👋 Hi! Let's Talk About Your AI Problem

You're here because:

• Your ChatGPT essay got flagged. Again.
• Your boss said your report "sounds like a robot wrote it." (Spoiler: It did.)
• You're tired of paying for tools that promise "undetectable AI" but… don't.

I get it. I've been there. That's why I spent 14 days testing AI Humanizers — not just reading features but actually using them.. Here's everything I learned (and which tools are worth your time).

🚀 My Top Picks for Busy Readers

Need to humanize AI text fast? Here's my top 2 (full reviews below):

👉 StealthGPT

👉 WriteHuman

🔥 Only 2 AI Humanizers Passed Every Test (Compared Side-by-Side)👇

👋 Quick Heads-Up!

StealthGPT and WriteHuman worked best for me after testing 16 tools — but no AI humanizer is perfect.

Here's my advice:

👉 Try their free trials first (StealthGPT / WriteHuman).

👉 Test your results with Free AI Detectors:

• Originality AI Lite (Free scan up to 750 words)
• Winston AI (Free 2,000 words/ Free trial up to 7 days)
• GPTZero (Free basic check up to 5000 characters and a 14-day free trial)

👉 Only buy if it works for your content.

These tools aren't magic bullets, but they're the closest I've found. If they fit your needs? Awesome. If not? You can bail for free.

You've got this. Test, tweak, and trust your gut. ✌️

Trust me — you'll want to see why the other 14 AI Humanizers failed below. It's brutal. Here's a sneak peek 👇

🔍 Quick Note Before We Dive In… Full transparency: Some links in this post are affiliate links, which means I may earn a small commission if you buy through them — at no extra cost to you.

📖 What's in This Guide?

· What Are AI Humanizers? · How I Tested (No Shortcuts!) · The Winners: AI Humanizers That Actually Work (90%+ Scores) · 1. StealthGPT AI · 2. WriteHuman AI · The Losers: 14 AI Humanizers That Failed (Under 90%) · 1. Monica AI Humanizer · 2. HIX.AI · 3. Twixify · 4. Walter Writes AI · 5. SemiHuman AI Humanizer · 6. Smodin AI Humanizer · 7. Ryne AI · 8. Humanize AI Text · 9. Undetectable AI Humanizer · 10. Bypass AI · 11. Phrasly AI · 12. StealthWriter · 13. GPTinf · 14. Surfer SEO AI Humanizer · Frequently Asked Questions (FAQs) · My Final Thoughts

🤖 What Are AI Humanizers?

AI humanizers rewrite AI-generated text to make it undetectable by tools like Winston AI or GPTZero. They:

• Replace robotic phrases ("utilize" → "use").
• Add typos and contractions (AI text is too perfect).
• Make it sound like a human wrote it.

Who Should Use Them?

• 🎓 Students: Submit essays without your professor's AI radar going off.
• 📝 Writers: Publish AI blogs without Google penalizing you.
• 📱 Social Media Managers: Post AI-generated captions without sounding like a bot.
• 🌍 Non-Native Speakers: Polish awkward translations into natural English.
• 💼 Professionals: Share reports without your boss asking, "Did ChatGPT write this?"

🔬 How I Tested (No Shortcuts!)

Step 1: I Created a "Killer" Sample

Why I Chose "Nutrition Science"

I picked this topic because:

• 🥑 Jargon Overload: Terms like "nutrient absorption" and "metabolic pathways" are detector bait — AI checkers flag them as robotic.
• 🔍 Hard to Simplify: Tools must translate complex terms like "dietary guidelines" into "official food rules" without losing scientific nuance.

How I Generated Different Samples

Goal 👉 Test tools with Different Free Trial Word Limits (80, 100, 200, 250, 300 words).

My ChatGPT Prompt

"Write a [X]-word paragraph about nutrition science. Use terms like 'nutrient absorption,' 'metabolism,' and 'dietary guidelines.' Avoid contractions and keep the tone formal." (I Replaced [X] with 80, 100, 150, 200, 250, or 300.)

Will the AI Detector flag the text as AI-generated? Absolutely!

When I scanned this ChatGPT-generated text in Winston AI Detector, it scored a 0% human — proving it's easily flagged as 100% AI. This makes it the perfect "killer sample" to test!

Step 2: How I Tested Each Tool (No Cheating!)

1- Used Free Trial Limits

I pasted a sample matching each AI humanizer tool's word cap (e.g., 300 words for StealthGPT AI).

2- Clicked "Humanize" Without Editing On My Side!

I let the tool work without manual tweaks.

3- Ran Samples Through 4 Different AI Detectors

I ran the humanized text through 4 AI Detectors: 🛡️ Originality AI Turbo 3.0.1 (industry gold standard) 🕵️ Winston AI (catches subtle tells) 🚨 ZeroGPT (hyper-sensitive to ChatGPT patterns) 🔬 Sapling AI (expert at spotting robotic flow)

🔍 Step 3: My Grading System (No Math Degree Required)

I scored every tool out of 100% using four simple factors. Here's what matters most 👇

1. AI Detector Pass Rate (60% of the score)

The Big Question 👉 Can this tool bypass all the latest AI Detectors?

How it works:

• I ran the humanized text through Four Popular AI Detectors: Originality AI, Winston AI, ZeroGPT AI, and Sapling AI.
• Each detector gave me an AI Probability Score (e.g., "15% chance this is AI").
• I averaged the 4 scores to get one number. If this number is <10%, then this AI Humanizer is good to go!

2. Quality of the Output (25% of the score)

The Big Question 👉 Does the output sound like a human wrote it… or a malfunctioning robot?

✅ Grammar Check (tested via Grammarly): I checked for mistakes in the rewritten text — if there are 5 or fewer in the entire sample, it passes the test! More than that, it starts feeling like a robot trying too hard.

✅ Meaning & Understandability: Does the humanized text keep the original meaning intact and sound like something a real person would write?

3. Multilingual Support (10% of the score)

The Big Question 👉 How many languages does the AI Humanizer support? Does it work beyond basic English?

4. Free Trial Flexibility (5% of the score)

The Big Question 👉 Can you test this AI Humanizer properly for free before paying?

Each tool's final score is a mix of its ability to pybass AI detectors, humanize the text to make it sound natural, support multiple languages, and offer a usable free trial. Here's my hands-on experience with each tool. 👇

🏆 The Winners: AI Humanizers That Actually Work (90%+ Scores)

After testing 16 tools, only 2 passed my strict grading system. Here's how they performed.

