Top 9 Best Undetectable AI Writer [Test & Results]

AI content is blooming at lightning speed. As you might know, Google says “Yes” to it as long as it’s practical and valuable to users. That said, while you use a tool, you always want to make the outputs sound as natural as possible.

Not to mention human practices that further enhance originality, choosing a reliable AI writing tool somehow helps you achieve high-quality content. This article will show you the best undetectable AI writers to facilitate your content creation. Let’s explore how each performs!

9 Best Undetectable AI Writers That Anti-AI Detector Tools (Test & Results)

Originality AI and Undetectable AI will assist us in checking the efficiency of these AI writers. They both excel at flagging AI content and receive positive feedback from customers.

Let’s do a small test first!

We asked ChatGPT to generate a couple of passages:

Then, we let the two detectors check the content’s originality. The results are predictable (shown below).

Well, we’re well-equipped. Let’s dive in!

1. Undetectable AI

Undetectable AI ranks at the top of our list thanks to its exceptional AI writing feature, which is signified by its name. This tool is proud to produce any type of content. That’s why its users vary, covering content writers to students and researchers.

One cool thing about Undetectable AI is that it also shines in AI detection capability. With this 2-in-1 tool, you can expect high-quality pieces of content for your projects.

To test the capabilities of Undetectable.AI, TechDictionary used a paragraph created by GPT-4:

Let’s check the tested process below:

First of all, create a paragraph from ChatGPT-4

Paste that paragraph into the Undetectable AI working window to humanize it:

The Undetectable AI detector indicates that its humanized content can bypass most AI detection systems. To ensure the accuracy of these results, we input the findings into a second AI detector. For this, we used ZeroChatGPT and Content of Scale.

What did you see? So impressive results, right? The Undetectable AI tool can humanize AI-generated content, and the result can bypass more than one AI detector. What does this mean? This means that the Undetectable AI humanize feature can beat many AI detectors and perform the content as a human-touch outcome.

Key features:

• Humanize content: Refine your text to make it sound like a human writing
• AI detection: A comprehensive 8-in-1 AI detection functionality incorporating popular tools like OpenAI, Crossplag, Copyleaks, ZeroGPT
• Quick turnaround: Receive the results within 30 seconds
• Usability: Check various content types, such as blog posts, product descriptions, and academic papers

PROS	CONS
✅ User-friendly interface ✅ Effective AI content humanization ✅ Quick turnaround time ✅ Comprehensive AI detection ✅ Multi-language support	❌ The text editor could be improved ❌ Flagged AI content is not highlighted

Pricing:

• Free plan: Checking up to 15,000 characters and Humanizing up to 250 words

• Paid plans: Starting at $14.99/month

Maybe You Are Interested: iMyFone ChatArt Reviews: Your Best AI Writing in 2025?

2. Stealth Writer

This tool is another excellent solution if you’re looking to generate texts swiftly for your content creation or SEO optimization. What sets Stealth Writer apart is the offer of two AI models—GPT-3.5 and GPT-4—to cater to any user’s needs.

Does StealthWriter work well?

The text of the prompt we will give to ChatGPT:

“Write me an article on the importance of showing off your individuality in how you dress.

The article should be at least 1,000 words and should talk about the importance of individuality in society, the power of embracing yourself for who you are, and understanding that self-confidence and having your views and style an attractive trait, along with any other things you feel should be included in the content.

Please include a title, a short key takeaways section after the introduction, and an array of H2 and H3s where necessary.

Finish with a definitive conclusion, promoting the “Did I Mention” brand.

This clothing brand promotes owning your opinions and achievements and wearing them as a badge of honor. They offer a range of collections like “Did I Mention I’m Vegan,” “Did I Mention I Ran a Marathon,” “Did I Mention I Love the Gym”

They have a new range coming out: the “Did I Mention Imma Do Me” for individuals.

1000 words minimum”

We will recreate content from Chat GPT by StealthWriter and test on the following content testing tools:

GPTZero: 0% AI & 100% Human-written

ContenAtScale: 0% AI & 100% Human-written

CopyLeaks: 0% AI & 100% Human-written

StealthWriter also gives us other incredible results. This rewording tool can bypass all three AI detectors with 100% human-written. So impressive!

Key features:

• Dual outputs: Receive two versions of text for each of your input
• Built-in AI detection bypass: Produce content that is less likely to be flagged as AI-generated
• SEO optimization: Naturally include keywords in your content to make it rank better.

