I Tested 30+ AI Detectors. These 10 are Best to Identify Generated Text.

Can AI-generated text be detected? Find the best AI detection tools for accuracy & pricing in 2025!

Anangsha Alammyan

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Feb 19, 2025

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My top 6 picks for the best AI detectors in 2025–

👉QuillBot

👉Winston AI

👉Proofademic

👉Pangram Labs

👉Detecting-AI

👉Undetectable AI

The Best AI Detectors Comparison Table

Table of Contents

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Introduction: What are AI Detectors?

AI is everywhere.

It’s changing the way we work, create, and interact online. Almost every post we see today has a high chance of being AI-generated.

The global AI market is projected to surpass $826 billion by 2030. AI-powered writing tools are growing at a 25% CAGR, and AI image generators are expanding at 17.5% CAGR through 2032.

Yes, AI makes life easier. It saves us time, money, and effort.

But are we all becoming increasingly dependent on AI?

Think about it.

1. Need gift ideas? Ask AI.

2. Don’t know the meaning of a word? Ask AI.

3. Don’t have the right opening sentence? Ask AI.

I’m sure everyone, from educators to policymakers, is guilty of this.

But they’re also turning to AI detection tools to protect against fraud.

In this article, I’ll break down 10 AI detection tools I’ve tested, along with why you should start using them in your daily routine.

Before we get started, if you’d like to watch a more candid video on why AI detectors are essential, you can check out this video —

Affiliate Disclosure: This post contains affiliate links. If you purchase through them, I may earn a small commission at no extra cost to you. I only recommend products I trust or use myself. Your support keeps my content journey going — thank you!

🙌 Additional author’s note: For some tools, I received complimentary access for review purposes, but all testing, reviews, and opinions are my own.

Best AI Detectors to Identify AI-Generated Content in 2025 (Reviewed & Ranked)

Let’s look at some AI detector tools you might want to consider.

1. QuillBot

QuillBot is one of the popular tools among writers as it is easy to use and gives accurate results.

This tool lets you detect AI-generated text, humanize text, correct Grammar, find citations, check Plagiarism, manage projects, and whatnot.

Let’s explore its AI Detector tool first.

How to detect AI text using QuillBot

Here’s how you can access the AI detector of QuillBot:

1. Go to QuillBot.com

2. You can see the AI Detector tool in the left panel.

QuillBot allows you to use its AI Detector without signing in and for free.

Now let’s test the free version and check its accuracy. Post that we’ll explore the paid version.

I asked ChatGPT to write a short essay that is engaging and not easily detected by AI Detector.

I have pasted the text in the AI Detector tool of QuillBot. Note that you can paste up to 1200 words in the free version.

Let’s check if QuillBot can differentiate between human-like text and AI-generated text.

You can paste the text or upload a file in any one of the languages like English, French, Spanish, German, Dutch, or Portuguese.

Click the “Detect AI,” and here we go.

AI text detection results

The following are the results:

The free version declared this text as 88% AI-generated, quite satisfactory.

QuillBot has many essential tools, including the Humanizer

Now let’s try to humanize the same text.

Oh shoot! The free version can humanize up to 120 words only.

I have added the first two paragraphs only. Check the result.

Seems like human-written. Now, I am going to copy-paste the humanized text in QuillBot’s AI Detector.

It indicates that 0% of the text is likely to be AI-generated. Cool.

I would like to check the humanized content on GPTZero. Let’s see.

Great! QuillBot Humanizer has passed the test of GPTZero as well.

Now it’s time to use QuillBot with one of the human-written content.

I am pasting one of my favorite articles I wrote on Medium. Of course, it’s human-generated, as I don’t use AI for writing my articles.

Voila! It works. It shows 0% AI-generated text. I am satisfied with the free version so far.

Now let’s check the premium version of QuillBot.

I purchased their premium plan to check all the tools.

If you want to purchase the premium plan or check the pricing, click on “QuillBot Premium” in the left panel. You can just tap on the “Upgrade” button to buy it.

Here’s how QuillBot Premium looks:

I have pasted the same ChatGPT-generated text in QuillBot’s AI Detector.

The result shows 78% AI-generated — works well.

I am going to paste the same text in AI Humanizer and check its accuracy. In the left panel, go to “More” for more tools and select AI Humanizer.

QuillBot gives the Basic and Advanced modes for humanizing AI-generated content.