1. StealthGPT AI 👉 Score: 100% 🥇

StealthGPT turns AI-generated text into undetectable, human-sounding content. It rewrites robotic phrases with natural flow, crafts SEO-friendly blogs, and extracts insights from PDFs using its chat feature. With stealth modes that bypass Turnitin and GPTZero, plus support for 100+ languages, it's built for students, marketers, and developers. No complex setups — just intuitive tools for polished results. In a sea of lazy paraphrasing bots, StealthGPT prioritizes authentic, human-like writing.

How to use StealthGPT AI

To start using the tool, go to their Website and click the "Get Started Now" button.

You will be asked to sign up, and after signing up, you will be redirected to your dashboard. Now scroll down, and you'll find the "AI Humanizer" Card. Click on it to start humanizing your text!

I pasted my ChatGPT-generated 300-word text in the "ByPass Tool" Editor on the left-hand side. It took less than 15 seconds to generate the humanized text in the "Output Panel" so it was pretty fast. Also, the output was very easy to read and understand since StealthGPT removed most of the jargon and unnecessary stuff in the AI-generated paragraph.

Note 👉 you have a limit of one request as a free user that resets every 7 days. Also, the word cap is 350 words per request for the AI Humanizer.

Here's my result:

Now, I'm going to show you whether that humanized text was able to bypass AI detection or not!

Putting It to the Test: Does StealthGPT Bypass AI Detectors?

Test 1: Originality AI (Turbo 3.0.1) 👉 1% AI Probability 🟢

Originality AI gave me a 99% Confidence Score that it was Likely Original. It was 99% certain that the text was human-written. This means that the StealthGPT AI Humanizer did an outstanding job.

Test 2: Winston AI 👉 2% AI Probability 🟢

Winston AI gave me a Human Score of 98%. It was 98% certain that the text was human-written. This means that the StealthGPT AI Humanizer did an outstanding job.

Test 3: ZeroGPT 👉 18.85% AI Probability 🟢

ZeroGPT AI gave me an AI Probability Score of 18.85%. It was 81% certain that the text was human-written. This means that the StealthGPT AI Humanizer did a good job.

Test 4: Sapling AI 👉 0% AI Probability 🟢

Sapling AI gave me an AI Probability Score of 0%. It was 100% certain that the text was human-written. This means that the StealthGPT AI Humanizer did an outstanding job.

Bonus Test: GPTZero 👉 2% AI Probability 🟢

As a Bonus Test, I also tested the humanized text in GPTZero AI Detector. GPTZero gave me an AI Probability Score of only 2%. It was 98% certain that the text was human-written. This means that the StealthGPT AI Humanizer did an outstanding job.

StealthGPT Outsmarted 2025 AI Detectors 🥇 — Here's How It Dodged Every Algorithm (5.46% Avg) 🏆

Is the Humanized Text Good?

The text had a total of only 2 Grammar Mistakes, according to Grammarly, which was impressive! Also, the text was quite readable and understandable, didn't lose the original intent at all, and sounded natural and human!

StealthGPT's output quality blew me away — it felt way more natural than anything else I tested; the quality is just Superb!!

Score → 25/25 points (15/15 for grammar + 10/10 for natural human tone).

Does StealthGPT AI support multiple Languages?

Supported Languages: StealthGPT AI supports every single language in the World — 100+ languages, including all major languages and even obscure regional languages!

Score → 10/10 points (supports 100+ languages 🤩🥳).

Free Trial Limits: Can You Test Properly?

1. Free Trial Limit: 350 words/request; request resets every 7 days!
2. Tested: Pasted 300-word essay → Processed fully.

Score → 5/5 points (plenty of room to test properly).

🕵️ Is StealthGPT AI Humanizer Worth It? 👉 Final Score 100%

See For Yourself 👉 Sign Up For StealthGPT For Free Now 🚀

What I loved ❤️ about StealthGPT

Here's why it's my go-to for undetectable, human-like content:

1. 🤖 Humanize & Evade AI Detection Restructures sentences to mirror natural human writing styles (no awkward typos or unevenness). Evades Turnitin, GPTZero, Originality AI, and others.
2. 🔍 AI Checker Scans your text and gives an AI detection score — peace of mind before hitting "submit."
3. 🚀 Stealth Writer Your Swiss Army knife for content: Polish essays, craft snappy social posts, or optimize SEO blogs — all with natural flow.
4. 🌍 Multi-Language Support Humanizes text in 100+ languages — Spanish essays, Japanese blogs, German reports — all sound local.
5. 📄 Chat with PDF Ask questions, summarize, or pull quotes from PDFs — like ChatGPT for your documents.
6. 📸 Photo to Answers Snap a worksheet pic and get instant answers — homework panic solved.
7. 🎓 Study Simulator Generates quizzes, study guides, and feedback. Bye-bye, all-nighters.
8. 🧩 Chrome Extension Humanize any website's text with one click, auto-solve quizzes, and stealthify content directly in Chrome, Edge, or Brave.
9. 🔌 API Integration Developers, plug stealth magic into your apps. Custom workflows are unlocked.
10. 📱 iOS App Now Live! StealthGPT on iPhone — essays, quizzes, stealth mode, anywhere.

👉 Try it once, and you'll wonder how you survived without it. 😉

StealthGPT Pricing 👇

• Free User: 350 words/request; request resets every 7 days
• Essential: $24.99/month (Unlimited Words, English Language Only)
• Pro: $34.99/month (Unlimited Words/month, 100+ languages)
• Business: $49.99/month (Unlimited Words/month, Extra SEO Writer)
• Enterprise: $249.99/month(Unlimited Everything)

See For Yourself 👉 Sign up For Free today 🚀

2. WriteHuman AI 👉 Score: 93% 🥈

WriteHuman AI helps you craft authentic, undetectable content by turning robotic AI text into natural-sounding drafts. It preserves your original intent while refining structure and tone, avoiding awkward phrasing, and ensuring readability. Designed to bypass detectors like Originality AI and Winston AI, it's ideal for students polishing essays, bloggers creating casual posts, or anyone needing quick, reliable humanization in 10+ languages.

How to use WriteHuman AI

To start using the tool, go to their Website and click the "Sign Up" button at the top right corner to get up to 3 requests. After signing up, you will be redirected to this dashboard, where you have a credit of 200 words per request as a free user or 1350 characters for each request.

I pasted my ChatGPT-generated 150-word text in the editor and clicked the "Write Human" button.