PROS	CONS
✅ Flexible output options ✅ Coherent and well-formed content writing ✅ Plagiarism-free content ✅ Easy to use	❌ Limited customization options ❌ Output quality might vary

Pricing:

• Free plan: Up to 300 words per input

• Paid plans: Starting at $20/month

3. QuillBot

QuillBot Paraphrasing Tool

Quillbot-paraphrasing-tool

If you ask a student or content writer to tell the first paraphraser that pops into their head, QuillBot might be mentioned the most. Born with comprehensive paraphrasing features, QuillBot has helped millions of users find the right words to express their ideas and content. Beyond paraphrasing, this platform can help you check grammar, detect plagiarism, summarize content, and more.

We take a text from ChatGPT-4 and rephrase it using QuillBot’s various paraphrasing modes. The outcome is as follows:

We tested to see if GPTzero detects QuillBot – Standard Mode

Can GPTzero Detect Quillbot In Formal Mode

Can GPTzero Detect Quillbot In Academic Mode?

QuillBot Creative Mode can bypass GPTzero

According to our tests, GPTZero only detected 5% of the material that had been reworded by the Creative mode of QuillBot. Great, isn’t it? As a result, QuillBot’s inventive word choice can occasionally outperform GPTzero’s detection algorithms.

Key features:

• Paraphrase: Access its ten different modes to achieve your desired tone and style
• Grammar checker: This tool will highlight your grammatical errors and offer corrections
• Plagiarism checker: Scan texts to identify any plagiarized content
• Summarizer: Paste your long articles or papers and see their short versions in a couple of seconds
• Citation generators: Cite the resources in any style that you prefer (e.g., APA, MLA, and Chicago)

PROS	CONS
✅ Extensive paraphrasing tool ✅ A wide range of other features ✅ Extensions for Chrom, Word, MacOS ✅ User-friendly interface ✅ Multiple language support	❌ Limited free checkers ❌ AI writing could be added

Pricing:

• Free plan: Limited paraphrasing and other features

• Paid plans: Starting at $4.17/month

4. Humbot

Humbot AI Humanization Tool

Humbot-AI-humanization-tool

The next name on our list of the best undetectable AI writers is Humbot. Its AI content feature works by tweaking the structure and vocabulary of text to give it a new look and bypass AI detectors. On its site, Humbot claims it can humanize text to make it 100% undetectable. Curious? Let’s do a quick experiment!

As usual, we’ll generate a text block using ChatGPT. Here’s the result:

Text Written By ChatGPT

text-written-by-ChatGPT

Then, we let Humbot humanize the text:

Humbot Humanizing Text

Humbot-humanizing-text

This time, we use Originality AI as a detector. Eager to know the result? As indicated by our test, Originality AI is 99% sure that the text is written by humans.

Humbot Humanized Texts Bypass Originality AI

Humbot-humanized-texts-bypass-Originality-AI

Amazing, isn’t it? We had a quick review of the humanized text and realized that while it might sound original, there are several mistakes in spelling, grammar, and expressions. It means that personal editing is still necessary.

As you’re interested in Humbot, keep reading to know its key features!

Key features:

• AI humanizer: Humanize AI content with three different modes: Quick, Enhanced, and Advanced
• AI detection: With the same text box, you can check the likelihood of AI in your input

PROS	CONS
✅ Simple to use ✅ Quick generation ✅ Text humanization with a high originality score ✅ AI detection available	❌Limited word input in the free version ❌ Spelling and grammatical mistakes

Pricing:

• Free plan: Up to 300 free words

• Paid plans: Starting at $7.99/month

5. Bypass AI

Bypass AI is another cutting-edge tool in the field. It’s said to beat top AI content checkers such as Turnitin and Originality AI. Well, let’s see!

We used the exact ChatGPT-generated text as above to let Bypass AI humanize it first.

Text Rewritten By BypassAI

text-rewritten-by-BypassAI

This time, Originality AI also indicates that the content is original. In general, this text sounds more natural than the one generated by Humbot.

BypassAI Conversed Texts Bypass AI Detector

BypassAI-conversed-texts-bypass-AI-detector

Key features:

• Text humanization: Choose to improve your content in three levels: Simple, Standard, and Enhanced
• Diverse conversion options: Humanize your content in a style you prefer, such as General writing, Academic writing, Report, etc
• Built-in AI checker: Check the “human score” of your content

PROS	CONS
✅ Natural, human-like content ✅ Content context is maintained ✅ Fast conversion ✅ User-friendly interface ✅ Comprehensive language support	❌ Limited free word check

Pricing:

• Free plan: Up to 100 words input

• Paid plans: Starting at $9.99/month

6. HideMyAI

HideMyAI Rewriting Tool

HideMyAI-rewriting-tool

Like Bypass AI, HideMyAI allows you to choose a type of writing (e.g., general writing, blog post, or essay) to keep the essence of your content alive. Besides English, you can humanize your Spanish, Russian, or French text. Curious about how it performs? We tested its transformed text against Originality AI, like the above tools.

