8 Best AI Content Detector Tools Every Writer Needs In 2024

Being a student, educator, blogger, or content creator, you have to maintain the authenticity of your content and prove that it is genuinely human and free from the influence of AI.

Luckily, AI content detector tools are now a valuable resource for you to make sure your text content is credible and avoid potential consequences in academic or professional settings. 

Below, we’ve listed the 8 best AI content detector tools, along with their features, pros & cons, and pricing so that you can choose the right one for your project. 

1. Quillbot

QuillBot AI Content Detector is a cutting-edge tool used by many professionals in varying fields to check the text and distinguish whether it is written by a human or generated artificially.  With its user-friendly interface, anyone can quickly upload or paste text to check for authenticity without having any technical expertise.

After running your content on Quillbot, you get an instant score (on a scale of 0-100). The tool also provides you feedback on which sections in the text are:

• Totally AI-generated
• AI-generated & AI-refined
• Human written & AI-refined
• Human-written

QuillBot’s AI content detection capabilities focus on identifying text generated by popular large language models. These include OpenAI’s GPT models (like GPT-3 and GPT-4), Google’s BERT, Meta’s LaMDA, and other Transformer-based models.

With these algorithms, Quillbot analyzes patterns, sentence structures, and language usage to determine the likelihood that the content was created by an AI. You even get to know if you or someone else has simply paraphrased the AI content to try to make it human. Afterward, you can rephrase the text yourself and then get rid of the AI parts. 

Another interesting fact about Quillbot is it supports multiple languages, so it does not matter if what you’ve written is in English, Spanish, French, or German, this tool can get the job done in no time. 

You get a bunch of other tools, along with AI content detection, while using Quillbot:

• Paraphraser (rewrite AI text)
• Grammar Checker
• Plagiarism Checker
• Summarizer
• Translator and others

Pros

• Easy to use with a user-friendly interface
• 94.66% accuracy for AI content detection
• Provides instant feedback to allow for quick revisions
• Multi-language support
• Affordable pricing

Cons

• Human-written content sometimes turns out to be AI, which can be a little frustrating.

Pricing

• Check 1200 words for free. For content with more than 1200 words, buy an annual ($2.50/mo), semi-annual ($6.66/mo), or monthly plan ($9.95).

2. ZeroGPT

The ZeroGPT AI content detector is designed to ensure the authenticity of written material in any language by offering a reliable tool for detecting AI-generated text. 

It can analyze text and tell apart human-written and AI-generated content with a precision of up to 98%. The tool is compatible with various AI writing models, including GPT-3, GPT-4, and other similar platforms, which makes it an obvious choice for users across different fields.

Another notable feature is its user-friendly interface, accessible to everyone, regardless of technical expertise. The process of detecting is quite simple: Input the text you want to analyze, and the tool will quickly scan and provide you with a verdict (0-100% score) on whether the content is AI-generated. 

Not only that, but you also see which sections in the text are purely AI, so you can modify your work for a better score.

ZeroGPT also offers real-time analysis based on these factors:

• Sophisticated algorithms examine language patterns to identify any inconsistencies or anomalies to provide you with a deeper understanding of the content’s authenticity.
• Syntax and semantics analysis checks the structure and meaning of the content to detect any potential manipulation or tampering.
• ZeroGPT’s machine learning capabilities continuously learn and improve, which means you get accurate results each passing day.

One restriction you often face is the limitation of the words while checking AI text. Other tools may allow you to check limited characters or words, but ZeroGPT allows up to 15,000 in one go in the free version. That’s a huge plus! Because you may never need to buy the ZeroGPT paid subscription as a student or blog post writer who writes less than this limit and then wants to check whether the work is trustworthy.

Pros

• High accuracy in detecting AI-generated content
• Compatible with multiple AI writing models
• Supports many languages
• Real-time report
• 15,000 free characters

Cons

• Limited to text-based content
• May require periodic updates to stay ahead of new AI models

Pricing

• The paid subscription costs $7.99/mo (PRO) and $18.99/mo (MAX), which includes PDF reports for AI content generations and 50-75 batch file checks.

3. Phrasly

Whether you’re analyzing articles, marketing materials, or academic papers, Phrasly AI offers a quick way to go through your content to make sure it is written by a human. It scans your text to flag possible AI-written sections in red so you can take further action. 

Phrasly also checks your content through third-party sources like ContentAtScale, Copyleaks, ZeroPGT, GPTZero, OpenAI, and TurnItIn to give you accurate results with almost 99.8% accuracy. 

Interestingly, this tool even provides you with ChatGPT, GPT-4, Human, and Human+AI text samples. This can help you understand and differentiate between human-written and AI content.