By clicking the "Customize" button, you can choose from 8 tones available for humanizing the AI text including: Standard, Professional, Academic, SEO/Blog, Casual, Creative, Scientific, and Technical. However, I did not choose any of the available tones, and I continued without any customization.

Here's my result:

Now, I'm going to show you whether that humanized text was able to bypass AI detection or not!

Putting It to the Test: Does WriteHuman Bypass AI Detectors?

After humanizing the AI text, I ran it through four detectors to see if it passed as "human." Here's what happened:

Test 1: Originality AI (Turbo 3.0.1) 👉 1% AI Probability 🟢

Originality AI gave me a 99% Confidence Score that it was Likely Original. It was 99% certain that the text was human-written. This means that WriteHuman AI Humanizer did an outstanding job.

Test 2: Winston AI 👉 1% AI Probability 🟢

Winston AI gave me a Human Score of 99%. It was 99% certain that the text was human-written. This means that WriteHuman AI Humanizer did an outstanding job.

Test 3: ZeroGPT 👉 18.06% AI Probability 🟢

ZeroGPT AI gave me an AI Probability Score of 18%. It was 82% certain that the text was human-written. This means that WriteHuman AI Humanizer did a good job.

Test 4: Sapling AI 👉 16.3% AI Probability 🟢

Sapling AI gave me an AI Probability Score of 16%. It was 84% certain that the text was human-written. This means that WriteHuman AI Humanizer did a good job.

Bonus Test: GPTZero 👉 7% AI Probability 🟢

As a Bonus Test, I also tested the humanized text in GPTZero AI Detector. GPTZero gave me an AI Probability Score of only 7%. It was 93% certain that the text was human-written. This means that WriteHuman AI Humanizer did an outstanding job.

✅ WriteHuman AI Humanizer: Passed All Detectors (9.09% Average)

Is the Humanized Text Good?

The text had a total of only 5 Grammar Mistakes, according to Grammarly, which was good! Also, the text was readable and understandable and didn't lose the original intent, but it still had a slightly robotic tone!

Score → 20/25 points (15/15 for grammar + 5/10 for good readability but slightly robotic tone).

Does WriteHuman support multiple Languages?

Supported Languages: WriteHuman supports multiple languages, including but not limited to English, Spanish, French, German, Chinese, Japanese, and more.

Score → 10/10 points (supports 10+ languages).

Free Trial Limits: Can You Test Properly?

1. Free Trial Limit: 200 words per request, 3 requests.
2. Tested: Pasted 150-word essay → Processed fully.

Score → 3/5 points (not enough room for testing).

🕵️ Is WriteHuman AI Humanizer Worth It? 👉 Final Score 93%

👉 Sign Up For WriteHuman For Free Now 🚀

✨ Core Features

1. ✍️ AI Humanizer Turns robotic AI text into natural, human-like content by refining tone, structure, and flow — no awkward phrases or "uncanny valley" vibes.
2. 🔍 Built-in AI Detector Scans your text for AI patterns. If flagged, tweak and retry until it's undetectable.
3. 🛡️ Undetectable AI Creation Bypasses detectors like Originality AI and Winston AI to keep your content under the radar.
4. 🌍 Multi-Language Support Works in 10+ languages (English, Spanish, French, German, Chinese, Japanese, etc.) while preserving cultural nuances.
5. 🔒 Privacy Assurance Processes content securely — no data is stored or shared.

WriteHuman Pricing 👇

• Free: 200 words/request, 3 requests.
• Basic: $19/month (600 words/request, 80 requests/ month)
• Pro: $29/month (1200 words/request, 200 requests/ month)
• Ultra: $79/month (3000 words/request, unlimited requests/ month)

👉 See For Yourself 👉 Sign Up For WriteHuman For Free Now 🚀

💀 The Losers: 14 Tools That Failed (Under 90%)

1. Monica AI Humanizer 👉 Score: 75%

Monica AI is a versatile AI assistant powered by advanced models like GPT-4 and Claude 3, designed to supercharge productivity across writing, research, and creative tasks. Seamlessly integrated as a Chrome extension or desktop app, it helps generate content, create images, analyze PDFs, and even browse the web — all through an intuitive chat interface.

How to use Monica AI Humanizer

To start using the tool, go to the Website and hover over the "Products" section at the top menu. From the drop-down menu, select "AI Text Humanizer" under the "Writing Tools" category, as shown below.

You'll be directed to the Free AI Text Humanizer, as shown below. You will get 5000 words credit as a free user. You'll be asked to sign up first to be able to use the humanizer.

After signing up, I pasted my ChatGPT-generated 250-word text in the Editor and clicked the "Humanize" button. You get only 250 words per request. Here's my result:

Now, I'm going to show you whether that humanized text was able to bypass AI detection or not!

Putting It to the Test: Does Monica AI Humanizer Bypass AI Detectors?

After humanizing the AI text, I ran it through four detectors to see if it passed as "human." Here's what happened:

Test 1: Originality AI (Turbo 3.0.1) 👉 0% AI Probability 🟢

Originality AI gave me a 100% Confidence Score that it was Likely Original. It was 100% certain that the text was human-written. This means that Monica AI Humanizer did an outstanding job.

Test 2: Winston AI 👉 1% AI Probability 🟢

Winston AI gave me a Human Score of 99%. It was 99% certain that the text was human-written. This means that Monica AI Humanizer did an outstanding job.

Test 3: ZeroGPT 👉 0% AI Probability 🟢

ZeroGPT AI gave me an AI Probability Score of 0%. It was 100% certain that the text was human-written. This means that Monica AI Humanizer did an outstanding job.

Test 4: Sapling AI 👉 0% AI Probability 🟢

Sapling AI gave me an AI Probability Score of 0%. It was 100% certain that the text was human-written. This means that Monica AI Humanizer did an outstanding job.

Monica AI Humanizer: 0% AI on Originality, GPTZero & Sapling… 1% on Winston AI (As Close to Perfect as It Gets) ✅

Is the Humanized Text Good?

The text had a total of 19 Grammar Mistakes, according to Grammarly, which was quite a lot. It was A Disaster! Also, the text was unreadable, incomprehensible, and had this weird structure!

Score → 0/25 points (0/15 for grammar + 0/10 for being unreadable, incomprehensible, and just weird).

Does Monica AI Humanizer support multiple Languages?

Supported Languages: Monica AI supports multiple languages, including but not limited to English, French, German, Chinese, Japanese, Korean, and Spanish. Also offers translation features for working across different languages

Score → 10/10 points (supports 10+ languages 🤩🥳).