The resulting text sounds humane.

Let’s check whether the humanized text passes the AI Detector test or not.

I have copied and pasted the humanized text into the AI Detector.

Let’s see the results.

Nice! The QuillBot Humanizer beats its own AI Detector.

Why not try its AI Detector with actual human-written content?

Again, I am checking one of my articles, and hopefully it will be accurate.

As expected, 0% AI-generated text.

QuillBot’s AI Detector surpassed all my tests, and I am quite happy with both the free and premium versions. I am also going to add its extension now.

Other AI tools in the QuillBot suite

QuillBot provides a good collection of AI tools to enhance your content.

There are mainly eight tools:

1. Paraphrasing tool

2. Grammar Checker

3. Plagiarism Checker

4. AI Detector

5. AI Humanizer

6. Translate

7. Summarizer

8. Citation Generator

As you scroll down, there are different categories of cool tools for you to explore.

You can also get QuillBot’s extensions for Chrome, Word, Edge, or Safari. It’s free.

Or, you can download the QuillBot app for your mobile phone.

I liked the QuillBot Flow, basically a next-generation word-processor tool, to manage projects.

It also provides various templates like Literature Review, Appendix, Index, Harvard, Newsletter, Resume, Project Proposal, and many more.

These tools and templates can make writing easy for anyone.

Pricing

When it comes to pricing, QuillBot is quite affordable.

You can get the premium plan for just $4.17 per month, billed annually. QuillBot also offers a 3-day money-back guarantee in case you don’t want the premium plan.

QuillBot Premium allows unlimited paraphrasing, advanced Grammar recommendations, humanizes text in advanced mode, unlimited access to AI Detector, and many more features.

If you’re an entrepreneur, you can get the team plan for your organization.

The best thing is that you can pause your subscription anytime you want.

QuillBot’s AI Detector is accurate when it comes to AI detection. I am satisfied with the results and happy to include QuillBot in my collection of tools.

It’s easy to use, and the free version works well too. It has several tools to write flawlessly, like AI Detector, Plagiarism Checker, Humanizer, Word counter, Spell Checker, and others.

QuillBot is suitable for writers, students, teachers, employees, and those who want to write accurately and improve their writing skills.

2. Winston AI

Winston AI is the only AI detector with a 99.98% accuracy rate. This tool can be used by educational institutions, for SEO, and to improve your content’s authenticity.

How to detect AI text using Winston AI

1. Go to Winston AI.

2. The homepage will display the AI detector.

3. Simply copy-paste your text and click on “Check AI score”.

4. You’ll need to sign up to view your score.

When you first enter the website, this is what it looks like:

Winston AI’s

Let’s use a sample text from Gemini this time. What I liked is that you can get a 14-day, 2,000-word scan trial for free, and you don’t need a credit card to sign up. This tool gives you a chance to test out the features for a decent amount of time before deciding whether to purchase it.

Results

Well, the tool works pretty well for a passage generated by Gemini.

Winston AI

You need to upgrade in order to use the Plagiarism detector tool or get writing feedback.

Let’s test this tool on one of my articles (100% human-written).

95% is a pretty good score when it comes to AI detectors.

How to detect AI images using Winston AI

Winston AI also has an “Image Scan” tool. Each scan costs 300 credits. I’m going to put this tool to the test using an image where one side contains a real selfie of mine, while the other has an AI-generated headshot. Let’s see if Winston AI can provide the right analysis.

Well, this is pretty interesting. I did edit the picture myself, so I guess Winston AI is correct in identifying the origin as human. Or perhaps the AI-generated headshot is so accurate that it’s evading detection by AI tools?

Winston AI also provides a certification — HUMN1 — to prove that the content on your blog is human-generated. You can integrate this with a WordPress plugin or use an XML sitemap.

Next, I’m testing out the “Text Compare” tool. Each comparison costs ¼ credits per word. On the left side, I’ve added a passage from my own article, and on the right, I’ve added the AI-generated version of the same passage.

Here’s what I got.

Only 5% similarity with the AI-generated version. That’s good news, right? This tool can help you analyze different writing styles, choose the best version, or even help you identify repeated sentences and words.

Winston AI can be easily integrated with Google Chrome, Zapier, Google Classroom, Microsoft Edge, and many others to make your work life much easier.