You’ll be amazed to learn that Phrasly uses the latest algorithm to humanize content that AI writes. All you need to do is either select its humanizer tool or paste the text in the AI Detectors, click Check For AI, and click Humanize in the result window. 

Phrasly will instantly use its knowledge of grammar, structure, and syntax to rephrase it and make it undetectable by Turnitin, GPTZero, Windson AI, Originality AI, and ZeroGPT. 

Unlike other AI detectors, Phrasly lets you check up to 2000 words at a time without any restriction on how many times you need. That, too, without any account registration or subscription. 

Moreover, this AI detector does not store your content on its server and removes it as soon as you close the tab. It also does not share it with any third-party source. 

Pros

• Simple UI with easy navigation.
• Detects if the content is written by GPT, Claude, or other content generation tools.
• Trained on over 300,000 samples of human and AI-generated content to give the best possible results.

Cons

• Sometimes, it detects false positives.

Pricing

• Free: Limited to 2,000 words per scan.
• Free Trial: 1 month trial period with basic AI detection bypass and 550 AI humanization words.
• Unlimited: $10.99 per month with advanced AI detection bypass.

4. ContentAtScale

 

ContentAtScale, renamed as BrandWell, has a proprietary tech stack that scans your content to detect patterns, understand sentence structure, analyze word choices, and other characteristics. It then shows you whether the sentences were written by Gemini, GPT, Claude, or other AI language models or by humans.

You can simply paste your content, upload a file, or provide a URL to your article, blog, social media content, web pages, or marketing emails and click Detect AI Content to get results, which divides your text into three categories:

• Green – shows the sentences or phrases that sound human-like.
• Orange shows text that is hard to tell whether it was written by AI or humans.
• Red – highlights the sentences that read like AI.

It even suggests you to rephrase your text by changing the sentence structures and using different word choices.

Also, ContentAtScales allows you to check up to 2500 characters for free. You can reset and re-detect the content as many times as you want and even scan it for plagiarism or humanize it with just a single click.

The good thing is that you can get full advantage of the ContentAtScale free version without any account registration or subscription. 

Pros

• Supports various file formats like Word, Doc, and PDF.
• Provides monthly stats for AI detection.
• Scans content with high accuracy.2500 free characters.

Cons

• Checks content in English language only.
• Can be tricked easily with little changes to the content.

Pricing

• Free: With access to basic AI tools.
• BrandWell Essentials: $249 per month with 7 days free trial and is limited to 1 user.
• Agents Add-on: $249 per month, which includes 2 brand projects and 1 additional user.

5. GPTKit

Developed by Dreamsoft Innovations, GPTKit is a one-of-the-kind AI detector that uses a multi-model approach to spot and classify your content into human-written or AI-generated content. 

Instead of just relying on a single algorithm, this tool uses 6 different methods to detect the possibility of AI in your text. Not only that but GPTKit is trained on 1 Million datasets, which is why it currently has an accuracy rate of 93%.

GPTKit never stores your data. In fact, it instantly removes your content from its server once the scan is complete and you get the result.

To use this AI detector, simply paste your content in the given field or click Upload Files, select your PDF or Word document from your computer and click Open. Then, select Submit to let GPTKit go through your text and give you the report. 

If the content is highlighted green, it means your content reads as human. Alternatively, if it is marked red, it has a robotic sentence structure and AI words.

The best part is that GPTKit offers 25 free credits if you are using it as a guest user. You can get an additional 200 credits after signing up for a free account. 

Also, in guest mode, GPTKit lets you scan up to 4096 characters for free. After registration for a free account, this limit increases to 6144 characters with up to 5 requests per minute.

Pros

• Create a team and share your credits with them in both free and premium versions.
• Free guest mode.
• Simple and easy-to-use UI.
• Faster processing speed with a 93% accuracy rate.

Cons

• Only limited to scanning text in the English language.

Pricing

• Free: $0 per month
• Unlimited (Personal): $ 5 per month with unlimited credits, up to 10 requests/minute, and 10,240 characters per request.
• Unlimited (Team): $10/month and includes unlimited credits, 30,720 characters/request, and 20 requests per minute.
• Unlimited (Institution): $20 per month with 153,600 characters per req, unlimited credits, and 153,600 characters/request.

6. Originality.ai

Originality AI is packed with features that make it incredibly useful for anyone who values unique content, like its ability to detect AI-generated content. The tool is user-friendly, with a straightforward interface that makes it easy for you to upload and scan documents. Within seconds, you receive a detailed report that highlights any text that might be AI-generated so you can quickly address writing issues. 

Originality.ai can detect AI text from different text generation models. These include:

• GPT-3
• GPT-3.5 (DaVinci-003)
• GPT-4, Gemini
• Gemini Pro 1.5, Claude
• Claude 3.5 Sonnet
• Llama
• Mistral
• Grok
• ChatGPT
• GPT-4o-mini

Based on advanced algorithms, Originality.ai can run the content that might have been written with these models and provide you with an exceptional 98%-99% accurate result with 2.0.1 Standard (BETA) and 1.0.0 Lite.  