Free Trial Limits: Can You Test Properly?

1. Free Trial Limit: 5000 words, 250 words per request.
2. Tested: Pasted 250-word essay → Processed fully.

Score → 5/5 points (very ample testing room).

🕵️ Is Monica AI Humanizer Worth It? 👉 Final Score 75%

2. HIX.AI 👉 Score: 70%

HIX.AI is an all-in-one AI writing assistant designed to streamline content creation across various formats. It offers over 120 specialized tools, including a paragraph generator, article rewriter, grammar checker, and AI translator, catering to both general and creative writing needs. One of its standout features is HIX Bypass, which humanizes AI-generated content to make it undetectable by AI detection tools, ensuring that the content reads naturally and authentically, or so they claim!

How to use HIX.AI

To start using the tool, go to the Website and click on the "Try For Free" button at the top right corner. You will be asked to sign up.

After signing up, you'll be redirected to this dashboard. Now, scroll down until you see Hix Bypass on the left-hand side menu, click on it, and you'll be redirected to this editor where you can humanize your text.

I pasted my ChatGPT-generated 80-word text in the "Content" Editor on the left-hand side. You have a maximum of 80 words as a free trial user.

There are 4 modes available for humanizing the text: Fast, Balanced, Aggressive, and Latest. I set the mode to "Latest" because HIX claims that Latest humanizes the text in a way that beats advanced AI detectors like Originality 3.0 and Turnitin. Here's my result:

Now, I'm going to show you whether that humanized text was able to bypass AI detection or not!

Putting It to the Test: Does HIX.AI Bypass AI Detectors?

After humanizing the AI text, I ran it through four detectors to see if it passed as "human." Here's what happened:

Test 1: Originality AI (Turbo 3.0.1) 👉 1% AI Probability 🟢

Originality AI gave me a 99% Confidence Score that it was Likely Original. It was 99% certain that the text was human-written. This means that HIX.AI did an excellent job humanizing the text.

Test 2: Winston AI 👉 0% AI Probability 🟢

Winston AI gave me a Human Score of 100%. It was 100% certain that the text was human-written. This means that HIX.AI did an excellent job humanizing the text.

Test 3: ZeroGPT 👉 0% AI Probability 🟢

ZeroGPT AI gave me an AI Probability Score of 0%. It was 100% certain that the text was human-written. This means that HIX.AI did an excellent job humanizing the text.

Test 4: Sapling AI 👉 0.1% AI Probability 🟢

Sapling AI gave me an AI Probability Score of 0.1%. This means that it saw this text as written by a human with a confidence level of 99.9%, which was an outstanding result!

HIX.AI: Undetectable Across All 4 AI Detectors (1% Max AI Probability) 🏆

Is the Humanized Text Good?

The text had a total of 8 Grammar Mistakes in just an 80-word sample, according to Grammarly, which was Totally Flawed! Also, the text was completely unreadable and incomprehensible and sounded overly robotic.

Score → 0/25 points (0/15 for grammar + 0/10 for overly robotic tone).

Does HIX.AI support multiple Languages?

Supported Languages: HIX.AI bypasser supports over 50 languages.

Score → 10/10 points (supports 50+ languages 🤩🥳).

Free Trial Limits: Can You Test Properly?

1. Free Trial Limit: 80 words.
2. Tested: Pasted 80-word paragraph → Processed fully.

Score → 0/5 points (not enough for testing a tweet).

🕵️ Is HIX.AI Worth It? 👉 Final Score 70%

3. Twixify 👉 Score: 56%

Twixify is an AI rewriting tool designed to convert AI-generated text into natural, human-like content while preserving individual writing styles. It analyzes user-specific linguistic patterns to ensure outputs mirror personal tone and phrasing, evading detection by systems like Turnitin and GPTZero.

How to use Twixify

To start using the tool, go to their Website and click the "Try it Free" button. You will be asked to sign up, and after signing up, you will get 150 words for free to try their humanizer. You will be redirected to this dashboard, where you can choose between basic mode and custom mode. Basic Mode rewrites AI-generated text (or any text for that matter) to bypass AI detection. However, custom mode lets you write about anything in your own tone and writing style.

In custom mode, you provide Twixify with a sample of your writing to use as an inspiration, and then you can provide your AI-generated content, and now it will generate an output based on your personal tone and style. Custom mode requires a subscription.

I pasted my ChatGPT-generated 150-word text in the editor and clicked the "Humanize" button. There were no additional settings to choose from, so I couldn't customize the reading level, tone, or purpose. Here's my result:

Now, I'm going to show you whether that humanized text was able to bypass AI detection or not!

Putting It to the Test: Does Twixify Bypass AI Detectors?

After humanizing the AI text, I ran it through four detectors to see if it passed as "human." Here's what happened:

Test 1: Originality AI (Turbo 3.0.1) 👉 0% AI Probability 🟢

Originality AI gave me a 100% Confidence Score that it was Likely Original. It was 100% certain that the text was human-written. This means that Twixify did an excellent job humanizing the text.

Test 2: Winston AI 👉 1% AI Probability 🟢

Winston AI gave me a Human Score of 99%. This means that it saw this text as written by a human with a confidence level of 99% and that Twixify did an excellent job humanizing the text.

Test 3: ZeroGPT 👉 52% AI Probability 🔴

ZeroGPT AI gave me an AI Probability Score of 52%. This means that it saw this text as written by a human with a confidence level of only 48%, which was a very poor result.

Test 4: Sapling AI 👉 0.2% AI Probability 🟢

Sapling AI gave me an AI Probability Score of 0.2%. This means that it saw this text as written by a human with a confidence level of 99.8%, which was an outstanding result!

Twixify Scores 0% AI on Originality & Sapling… Yet ZeroGPT Spots It Instantly 🤖

Is the Humanized Text Good?

The text had Zero Grammar Mistakes according to Grammarly, which was Flawless! Also, the text was readable and sounded more human, but it could use some editing.

Score → 20/25 points (15/15 for grammar + 5/10 for readable but could use some editing).

Does Twixify support multiple Languages?

Supported Languages → It is not clear; their website doesn't mention how many languages they support.

Score → 3/10 points (Unknown).

Free Trial Limits: Can You Test Properly?

1. Free Trial Limit: 150 Words, 3 requests/Month.
2. Tested: Pasted 150-word paragraph → Processed fully.

Score → 3/5 points (Too restrictive for essays/blogs, should offer 200–300 words).