Video tutorial

For a detailed tutorial on how to use Winston.AI, you can check out this video guide on how to use an AI detector.

Pricing

The “Free” plan has a ton of options to choose from. If you’d like to try out their other tools like AI writer and AI humanizer, the “Unlimited” plan is pretty affordable, at just $12.99 per month.

I’d say the AI detector, content generator, and humanizer work perfectly well. I’m pretty impressed, actually. For the level of accuracy this tool provides, I think the pricing is quite reasonable. Definitely Phrasly.AI is one of the best humanizers I’ve used so far.

3. Proofademic

Proofademic is an academic AI detector that instantly detects content written using ChatGPT, Gemini, and other AI tools.

This tool can be used to detect AI-generated text in academic essays, papers, and articles. Proofademic also offers multi-language support, including French, Spanish, and more.

How to detect text using Proofademic

1. Go to Proofademic.

2. Sign up using your email or Google account.

3. Click on “New Document” to get started.

When you first enter the website, this is what it looks like:

Proofademic

As I mentioned earlier, once you’ve signed up, simply paste your content into the blank space under “New Document”. You can also upload a complete document for scanning.

I tested two passages generated by ChatGPT and Gemini, along with one passage from an article I originally wrote. What stood out immediately was the tool’s smooth UI. Pretty simple, hassle-free, and easy to navigate.

Results

Well, the generated article is fully AI-generated, and Phrasly.AI admits it. See the lines highlighted in red? That means those lines are AI-generated.

Let’s try and humanize it.

Well, that looks pretty clean. I know what to do next. Let’s test it out on GPTZero to see if it can actually bypass AI detectors.

It works! That’s amazing. The passage humanized by Phrasly.AI did bypass GPTZero’s AI detector. This is pretty cool, isn’t it?

Pricing

4. Pangram Labs

Pangram Labs claims that its AI detector is better than all other detectors out there in the market. This tool has been reviewed by the University of Maryland and has an impressive list of clients such as Quora, Featured, American Association for Cancer Research, and more.

But is this worth the hype? Let’s find out.

1. Go to Pangram Labs.

2. Sign up using your email or Google to get started.

Pangram Labs

The homepage looks pretty good. Maintains a nice balance between colors, spacing, and typography, and feels well-organized. For me, aesthetics and usability are equally important.

You can either paste your text or upload a file. I tested this tool using a passage generated by DeepSeek. You can also check for plagiarism simultaneously by clicking on “Check for plagiarism”.

This cost me 2 credits. Here’s what I got:

angram Labs

The passage showed 100% AI but 0% plagiarism. That’s because it was a fictional passage generated.

Now, let’s try testing a passage from one of my articles.

No AI detected, which is absolutely correct. You can also share this generated report in public to gain credibility or download it.

The “AI Phrases Tool” points out all the phrases that are commonly used by AI. I used a passage generated by ChatGPT this time, and here’s what I got.

You can see that Pangram Labs has clearly highlighted the phrases most likely to be used by AI content generators or LLMs.

Pangram Labs also lets you compare texts side by side to spot similar phrases. For instance, I used a passage from one of my articles and asked ChatGPT to enhance it. Now, let’s compare the two. This cost me 1 credit.

This can be really useful if you’re confused about finding specific terms inside your long essays or research papers, and to check whether all the relevant keywords have been added or not.

Pangram Labs also has a Chrome extension and can be integrated with Google Classroom and Canvas.

Pangram Labs

What I also like about this tool is the detailed blogs mentioned on the dashboard. These blogs can help you understand how things work and give a perception of AI detection.

Pricing

5. Detecting-AI

Detecting-AI is a hub of tools required for content creation and analysis. It claims to identify AI-generated text by ChatGPT, Gemini, Jasper, Claude, and other similar models.

Let’s test its AI Detector and other tools.

How to detect AI text using Detecting AI

Here’s how to leverage this wonderful AI Detecting tool:

1. Go to Detecting-AI.com

2. You’ll see the AI Detector tool right at the top of the homepage.

The best thing about this tool is that you can detect AI without signing in and for free.

Now let’s test if this free tool is really worth it. Later, we’ll explore its paid version as well.

I asked ChatGPT, which utilizes generative artificial intelligence, to write a short and human-like article for me:

Let’s check whether Detecting-AI can tell if this article is AI-generated or not.

You can just paste the text or upload the file in .txt, .doc, .docx, or PDF format. I copied the text from ChatGPT and pasted it into the blank space.

