Text Detector

 

Presentation of BrandWell (formerly known as Content at Scale) - AI Text Detector

  • Company specialised in the development of marketing solutions.
  • AI Text Detector based on GPT-3.
  • No information provided on languages processed by this AI Content Detector.
  • Display of results as % of AI and Human content.

Results of our tests on the AI Text Detector of BrandWell

  • 125 English texts analysed.
  • 43/50 human-generated texts recognised, i.e. 86% reliability on human text recognition.
  • 57/75 AI-generated texts recognised, i.e. 76% reliability on the recognition of AI-generated texts.
  • Overall reliability rate: 80%.
best free ai detector

DetectGPT from Sokat

 

Presentation of DetectGPT from Sokat

  • American company specialised in the development of AI solutions.
  • No information on the detected artificial intelligences by this AI Detector.
  • No information on the languages processed by this AI Detector.
  • Results displayed as % of AI content.

Results of our tests on DetectGPT from Sokat

  • 123 English texts analysed.
  • 49/50 human-written texts recognised, i.e. 98% reliability on human text recognition.
  • 46/75 AI-generated texts recognised, i.e. 61.33% reliability on the recognition of AI-generated texts.
  • Overall reliability rate: 77.24%.
best AI checker for plagiarism

Crossplag AI Detector

 

Presentation of Crossplag AI detector

  • American company specialising in similarity detection.
  • No information communicated on the detected Artificial Intelligences by this AI Checker.
  • ChatGPT Detector for English texts only.
  • Results displayed as % of AI content.

Results of our tests on Crossplag ChatGPT detector

  • 125 English texts analysed.
  • 43/50 human-written texts recognised, i.e. 86% reliability on human text recognition.
  • 52/75 AI-generated texts recognised, i.e. 69.33% reliability on the recognition of AI-generated texts.
  • Overall reliability rate: 76.61%.
best AI Detector

Kazan SEO - AI Detector

 

Presentation of Kazan SEO - AI Detector

  • Company specialised in the development of tools to help optimize the natural referencing of websites.
  • No information on the artificial intelligences detected by this AI Detector.
  • No information on the languages processed by this AI Detector.
  • Results displayed as % of real or artificial text.

Results of our tests on Kazan SEO - AI Detector

  • 124 English texts analysed.
  • 40/50 human-generated texts recognised, i.e. 80% reliability on human text recognition.
  • 52/75 AI-generated texts recognised, i.e. 69.33% reliability on the recognition of AI-generated texts.
  • Overall reliability rate: 74.19%.
best ai content detector

AI Text Classifier - AI Detector (ChatGPT)

 

Introducing AI Text Classifier - AI Detector (ChatGPT)

  • AI Detector developed by Open AI, the company behind ChatGPT.
  • ChatGPT detector, based on GPT2 and GPT3.
  • AI Text Detector in English only.
  • Results are displayed as a rating: AI-generated text very unlikely, unlikely or uncertain.

Results of our tests on AI Text Classifier - Open AI Detector (ChatGPT)

  • 45 English texts analysed.
  • 22/28 human-generated texts recognised, i.e. 78.57% reliability on human text recognition.
  • 11/17 AI-generated texts recognised, i.e. 64.70% reliability on the recognition of AI-generated texts.
  • Overall reliability rate: 73.33%.

 

On July 20, 2023, OpenAI, the company behind ChatGPT, took the decision to stop development of AI Classifier: its free AI Detector.

Copyleaks AI Content Detector

Copyleaks AI Content Detector

 

Presentation of Copyleaks AI Content Detector

  • American company specialised in the development of similarity detection software.
  • AI Content Detector, based on GPT-2, GPT-3 and GPT-4, Gemini and other models.
  • Multilingual AI Detector
  • Display of results as % of text written by AI or human.


Results of our tests on Copyleaks AI Content Detector

  • 125 English texts analysed.
  • 48/50 human-written texts recognised, i.e. 96% reliability on human text recognition.
  • 42/75 AI-generated texts recognised, i.e. 56% reliability on the recognition of AI-generated texts.
  • Overall reliability rate: 72%.
Writer ChatGPT detector

Writer ChatGPT detector

 

Presentation of Writer ChatGPT detector

  • Company specializ-sed in the development of AI solutions for web editors.
  • No information on the detected artificial intelligences by this ChatGPT Detector.
  • No information on languages processed by this ChatGPT Detector.
  • Results displayed as % of AI and Human content.

Results of our tests on the Writer ChatGPT detector

  • 112 English texts analysed.
  • 39/41 human-written texts recognised, i.e. 95.12% reliability on human text recognition.
  • 38/73 AI-generated texts recognised, i.e. 52.05% reliability on the recognition of AI-generated texts.
  • Overall reliability rate: 68.75%.

Summary of the comparative analysis of the 11 best AI detectors

Here is a graph showing the reliability rates of each AI detector in relation to the number of tests performed:

comparison of the best AI detectors: find best ai detector
Discover Compilatio AI Detector

What is the Best AI detector?

According to reliability tests conducted on various AI checkers, Compilatio stands out as the best AI detector.

As a leader in plagiarism detection and AI content analysis, Compilatio specializes in educational integrity, supporting academic institutions, teachers, and students in over 40 countries for more than 20 years.

It’s important to note that the reliability tests were conducted in 2023, and since then, Compilatio’s AI detection technology has significantly improved. By early 2025, it achieved an impressive 98.5% accuracy rate, with less than 1.5% false positives, making it one of the most precise and trusted AI detectors available.

 

 

In conclusion, the detection of ChatGPT and AI content is possible thanks to AI content detectors. Using these tools, you can check whether a text has been written by an AI. Reliability varies according to the AI detector used.

Identifying the best AI detector depends on a number of factors. It's up to you to find the best AI detector/ChatGPT detector to suit your needs.

 

Also, we would like to remind you that artificial intelligence is part of our lives and that we need to adapt to this change, to learn to work with these tools. 

In education, for example, artificial intelligence can be useful to : 

  • improve the understanding of concepts by providing clear and concise explanations with concrete examples 
  • create interactive exercises that help students learn in a fun way

On the other hand, it remains important for all of us to check for AI and detect ChatGPT or other GenAI, in order to protect academic integrity and maintain authenticity of writings. 

 

 

FAQ

Can AI detectors detect ChatGPT?

Yes! Depending on the training and reliability of each AI detector, an AI checker can distinguish human content from potentially AI-generated content, in this case ChatGPT.

How does an AI detector work?

An AI detector is an artificial intelligence trained to recognize the writing style of generative AIs. By running the AI content analysis, you will obtain the percentage of AI content in the analyzed text, along with indications on AI-generated passages.

Is AI-generated content considered plagiarism?

It depends on the regulatory framework you operate in. In education, if your institution prohibits the use of generative AI, using GenAI for assignments may be considered fraudulent, with consequences similar to plagiarism. Always refer to your institution's regulations..

 

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To go further:

March 11, 2025
What are the Benefits of Artificial Intelligence in Education?
March 13, 2025
Artificial Intelligence in Education: Opportunities and Challenges in 2025