🕵️ Is Twixify Worth It? 👉 Final Score 56%

4. Walter Writes AI 👉 Score: 48%

Walter Writes AI is an AI tool that detects, humanizes, and verifies AI all in one platform. It claims that it can generate humanized text that achieves 99% on advanced AI detectors like ZeroGPT, CopyLeaks, Originality AI, Writer, Turnitin, GPTZero, and ContetAtsSale.

How to use Walter Writes AI

To start using the tool, head over to their website and click the "Start Free 300-Word Trial" button. You will be asked to sign up, and after signing up, you will be redirected to the editor, where you now have "a credit of 300 words" in your free plan, and you can test the efficiency of this AI Humanizer.

So I clicked the "Humanize AI Content" card, and I pasted my ChatGPT-generated 300-word text in the editor on the left-hand side. In the "Advanced Options" section, you can see that the readability level was already set to "High School" and the Purpose to "General".

If you want to select another readability level like "University" for example, you will need a subscription. The same goes for choosing another "Purpose" level other than general. Also, The "Detection ByPass Level" was already set to "Simple", I couldn't choose the "Standard" or the "Advanced" options because these 2 options require a subscription.

Quick note 👉R The &quo;Simple Mode" includes light edits and minimal changes. They claim that it can bypass most AI detectors, but this means that it "May Fail Our Test" and you may need a subscription for better results!

Then, I clicked the "Humanize and Scan" button, and it took around 50 seconds for the result to be ready. Here's an example of what my result looked like!

Now, I'm going to show you whether that humanized text was able to bypass AI detection or not!

Putting It to the Test: Does Walter Writes AI Bypass AI Detectors?

After humanizing the AI text, I ran it through four detectors to see if it passed as "human." Here's what happened:

Test 1: Originality AI (Turbo 3.0.1) 👉 3% AI Probability 🟢

Originality AI gave me a 97% Confidence Score that it was Likely Original. It was 100% certain that the text was human-written. This means that Walter Writes AI did an excellent job humanizing the text.

Test 2: Winston AI 👉 15% AI Probability 🟡

Winston AI gave me a Human Score of 85%. It was 85% certain that the text was human-written. This means that Walter Writes AI did a decent job humanizing the text.

Test 3: ZeroGPT 👉 36% AI Probability 🔴

ZeroGPT AI gave me an AI Probability Score of roughly 36%. This means that it saw this text as written by a human with a confidence level of 64%, which was an average result!

Test 4: Sapling AI 👉 0.1% AI Probability 🟢

Sapling AI gave me an AI Probability Score of 0.1%. This means that it saw this text as written by a human with a confidence level of 99.9%, which was an outstanding result!

Walter Writes AI Narrowly Passes AI Detection (Avg. 13.5%)… But Not All Tools Are Fooled

Is the Humanized Text Good?

The text had a total of 9 Grammar Mistakes according to Grammarly, and it was also unreadable and sounded too robotic.

Score → 10/25 points (10/15 for grammar + 0/10 for robotic tone).

Does Walter Writes AI support multiple Languages?

Supported Languages → Supports multiple languages, including English, Spanish, French, and German. On its website, it states that it supports a wide range of languages, but it's not clear how many languages exactly!

Score → 3/10 points (supports 4 languages that we know of).

Free Trial Limits: Can You Test Properly?

1. Free Trial Limit: 300 words.
2. Tested: Pasted 300-word essay → Processed fully.

Score → 5/5 points (ample testing room).

🕵️ Is Walter Writes AI Worth It? 👉 Final Score 48%

5. SemiHuman AI Humanizer 👉 Score: 40%

Semihuman claims to detect and convert AI-generated text into plagiarism-free, undetectable text with a 100% human score. They claim that you'll be able to bypass Turnitin, ZeroGPT, GPTZero, Copyleaks, and Scribbr.

How to use SemiHuman AI Humanizer

To start using the tool, head over to the Website and click on the "Sign Up For Free" button at the top right corner. You will be asked to sign up, and after signing up, you'll be redirected to this dashboard, where you'll have a 250-word limit as a free trial user and can test the AI Humanizer. I pasted my ChatGPT-generated 250-word text in the Editor. There are 3 modes available for humanizing the AI text: Less Bypass & More Readable, Balanced, and Better Bypass & Less Readable.

I set the mode to "Balanced. Then I clicked the "Humanize" button, and here's my result:

Now, I'm going to show you whether that humanized text was able to bypass AI detection or not!

Putting It to the Test: Does SemiHuman AI Humanizer Bypass AI Detectors?

After humanizing the AI text, I ran it through four detectors to see if it passed as "human." Here's what happened:

Test 1: Originality AI (Turbo 3.0.1) 👉 100% AI Probability 🔴

Originality AI gave me a 100% Confidence Score that it was Likely AI. It was 100% certain the text was written by AI and 0% confident it was human-written. SemiHuman AI Humanizer was a Complete Failure.

Test 2: Winston AI 👉 99% AI Probability 🔴

Winston AI gave me a Human Score of 1%. It was 99% certain that the text was written by AI and 1% confident it was human-written. SemiHuman AI Humanizer was a Complete Failure.

Test 3: ZeroGPT 👉 21.48% AI Probability 🔴

ZeroGPT AI gave me an AI Probability Score of 21%. This means that it saw this text as written by a human with a confidence level of 79%, which was an average result!

Test 4: Sapling AI 👉 100% AI Probability 🔴

Sapling AI gave me an AI Probability Score of 100%. It was 100% certain that the text was written by AI and 0% confident it was human-written. SemiHuman AI Humanizer was a Complete Failure.

SemiHuman AI: 100% AI on 3/4 Detectors… ZeroGPT Spots 21% (Still a Fail!) 🚨

Is the Humanized Text Good?

The text had only 2 Grammar Mistakes, according to Grammarly, which was quite good! The text was readable and easy to understand.

Score → 25/25 points (15/15 for grammar + 10/10 for being readable and easy to understand).

Does SemiHuman AI support multiple Languages?

Supported Languages: Semihuman AI Humanizer supports 11 languages.

Score → 10/10 points (supports 10+ languages 🤩🥳).

Free Trial Limits: Can You Test Properly?

1. Free Trial Limit: 250 words.
2. Tested: Pasted 250-word essay → Processed fully.

Score → 5/5 points (ample testing room).