Note that you can upload up to 5000 characters and also change the model version from V1 to V2.

Now tap on “Detect AI”.

AI text detection results

Here are the results:

The free version marked this text as 95.2% AI generated — pretty accurate.

Apart from English, Detecting-AI supports many languages like French, Dutch, Russian, German, Portuguese, Spanish, and Arabic, using natural language processing capabilities for efficient detection.

Now let’s try to humanize this AI-written content.

Oh snap! For the free version, we can humanize up to 125 words at once.

Let’s add the first two paragraphs and see the results.

Sounds more human. Let me copy and paste the humanized text again in the AI detector for comparison with a large language model.

And this is what I got.

59.8% written by AI! It shows that this text was likely written by AI, which is true.

This free version passed my tests, and the results are pretty good so far.

Again, let’s paste this humanized text on GPTZero.

Great! It shows “Possible AI paraphrasing detected”. I am quite happy with the results of GPTZero.

It’s time to test Detecting-AI with actual human-written content. I am pasting one of my articles. FYI, it’s 100% human-generated.

Oops! This time it failed. It showed the text as 72.1% AI-written.

I purchased Detecting-AI‘s monthly plan to check the credibility of AI Detector and other tools.

If you want to purchase a plan, you can go to ‘Pricing’ at top of the homepage, select your desired plan, and click on ‘Get Started’. Then you can sign in using Gmail and make the payment.

Now let’s see how well AI Detector works in the paid version, especially with any new models.

I will paste an AI-generated text first (from ChatGPT).

You can select different tools to analyse your text, like AI Detecting, Readability, Plagiarism, and more.

Click on ‘Run Selected Scans’ and here we go.

The Analysis Result shows potentially AI (67%).

In the right panel, you can see the analysis results of your selected tools, such as Readability and Plagiarism, by clicking on different icons.

Let’s try its Humanizer tool and check the results again.

Tap on the Humanize Text in AI Content Analysis.

Now, click on Check For AI. Let’s see what it says.

Likely human-written with a 24% score. Nice!

I’d like to use a paragraph from one of my articles (100% human-written) and see if it works.

Well, not so satisfactory. It marked the text as 63% AI. This seems to be a pretty common problem in all AI detectors. A lot of human-written text is marked as AI. I wouldn’t worry so much about changing it, as long as it feels authentic to me.

APIs

Detecting-AI has plenty of useful API tools like AI Detector API, AI Humanizer API, and Plagiarism Checker API. Additionally, the AI writing detector feature can enhance your ability to assess the authenticity of content.

Based on your requirement, you can seamlessly integrate any API into your workflow. The AI Detector API can be handy for reviewing academic papers, social media posts, or blogs.

I’ve discussed the pricing for APIs in the later sections.

Other AI tools in the Detecting-AI suite

Detecting-AI provides a bunch of tools to analyse content, including an AI checker.

If you go to the ‘features’ on the homepage, you will find tools like AI Detector, Plagiarism Checker, Fact Checker, AI Humanizer, and Other AI Tools.

But if you want to use Fact Checker or Plagiarism Checker, you’ll need to upgrade your plans.

You’ll get plenty of AI tools to enhance your content and analyse it when you go to Other AI Tools.

Some of the cool tools are:

1. AI Text Detector

2. Sentence Rewriter

3. Plagiarism Detector

4. Paragraph Generator

5. Rewording Tool

6. Paragraph Rewriter

7. Fact Checker

These SEO tools are useful for content creators and those planning to become one.

For a detailed video tutorial of Detecting-AI, you can check out this video guide on YouTube —

Pricing

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If you want to integrate API features, you can purchase individual features or get an All-in-one Bundle.

Based on the words per month, you can select the pricing for AI Detector, AI Humanize, and Plagiarism Checker APIs.

Or, you can get access to all features at a 10% discount in the All-in-one Bundle. You can also select the pricing based on words per month.

Detecting-AI works well in detecting AI-generated content, achieving an industry-low false positive rate. Although I didn’t see much difference in the free and paid version results.

It has several tools to help you in your content creation journey, like Grammar Checker, Podcast Name Generator, Slogan Generator, and many more.

If you’re a student, educator, blogger, researcher, or business owner, Detecting-AI can be helpful for you in many ways.