Text Humanized By HideMyAI

text-humanized-by-HideMyAI

As a result, it’s still flagged as human-written content, yet with a slightly lower rate than the previous ones, with an originality score of 95%.

The Result Of Checking HideMyAI’s Rewritten Text

the-result-of-checking-HideMyAI-rewritten-text

Key features:

• Human-like text conversion: Transform your text in different levels, such as Professional, Undergraduate, or PhD
• SEO optimization: Enhance the rephrased content further, help it rank higher on Google

PROS	CONS
✅ High-quality results ✅ Ability to converse content in bulk ✅ Simple interface	❌ Limited language options ❌ Slow response sometimes

Pricing:

• Free plan: Limited features

• Paid plans: Starting at $8.25/month

7. HIX Bypass

HIX Bypass uses natural language processing technologies to make content produced by ChatGPT, Bard, and GPT-4 more human-written. This platform also ensures that its conversed text is plagiarism-free. Besides humanizing content, you can use HIX Bypass to check whether it beats AI detectors.

We also experimented with this tool to see whether Originality AI catches it.

HIX Bypass Humanizing Text

HIX-Bypass-humanizing-text

The result is nearly perfect – 98%. However, we’ve spotted some problems here. First, the rewritten text is quite lengthy, which negatively impacts readability. Second, some sentences are quite complicated in meaning. Thus, if you choose this tool, you’ll need to spend much time reviewing the text.

The Result Of Checking HIX Bypass’s Rewritten Text

the-result-of-checking-HIXBypass-rewritten-text

Key features:

• Content transformation: Deliver new content which can bypass detectors
• AI detection: Paste your text to see if it can beat AI detectors like Turnitin. Hugging Face, Content at Scale.
• Integrated plagiarism: Ensure your outputs are unique

PROS	CONS
✅ Advanced AI humanization technology ✅ Quick conversion process ✅ 50+ languages support ✅ Plagiarism and AI detector check	❌ Results might be lengthy ❌ Higher cost compared to others

Pricing:

• Free plan: Limited use

• Paid plans: Starting at $14.99/month

8. BypassGPT

BypassGPT aims to help students, bloggers, and freelancers worldwide generate human-like content. The platform claims to deliver unique and plagiarism-free outputs and bypass any AI detector, including leading ones like Turnitin, Winston AI, or Originality AI. Let’s examine this statement!

We got the transformed text by BypassGPT as below:

Text Conversed By BypassGPT

text-conversed-by-BypassGPT

Unfortunately, the result is not as good as the platform claims.

The Result Of Checking BypassGPT’s Humanized Text

the-result-of-checking-BypassGPT-humanized-text

Key features:

• Content humanization: There will be alterations in word choice, sentence structure, and writing style in three modes (Fast, Enhanced, and Creative)
• Plagiarism remover: Make your content one-of-a-kind
• Essay generator: Create natural-sounding essays that never get caught

PROS	CONS
✅ Quick text conversion ✅ SEO enhancement is added ✅ Straightforward interface ✅ 50+ languages support	❌ Detector bypassing fails sometimes

Pricing:

• Free plan: Up to 125 words per check

• Paid plans: Starting at $12/month

9. Smodin

Smodin AI Writing Platform

Smodin-AI-writing-platform

To be honest, we’ve heard of Smodin for the first time. While researching, we found that this platform captures us with its modern interface and large user base of students, teachers, and creatives. Like previous tools, Smodin is designed to make content appear more human and less detectable by AI detectors.

Key features:

• AI writing: Generate any type of content (essay, research, article) by telling Smodin the title, keyword, and your desired paragraph
• Rewriting content: Modify sentence structures and synonyms while preserving the original intent
• AI grader: Receive grades and instant feedback for your content

PROS	CONS
✅ Wide range of features to refresh content ✅ Extensive voice and language options ✅ Broad language support ✅ Real-time reply and support	❌ Limited free offers

Pricing:

• Free plan: For rewriting only

• Paid plans: Starting at $12/month

Name	“Likely original” score by Originality AI
Undetectable AI	100%
StealthWriter AI	100%
QuillBot	95%
Humbot	99%
Bypass AI	100%
HideMyAI	95%
HiX Bypass	98%
BypassGPT	51%

As the results above show, which undetectable AI tool do you want to choose?

To Wrap Up

Still find it challenging to make a choice? Then, Techdictionary will narrow the list further, presenting the three most effective tools: Undetectable AI, QuillBot, and Stealth Writer.

Again, while these best undetectable AI writers do a great job rephrasing your content or delivering new ones from scratch, your human touches are necessary to increase originality.