🕵️ Is SemiHuman AI Humanizer Worth It? 👉 Final Score 40%

6. Smodin AI Humanizer 👉 Score: 33%

Smodin AI redefines writing efficiency as an all-in-one, AI-powered multitool designed to craft high-quality content in seconds. It generates text, researches facts, and cites sources flawlessly in over 100 languages — all tailored to your preferred style.

How to use Smodin AI Humanizer

To start using the tool, go to the Website and hover over the left side menu as shown below and select "AI Content Detector".

You'll be redirected to the AI Content Detector page. Now, click on the "Try Recreate" button at the lower right side, as shown below.

You'll be redirected to the "AI Detection Remover" page, which is Smodin's AI Humanizer version. I pasted my ChatGPT-generated 250-word text in the Editor. There were 3 options available for setting the purpose: AI Detection, Experimental, and Uniqueness.

I set the purpose to "Uniqueness" and I clicked the "Humanize" button.

Here's my result:

Now, I'm going to show you whether that humanized text was able to bypass AI detection or not!

Putting It to the Test: Does Smodin AI Humanizer Bypass AI Detectors?

After humanizing the AI text, I ran it through four detectors to see if it passed as "human." Here's what happened:

Test 1: Originality AI (Turbo 3.0.1) 👉 100% AI Probability 🔴

Originality AI gave me a 100% Confidence Score that it was Likely AI. It was 100% certain that the text was AI-generated. This means that Smodin AI Humanizer was a Complete Failure.

Test 2: Winston AI 👉 99% AI Probability 🔴

Winston AI gave me a Human Score of 1%. It was 99% certain that the text was AI-generated. This means that Smodin AI Humanizer was a Complete Failure.

Test 3: ZeroGPT 👉 100% AI Probability 🔴

ZeroGPT AI gave me an AI Probability Score of 100%. It was 100% certain that the text was AI-generated. This means that Smodin AI Humanizer was a Complete Failure.

Test 4: Sapling AI 👉 100% AI Probability 🔴

Sapling AI gave me an AI Probability Score of 100%. It was 100% certain that the text was AI-generated. This means that Smodin AI Humanizer was a Complete Failure.

❌ Smodin AI Humanizer: 100% AI Detection Rate Across All 4 Detectors (Epic Fail)

Is the Humanized Text Good?

The text had a total of 0 Grammar Mistakes, according to Grammarly, which was quite good! The text was readable and understandable, but it had a slightly robotic tone.

Score → 25/25 points (15/15 for grammar + 5/10 for slightly robotic tone).

Does Smodin AI Humanizer support multiple Languages?

Supported Languages: Smodin AI Humanizer supports over 100 languages.

Score → 10/10 points (supports 100+ languages 🤩🥳).

Free Trial Limits: Can You Test Properly?

1. Free Trial Limit: Roughly 134 words/ request or 1000 characters/request, 3 requests/week.
2. Tested: Pasted 100-word essay → Processed fully.

Score → 3/5 points (Limited room for testing).

🕵️ Is Smodin AI Humanizer Worth It? 👉 Final Score 33%

7. Ryne AI 👉 Score: 30%

Ryne AI is a Text Humanizer that takes AI-generated content and rewrites it to sound like it was written by a real person — claiming to help you bypass tools like Turnitin and GPTZero. Ryne AI also packs an Essay Composer for crafting polished, citation-ready essays, a Note Taker for capturing live lectures, and Ryne Chat, a 24/7 study buddy ready to answer questions or brainstorm ideas.

How to use Ryne AI

To start using the tool, head over to their website and click the "Get Started Free" button. You will be asked to create a free account, and after creating one, you will be redirected to this dashboard, where you now have "a credit of 100 coins" to use as a free user, and you can test the efficiency of this AI Humanizer.

So I clicked the "Humanizer" card, and I pasted my ChatGPT-generated 239-word text in the editor on the left-hand side. I set the "Writing Style" to "General", but there are another 6 options you can choose from, including Casual, Formal, Professional, Witty, Sarcastic, and Excited. I also set the "Content Type" to "General", but there are another 6 options you can choose from, including Essay, Article, Letter, Email, Marketing, and Legal.

You have a 250-word-per-request limit, and every word costs you an average of 5 coins. Here's my result:

Now, I'm going to show you whether that humanized text was able to bypass AI detection or not!

Putting It to the Test: Does Ryne AI Bypass AI Detectors?

After humanizing AI text, I ran it through four detectors to see if it passed as "human." Here's what happened:

Test 1: Originality AI (Turbo 3.0.1) 👉 0% AI Probability 🟢

Originality AI gave me a 100% Confidence Score that it was Likely Original. This means that it saw this text as written by a human with a confidence level of 100% and that Ryne AI did an outstanding job humanizing the text.

Test 2: Winston AI 👉 19% AI Probability 🟡

Winston AI gave me a Human Score of 81%. This means that it saw this text as written by a human with a confidence level of 81% and that Ryne AI did a decent job of humanizing the text.

Test 3: ZeroGPT 👉 50.7% AI Probability 🔴

ZeroGPT AI gave me an AI Probability Score of 50%. This means that it saw this text as written by a human with a confidence level of only 50%, which was a poor result

Test 4: Sapling AI 👉 99.8% AI Probability 🔴

Sapling AI gave me an AI Probability Score of 99.8%. This means that it saw this text as written by a human with a confidence level of only 0.2%, which was a Complete Failure!

Ryne AI: Perfectly Human on Originality AI… But Other Detectors Aren't Buying It

Is the Humanized Text Good?

The text had a total of 9 Grammar Mistakes according to Grammarly. The text was readable but sounded too simplistic. While this makes it accessible, it loses the scientific nuance needed for topics like nutrition science.

Score → 15/25 points (10/15 for grammar + 5/10 for readable but overly simplistic ).

Does Ryne AI support multiple Languages?

Supported Languages → supports all languages -107 languages to be exact!

Score → 10/10 points (supports 100+ languages 🤩🥳).

Free Trial Limits: Can You Test Properly?

1. Free Trial Limit: 100 Coins. Every coin → 5 words, 250 words/request.
2. Tested: Pasted 239-word essay → Processed fully.

Score → 5/5 points (ample testing room).

🕵️ Is Ryne AI Worth It? 👉 Final Score 30%

8. Humanize AI Text 👉 Score: 30%

Humanize AI Text claims to humanize AI text with their advanced AI Humanizer, turning AI-generated content into natural, engaging, and human-like writing. They also offer an AI Detector, a Plagiarism Checker, and a Google Chrome Extension.