6. Monica

Monica is an all-in-one AI assistant built to improve your productivity. This tool provides personalized, fast, and free support. Monica makes use of LLMs like OpenAI o3-mini, GPT-4o, and more.

This tool lets you chat, search, and helps you with writing and coding tasks. You can also install the browser extension

Monica

Monica has an in-built writing tool, grammar checker, translator, AI detector, image and video generator, and so much more.

Let’s test out the features one by one, though my primary focus will be on Monica’s AI detector. I’ll start by experimenting with the chat feature.

How to generate text using Monica

If you’ve been using LLMs for a while, you probably know the pain of switching between different models to see which one gives the best results. If you looked at my laptop screen during research, you’d find at least 10 tabs open — ChatGPT, Gemini, Claude.ai, DeepSeek, and whatnot. It’s super frustrating.

But Monica makes it seamless. This tool integrates all the LLMs in one place. I no longer have to keep switching tabs or sign up multiple times just to compare results. I simply select the LLM I want to work with inside Monica and that’s it!

For example, I’m using the same prompt to generate a passage using both Monica‘s in-built LLM and DeepSeek R1.

DeepSeek

You can also compare different models to see which one suits you best. That way, you no longer need to jump between tabs all the time.

Now, I’m going to test the “Write” feature of Monica. You can compose blogs, articles, Twitter posts, emails, and more, just by entering a text prompt. Here’s what I got:

Monica gives you the option to improve the text further using AI. Other than this, the tool has a “Reply” feature that generates responses on your behalf, along with a built-in grammar checker.

How to detect AI text using Monica

Now, I’m going to copy the generated text and paste it into Monica‘s “AI Detector”.

As you can see, Monica‘s AI detector has correctly identified that the text is AI-generated. Now, I’m going to test the humanizer to see how well it performs.

Will it be able to bypass its own AI detector? Let’s find out.

Results

How to generate AI images using Monica

Monica has an image generator tool, which generates images based on a text prompt. You can upscale an image, generate AI ID photos, create 4K wallpapers, remove watermarks, and do so much more.

I’m going for simple image generation based on a text prompt. I can choose multiple models, but I’m choosing ‘Stable Diffusion XL 1.0′. Style — ‘Realistic’, Aspect Ratio — ‘1:1′.

The image generated is really nice, but it didn’t follow my prompt to the tee. I still find this pretty amazing. When I asked ChatGPT to generate an image based on the same prompt, to be honest, I got far better results in terms of following my prompt.

ChatGPT

I’m amazed at the clarity ChatGPT has with the text. Even just a couple of months ago, LLMs used to struggle with generating high-quality text.

Here’s another one generated by Monica in “Anime” style:

Monica‘s video tools let you convert text to video, turn still images into animations, add creative effects, and more. I tested the image-to-video tool, and here’s the result:

This looks so good, right? Could you have ever imagined, even a year ago, that AI tools would become this efficient and accurate? Yes, there’s still room for improvement, like my belly’s looking a bit too rounded, but just think of how much these tools will advance in the next 1–2 years! Will this be good or bad? Only time will tell.

Monica‘s ‘Mermaid’ feature lets you create detailed flow charts from a simple prompt. This tool also has a ‘Live Voice’ feature that automatically detects emotions and needs based on your voice.

I definitely recommend using Monica. It’s a one-stop destination for all your content creation needs. You can do your research, generate content, humanize it, detect AI, generate images and videos with cool effects, and so much more.

Pricing

7. Undetectable AI

Undetectable AI has been ranked as the best AI detector by Forbes.

This tool also offers:

1. AI Humanzier

2. AI Job Application Bot

3. AI Essay Writer

4. AI SEO Writer

5. AI Translator

6. AI Chatbot

7. Human Typer

8. Word Counter

How to detect AI text using Undetectable AI

That’s quite a lot of features. Let’s test these tools out, one by one.

1. Go to Undetectable AI.

2. The homepage will show you the AI Detector tool.

3. Copy-paste your text and click on “Check for AI” or “Humanize” based on your needs.

I’m reusing the article from ChatGPT here and running a basic scan (which is free for up to 30,000 characters).

Here’s what I got:

Undetectable AI

100% human? Well, this isn’t what I expected!

I used the same article as before, and it’s showing “0% AI.”