Another noteworthy feature is the ability to support multiple file formats: text, PDF, Word documents, and more. This flexibility makes sure you can scan a wide range of file types without any hassle. Furthermore, Originality.ai provides team collaboration features that let you and your members check content within the same account. This is great for businesses and educational institutions where many people are involved in content creation and review processes.

Moreover, AI detection is not limited to the content you paste into the Orgiality.ai editor. It offers a website scan that helps you scan the entire site for AI content with a single click. Simply paste the URL and be done with it. 

If you find it a bit difficult to verify the authenticity of the content, install the Originality.ai Chrome extension and check the presence of AI right on Google Docs while writing or reviewing. 

Pros

• Combines AI detection with plagiarism checking for complete content analysis.
• Simple interface with easy-to-read reports.
• Scans various file formats.
• Credit-based system to know how much you’ll spend while checking the content for AI.

Cons

• Requires a costly paid subscription, which might not be affordable for everyone.

Pricing

• Pay As You Go ($60 one-time fee): Comes with 6000 credits as a starter and then you can buy more credits on an as-needed basis.
• Pro ($14.95/mo): Get monthly 1000 credits at a discounted price.
• Enterprise ($136.58/mo): Includes 15000 monthly credits, priority support, and access to API.

7. Winston AI

Winston AI is especially useful for content creators, educators, and businesses who want to make sure their content is original, authentic, and has a higher “human score.” This helps them stay away from synthetic content, avoid getting penalized by search engines, and rank their blog higher in the SERPs.

It is one of the most trusted AI detectors that lets you quickly analyze your content and get a detailed report on whether it has any robotic sentences, phrases, or words.

This tool can easily identify if your text is written by Google Gemini, Claude, LLAMA, ChatGPT, GPT-4o mini, GPT-4o, or any other known AI models with a high accuracy rate of up to 99.98%.

All you need to do is upload your file or paste your content, and Winston AI will give a detailed report that shows the odds of your content being written by a human or AI in percentage form with a sentence-by-sentence assessment map. You can even easily print the generated report for record keeping. 

Another noteworthy feature is its OCR (Optical Character Recognition) technology, which helps you quickly extract text from pictures or scanned documents with handwritten content to check its AI score.

On top of that, this AI detector supports multiple languages, which means you can scan your content written in English, Chinese (simplified), French, German, Spanish, Portuguese, and even Dutch. 

Pros

• Supports multiple file formats like .docx, .png and .jpg.
• GDPR compliant, which means it keeps your data safe and secure.
• Color-coded reports that show which sentences sound robotic or human.
• Available as a Chrome extension with 1000 extra free credits.

Cons

• Often detect false positives in handwritten AI texts.

Pricing

• Free: 2,000 credits per 14-day trial
• Essential: $12 per month with 80,000 credits.
• Advanced: $19/month with 200,000 credits, advanced plagiarism detection, up to 5 team members, and shareable PDF reports.
• Elite: $32 per month with 500,000 credits for AI detection and everything in the advanced plan, along with unlimited team members and top-up credits option.

8. CopyLeaks

CopyLeaks uses a special algorithm that instantly analyzes your text and gives you a report on whether it has any touch of AI. The tool covers Claude, Llama, Gemini, and GPT, along with all newer language models as they are released.

As a matter of fact, CopyLeaks is trained with 1 million AI and Human content, and because of this, its false positive rate is only 0.2%. 

On top of that, CopyLeaks supports over 30 languages, including:

• English
• Spanish
• Polish
• Romanian
• Arabic
• Turkish
• Korean
• Japanese
• Chinese (Simplified)
• French
• Russian
• Hindi
• Italian
• German, and more.

CopyLeaks can even analyze multiple files at a time to help you save time and schedule recurring scans. It also offers ORC technology to let you extract text from images and check its AI score.

You can also install its Chrome extension to access it on any web page and go through the content to check its authenticity. 

CopyLeaks also features a Folder option to help you place your scan reports and organize your data on the dashboard. 

Also, CopyLeaks checks the plagiarism in your text and generates shareable similarity reports that you can share with your supervisor, client, or team members through email or the dedicated workspace. 

Pros

• Supports multiple file formats like DOCS, JPG, PNG, and others.
• Imports content from file, text, or URL.
• 99% accuracy rate for detecting text.

Cons

• Only a few free credits to scan the text for AI.

Pricing

• AI Detector: $7.99 per month with up to 1,200 credits.
• AI + Plagiarism Detection: $13.99 per month.
• Enterprise & LMS: Custom pricing based on your needs.

FAQs