How to use Humanize AI Text

To start using the tool, head over to their Website and click the "Login" button at the top right corner. You will be asked to sign up and unlock 1000 words for free to try their humanizer!

After signing up, you will get this welcome message showing you that you have unlocked 1000 Words after signing up. Also, you will get 200 Free Words Daily to create human-like content using their humanizer.

Click on the "Start Creating" button, and you'll be redirected to this editor, where you can paste your text.

I pasted my ChatGPT-generated 300-word text in the editor on the left-hand side. I set the "Readability Level" to "University" and the "Purpose" to "Essay". You can choose one of five options in the readibility level, including high school, university, doctorate, journalist, and marketing. As a free user, you can only choose one of 2 options: High School or University, and the other 3 options are for pro users.

As for the purpose, there are 9 options, but as a free user, you can only choose one of 2 options: General or Essay.

Here's my result:

Now, I'm going to show you whether that humanized text was able to bypass AI detection or not!

Putting It to the Test: Does Humanize AI Text Bypass AI Detectors?

After humanizing the AI text, I ran it through four detectors to see if it passed as "human." Here's what happened:

Test 1: Originality AI (Turbo 3.0.1) 👉 100% AI Probability 🔴

Originality AI gave me a 100% Confidence Score that it was Likely AI. This means that it saw this text as generated by AI with a confidence level of 100% and that Humanize AI Text was a Complete Failure.

Test 2: Winston AI 👉 72% AI Probability 🔴

Winston AI gave me a Human Score of 28%. This means that it saw this text as generated by AI with a confidence level of 72% and that Humanize AI Text was a Complete Failure.

Test 3: ZeroGPT 👉 53% AI Probability 🔴

ZeroGPT AI gave me an AI Probability Score of 53%. This means that it saw this text as written by a human with a confidence level of 47%, which was a very poor result.

Test 4: Sapling AI 👉 76.4% AI Probability 🔴

Sapling AI gave me an AI Probability Score of 76.4%. This means that it saw this text as written by a human with a confidence level of only 23.6%, which was a Complete Failure!

Humanize AI Text: Scored 100% AI on Originality… and Made ChatGPT Look More Human 🤦♂️

Is the Humanized Text Good?

The text had a total of only 5 Grammar Mistakes according to Grammarly, which was good. However, the text was unreadable and sounded too robotic.

Score → 15/25 points (15/15 for grammar + 0/10 for robotic tone).

Does Humanize AI Text support multiple Languages?

Supported Languages → Supports 26 languages.

Score → 10/10 points (supports 26 languages).

Free Trial Limits: Can You Test Properly?

1. Free Trial Limit: 1000 Words after signing up + 200 Free Words Daily.
2. Tested: Pasted 300-word essay → Processed fully.

Score → 5/5 points (ample testing room).

🕵️ Is Humanize AI Text Worth It? 👉 Final Score 30%

9. Undetectable AI Humanizer 👉 Score: 30%

Undetectable AI is a platform that transforms AI-generated text into human-like writing. It claims that it will effectively bypass AI detection systems. It has over 15 million users and is featured in prominent publications like Forbes and Business Insider.

How to use Undetectable AI Humanizer

To start using the tool, head over to the Website, paste the AI-generated text that you want to humanize, and click on the "Humanize" button. You will be asked to sign up for a free 3-day trial. You'll need a credit card for this, and you'll have a 250-word limit as a free trial user.

After signing up, you'll be redirected to this dashboard, where you can use the Undetectable AI Humanizer. I pasted my ChatGPT-generated 239-word text in the Editor. You have a maximum of 250 words as a free trial user.

There are 3 modes available for humanizing the text: More Readable, Balanced, and More Human. I set the "Humanization Strength" mode to "More Human" because Undetectable AI claims that the "More Human" mode is for overly aggressive or inconsistent AI detectors. I also set the Readability level to "University" and the Purpose to "General Writing" and then clicked the "Humanize" button.

Here's my result:

Now, I'm going to show you whether that humanized text was able to bypass AI detection or not!

Putting It to the Test: Does Undetectable AI Humanizer Bypass AI Detectors?

After humanizing the AI text, I ran it through four detectors to see if it passed as "human." Here's what happened:

Test 1: Originality AI (Turbo 3.0.1) 👉 1% AI Probability 🟢

Originality AI gave me a 99% Confidence Score that it was Likely Original. This means that it saw this text as written by a human with a confidence level of 99% and that Undetectable AI Humanizer did an excellent job humanizing the text.

Test 2: Winston AI 👉 1% AI Probability 🟢

Winston AI gave me a Human Score of 99%. This means that it saw this text as written by a human with a confidence level of 99% and that Undetectable AI Humanizer did an excellent job humanizing the text.

Test 3: ZeroGPT 👉 93.2% AI Probability 🔴

ZeroGPT AI gave me an AI Probability Score of 93%. It was 93% certain that the text was AI-generated. This means that Undetectable AI Humanizer was a Complete Failure.

Test 4: Sapling AI 👉 100% AI Probability 🔴

Sapling AI gave me an AI Probability Score of 100%. It was 100% certain that the text was AI-generated. This means that Undetectable AI Humanizer was a Complete Failure.

Bonus Test: Undetectable AI Detector 👉 99% AI Probability 🔴 (Their Own Detector!!!)

Undetectable AI Detector (Their Own Detector) gave me an AI Probability Score of 99%. It was 99% certain that the text was AI-generated. This means that Undetectable AI Humanizer was a Complete Failure.

It didn't even bypass their own detector!!

Undetectable AI: Perfect on Originality & Winston AI (1%)… But Fails Spectacularly on ZeroGPT & Sapling (93%+ AI) 🚨

Is the Humanized Text Good?

The text had a total of 10 Grammar Mistakes, according to Grammarly, which may need some editing! The text was readable but slightly robotic.

Score → 15/25 points (10/15 for grammar + 5/10 for slightly robotic tone).

Does Undetectable AI support multiple Languages?

Supported Languages: Undetectable AI supports 55 languages.

Score → 10/10 points (supports 50+ languages 🤩🥳).

Free Trial Limits: Can You Test Properly?

1. Free Trial Limit: 250 words.
2. Tested: Pasted 250-word essay → Processed fully.

Score → 5/5 points (ample room for testing).