Let me purchase one of their packages to test out the advanced scan. Once you click on “Undetectable” right next to “Basic” on the screen (just above “CHECK FOR AI” and “HUMANIZE”), you’ll be prompted to sign up and select a plan.

You can use the advanced scan for free once you sign up.

I got the same results again.

Results

How to generate text using Undetectable AI

Next, I tried the AI Essay Writer. You can choose the length of your essay (short, medium, or long), select the academic level (high school, university, or doctorate), pick your language (there are 16 options), and choose your essay type (descriptive, narrative, expository, etc.). They also give you the option to make the essay sound humanized or simply AI-like.

I chose these options:

1. Length: Short

2. Academic Level: University

3. Language: English

4. Essay Type: Narrative

5. Humanize

After typing in my topic, I clicked on “Write My Essay.” For the free plan, you get 250 credits = 250 words.

What I noticed is that the AI Humanizer tool takes a lot of time to work on the free plan. To get quicker results, you’ll need to upgrade to one of their plans.

The AI Job Application Bot creates your resume and cover letters using AI, personalizes your job search, and auto-applies to jobs. It is easily integrable with LinkedIn. Pretty cool, right?

I tested the AI SEO Writer tool of Undetectable AI. You’re asked to fill in some basic information before the article is generated, such as your company website, product, target demographic, etc.

Then you’ll be prompted to choose from a list of SEO keywords and a title related to the theme of your article. You can also choose to add an AI-generated image and select its style.

1. For 1,000+ words, you need 6,000 credits.

2. For 2,000+ words, you need 9,000 credits.

3. For 4,000+ words, you need 12,000 credits.

You can pick an outline, add external links, and also choose your writing style.

Click on “Generate Article,” and you’ll get a nice, SEO-friendly article without having to do much.

The AI Translator tool is pretty cool too. All you have to do is copy-paste the text, select the language, and that’s it! You get your translated text.

You can check for AI and humanize your text while translating. You can also choose the tone of the translated text — Relaxed, Funny, etc.

I used a paragraph from the previously used ChatGPT article, and it shows 100% AI. Well, it worked this time. So, that means their “AI Detector” tool does work. It just doesn’t work on the “AI Detector and Humanizer” page.

Undetectable A

Now, it’s time to try the AI chatbot.

I used an existing prompt, and it gave pretty good information regarding Greek mythology. You can also humanize the answer if you want. That’s cool.

Undetectable AI has a “Human Typer” tool. To use this, you need to install the Chrome extension. Once installed, you can directly integrate the tool with Google Docs. What this tool does is simulate human-like typing, automatically typing out your pre-written content.

Next, I tested out the word counting tool. The results were pretty accurate:

What I liked best about this is how it automatically gives me a report on whether or not the text is AI-generated.

Video tutorial

If you’re wondering how to use Originality.AI, you can check my detailed video tutorial on why Originality.AI is the best AI detector, plagiarsim checker, and fact-checker all in one.

Pricing

8. GPTZero

GPTZero claims to incorporate the latest research in detecting all types of AI LLMs.

This tool doesn’t just stop at AI detection. It can carry out an advanced AI scan, identify the most commonly used AI words, offer a plagiarism checker, authorship verification, and even a source finder.

How to detect AI text using GPTZero

Here’s how to use this tool:

1. Go to GPTZero.

2. You’ll find the AI detector tool right on their homepage.

Well, let’s put this tool to the test, shall we?

I asked ChatGPT to write a nice, human-like passage for me:

Let’s see whether GPTZero can detect if this text is AI-generated or not.

GPTZero also allows you to upload files — PDF, .doc, .docx, .txt, .jpg, .jpeg, .png, .gif, .webp — which is pretty cool. I copied and pasted this text into the AI detection tool space.

Now click on “Scan for AI”.

Results

Pricing

9. Originality.ai

Originality.ai claims to be one of the most accurate AI detectors.

How to detect AI text using Originality AI

1. Go to Originality.ai.

2. You can find the AI detector on the homepage.

3. Copy-paste your text or upload a file.

To upload a file or use a URL, you’ll need to purchase one of their plans. You can use the AI Detector tool for free, but only for up to 300 words.

I re-used the same ChatGPT article (up to 300 words only). Here are the results:

Originality. ai’

Yes, the text is fully-generated by AI, so it’s up to our expectations. Next, let’s try a humanized article this time.

Originality. ai

Even though I used a humanizer this time, the AI content detection tool could detect it pretty easily. You can choose from three options:

1. Lite (Best for students & teachers — free up to 300 words).

2. Multi-language (paid).

3. Turbo (paid).

Next, I tried the “Readability Checker” tool. You can either copy-paste your text, upload a file, or provide a link. Once done, click on “Analyze.”

This tool shows you four ways to analyze your text:

1. Text issues: Average syllables per word, average sentences per paragraph, etc.

2. Text stats: Letter count, word count, total syllables, etc.

3. Text scores: Provides scores based on different parameters.

4. KW density: Displays the keywords used.

Originality.ai‘s “Grammar Checker” fixes your grammatical errors for you (free for up to 2,000 words).

Results

Video tutorial

Pricing

10. Phrasly.AI

Phrasly.AI can convert 100% AI-generated text into human-like text that can even bypass GPTZero. Let’s put this to the test, shall we?

How to detect AI text using Phrasly AI

1. Go to Phrasly.AI.

2. Select your text and paste it into the text box.

3. Click on “Check for AI” to detect the percentage of AI in your content.

4. Click on “Humanize” to make your AI-generated content more human-like.

I’m using a passage generated by Gemini as an example.

Phrasly.AI

Yes, the AI detector tool definitely works. This text is purely AI-generated.

Next, let’s try the “Content Generator” tool. I need to enter a brief outline of my expectations for Phrasly.AI, mention the writing purpose (story, article, etc.), the language, and the word count (minimum 350 words, maximum 500 words).

After entering this information, I click on “Generate Outline.” The tool then provides me with a list of topics to choose from (I can select only two). Once I’ve shortlisted two, I click on “Confirm Topics.” You can also add your own custom topic.

Results

Pricing

Why Do You Need AI Detectors?

AI detectors are tools that help differentiate human-written content from generative AI-generated content. At first, I wasn’t sure how important AI detectors were.

After all, if generative AI can create content, surely it could create tools to spot it, too, right? So, what’s the big deal?

But after trying these detectors myself, I realized just how much of a game-changer they are.

With the way AI technology is advancing, it’s becoming harder to tell what’s human and what’s AI-generated.

On top of that, we can’t forget about deepfake scams, misinformation, and intellectual property violations.

That’s exactly where AI detectors come in.

AI detectors ensure that content creators get the credit they deserve, protect brand integrity, and also make sure academic authenticity is preserved.

How I Tested and Ranked the Best AI Detectors

I focused on a bunch of criteria to make sure my assessment was as nearly perfect as possible.

Accuracy

1. How accurately can the tool differentiate between human and AI-generated content?

2. Can the tool identify subtle patterns that distinguish human from AI?

Speed

1. How quickly can the tool analyze content?

2. Is the tool responsive even with larger files or more complex data?

Usability

1. How user-friendly is the interface?

2. Are there helpful features like tutorials or support?

Supported Formats (text, image, video)

1. Does the tool support multiple types of content?

2. How well does the tool handle each format?

Pricing & Value for Money

1. How affordable is the tool for the value it offers?

2. Is there flexibility in pricing plans?

Tips for Choosing the Right AI Detectors

1. Accuracy: Pick a tool that gets it right most of the time.

2. Clear Explanations: A good detector won’t just say “AI-generated”. It’ll tell you why it thinks so.

3. Up-to-Date: AI writing tools are getting better fast, so make sure you use the latest tool.

4. Choose One That Fits: Pick a tool based on your needs — bulk scans, browser extensions, API access, etc.

AI Detector Extensions & Integrations

AI Detector Extensions & Integrations: Incorporating AI detector extensions enhances workflow efficiency. Utilize the AI detection model Browser Extension for seamless detection within web browsers. Integrate AI detection tools with Google Docs for streamlined content evaluation. By leveraging these integrations, users can seamlessly access detection capabilities within their preferred platforms, ensuring a comprehensive approach to content evaluation. These integrations offer convenience and ease of use, facilitating enhanced AI detection processes across various content formats.

AI Detector Browser Extension

QuillBot is a versatile AI detection tool with advanced features. To detect AI text using QuillBot, input the text and analyze the results for accuracy. QuillBot offers a range of other AI tools and services within its suite. In terms of pricing, QuillBot provides competitive rates for its functionalities. QuillBot proves to be a comprehensive AI detection tool in the market, catering to various needs with its efficient solutions.

Use Google Docs with AI Detection

QuillBot offers a robust AI text detection feature with high accuracy in identifying generated content. Its suite includes other useful AI tools complementing the writing process and detection process. The pricing model is competitive, making it a cost-effective choice for users. When testing QuillBot, the results for AI text detection were impressive, showcasing its efficiency in uncovering plagiarized or AI-generated text. Additionally, the tool provides detailed reports for users to analyze.

I Tested 7 Tools, and Here are the Best AI Detectors of 2025 (Ranked and Reviewed): Final words

The good news? AI is here to stay for the long run.

The bad news? AI is here to stay for the long run.

So, instead of rejecting it altogether, it’s important you make the best use of it. AI won’t replace you. It’ll replace those who don’t know how to deploy it in their daily lives.

But it’s also important to preserve human creativity, and that’s why there’s a growing demand for AI detectors across industries.

So, which tool is the best? It depends on your needs.

1. QuillBot if you want a bunch of cool AI tools like Paraphraser, AI Detector, and AI Humanizer.

2. If you want an AI detector designed for education and authenticity verification, opt for Winston AI. It’s 99.98% accurate and super easy to use.

3. If you want an AI detector with a a Chrome extension that can be integrated with Google Classroom and Canvas, go for Pangram Labs.

4. For detecting AI on academic papers and school assignments, Proofademic seems to be the best option.

5. For AI detector, humanizer, and a bunch of other tools like paraphraser, proofreader, slogan generator, etc., go for Detecting-AI.

6. If you want your AI detector to double as your photo and video editing tool, along with a bunch of other cool features, opt for Monica.

7. If you need an AI detector that has a bunch of extra features like AI Humanzier, AI Job Application Bot, AI Essay Writer, etc., try Undetectable AI.

8. If you want an AI detector with a generous plan, go for GPTZero.

9. If you’re looking for a highly accurate AI and plagiarism detector, use Originality.ai.

10. If you’re looking to humanize AI-generated text for better readability and bypass detectors, use Phrasly.AI.

Start using these tools today to improve your writing while keeping it real and authentically you.

Frequently Asked Questions (FAQs) About AI Detectors

1. What Is an AI Detector?

An AI content detector is a tool that identifies whether a piece of text, image, or content has been generated by artificial intelligence (AI) models like ChatGPT, Gemini, or Bard. These tools analyze patterns, sentence structures, and probability scores to determine AI-generated content.

2. Which Is the Most Accurate AI Detector in 2025?

Based on my testing, Originality.ai and Winston AI are the most accurate AI detectors in 2025. They provide in-depth analysis, highlight AI-generated sections, and offer plagiarism detection.

3. Are AI Detectors 100% Reliable?

No, AI detectors using machine learning are not 100% accurate. Some human-written text may be falsely flagged as AI-generated (false positives), and some AI-generated content may bypass detection (false negatives). Accuracy varies based on the detector and its algorithm.

4. Can AI Detectors Be Tricked or Bypassed?

Yes, AI-generated text can be humanized using tools like Undetectable AI. These tools modify the text to make it seem more human-written, helping it bypass detection.

5. What Is the Best Free AI Detector?

For free AI detection, the best options include:

1. GPTZero (Limited free scans)

2. Winston AI (14-day free trial)

3. Undetectable AI (Basic free plan)

For full AI detection capabilities, most tools require a paid plan.

6. Do AI Detectors Work on Images and Videos?

Some AI detectors, like AI Detector, offer image analysis to determine if an image is AI-generated. Detecting AI-generated videos is still in early development.

7. Can AI Detectors Identify Plagiarism?

Not all AI detectors check for plagiarism, but Originality.ai and GPTZero offer both AI detection and plagiarism scanning, making them great choices for writers and educators.

8. Who Uses AI Detectors?

AI detectors are widely used by:

1. Educators & Universities — To check for AI-generated assignments.

2. Writers & Bloggers — To ensure their content is original.

3. SEO Experts — To maintain high-quality, human-written content.

4. Businesses — To prevent AI-generated misinformation.

9. What’s the Future of AI Detection?

As AI writing tools improve, AI detectors must evolve to stay ahead. Expect better accuracy, deepfake detection, and real-time AI verification tools in the coming years.

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This article was updated on September 23rd, 2025 to include one new tool, and make edits to include new features of some already-mentioned tools.