🕵️ Is Undetectable AI Humanizer Worth It? 👉 Final Score 30%

10. Bypass AI 👉 Score: 20%

Bypass AI is a tool that humanizes text, making it undetectable by AI detectors. It helps users avoid issues like false positives from AI detectors, removal of ChatGPT watermarks, and potential penalties from search engines for AI-generated content.

How to use Bypass AI Humanizer

To start using the tool, go to the Website and click on the "Start For Free" button at the top right corner. You will be asked to sign up, and you'll have a 100-word limit as a free trial user.

After signing up, you'll be redirected to this dashboard, where you can use the Bypass AI Humanizer. I pasted my ChatGPT-generated 100-word text in the Editor. You have a maximum of 100 words as a free trial user.

There are 3 modes available for humanizing the text: Simple, Standard, and Enhanced. I set the mode to "Enhanced.

I also set the Purpose to "General Writing"; however, there are seven additional options to choose from, as you can see.

Then I clicked the "Humanize" button, and here's my result:

Now, I'm going to show you whether that humanized text was able to bypass AI detection or not!

Putting It to the Test: Does Bypass AI Humanizer Beat AI Detectors?

After humanizing the AI text, I ran it through four detectors to see if it passed as "human." Here's what happened:

Test 1: Originality AI (Turbo 3.0.1) 👉 92% AI Probability 🔴

Originality AI gave me a 92% Confidence Score that it was Likely AI. This means that it saw this text as written by a human with a confidence level of only 8% and that Bypass AI Humanizer was a Complete Failure.

Test 2: Winston AI 👉 0% AI Probability 🟢

Winston AI gave me a Human Score of 100%. This means that it saw this text as written by a human with a confidence level of 100% and that Bypass AI Humanizer did an excellent job humanizing the AI text.

Test 3: ZeroGPT 👉 100% AI Probability 🔴

ZeroGPT AI gave me an AI Probability Score of 100%. This means that it saw this text as written by a human with a confidence level of 0%, which was a Complete Failure.

Test 4: Sapling AI 👉 0% AI Probability 🟢

Sapling AI gave me an AI Probability Score of 0%. This means that it saw this text as written by a human with a confidence level of 100%, which means that Bypass AI Humanizer did an excellent job humanizing the AI text.

Bypass AI: Undetectable on Winston & Sapling (0% AI)… But Blatantly AI on Originality & ZeroGPT (92%+ AI) 🤯

Is the Humanized Text Good?

The text had a total of 7 Grammar Mistakes in just a 100-word sample, according to Grammarly, which was quite a lot! However, the text was readable and easy to understand.

Score → 10/25 points (0/15 for grammar + 10/10 for being readable and easy to understand).

Does Bypass AI support multiple Languages?

Supported Languages: Bypass AI supports 30+ languages.

Score → 10/10 points (supports 30+ languages 🤩🥳).

Free Trial Limits: Can You Test Properly?

1. Free Trial Limit: 100 words.
2. Tested: Pasted 100-word paragraph → Processed fully.

Score → 0/5 points (not enough for testing a tweet).

🕵️ Is Bypass AI Humanizer Worth It? 👉 Final Score 20%

11. Phrasly AI 👉 Score: 18%

Phrasly AI claims to use advanced algorithms to modify AI-generated content, making it undetectable by various AI detectors such as Originality AI, Winston AI, GPTZero, ZeroGPT, and Turnitin.

How to use Phrasly AI

To start using the tool, head over to their website and click the "Get Started — for free" button. You will be asked to sign up, and after signing up, you will be redirected to the dashboard, where you now have "a credit of 300 words" in your free plan, and you can test the efficiency of this AI Humanizer.

You can choose one of the popular tools that Phrasly offers, including AI Humanizer, AI Detector, and Content Generator. Of course, I chose the "AI Humanizer" and pasted my ChatGPT-generated 300-word text in the editor on the left-hand side. I set the "Humanization Strength" to "Aggressive". Here's my result:

The Aggressive mode is the best mode, with the highest bypass rate in the industry, according to Phrasly. With this mode, their system prioritizes showing drafts that have the highest bypass rates, regardless of readability. They recommend using this option for most text, as it's the most effective. If you experience quality issues, you'll need to lower the strength.

Now, I'm going to show you whether that humanized text was able to bypass AI detection or not!

Putting It to the Test: Does Phrasly AI Bypass AI Detectors?

After humanizing the AI text, I ran it through four detectors to see if it passed as "human." Here's what happened:

Test 1: Originality AI (Turbo 3.0.1) 👉 100% AI Probability 🔴

Originality AI gave me a 100% Confidence Score that it was Likely AI. It means that it saw this text as generated by AI with a confidence level of 100% and that Phrasly AI was a Complete Failure.

Test 2: Winston AI 👉 100% AI Probability 🔴

Winston AI gave me a Human Score of 0%. This means that it saw this text as generated by AI with a confidence level of 100% and that Phrasly AI was a Complete Failure.

Test 3: ZeroGPT 👉 100% AI Probability 🔴

ZeroGPT AI gave me an AI Probability Score of 100%. This means that it saw this text as written by a human with a confidence level of 0%, which was a Complete Failure.

Test 4: Sapling AI 👉 72.7% AI Probability 🔴

Sapling AI gave me an AI Probability Score of 72.7%. This means that it saw this text as written by a human with a confidence level of 27.3%, which was a Complete Failure!

Phrasly AI's 'Humanized' Text Scores 100% AI on 3/4 Detectors… and 72.7% on the Fourth 😬

Is the Humanized Text Good?

The text had a total of 10 Grammar Mistakes according to Grammarly. The text was unreadable and sounded too robotic.

Score → 10/25 points (10/15 for grammar + 0/10 for robotic tone).

Does Phrasly AI support multiple Languages?

Supported Languages → Supports multiple languages, including English, Spanish, French, and German. On its website, it states that it supports a wide range of languages, but it's not clear how many languages exactly!

Score → 3/10 points (supports 4 languages that we know of).

Free Trial Limits: Can You Test Properly?

1. Free Trial Limit: 300 Words.
2. Tested: Pasted 300-word essay → Processed fully.

Score → 5/5 points (ample testing room).

🕵️ Is Phrasly AI Worth It? 👉 Final Score 18%

12. StealthWriter 👉 Score: 15%

StealthWriter is an SEO tool that Claims to turn your AI-generated content into human-like writing, ensuring a 100% human score. It claims to bypass AI detectors such as Originality AI, Winston AI, GPTZero, ZeroGPT, and Turnitin, allowing your content to remain undetected and unrestricted.

How to use StealthWriter

To start using the tool, go to their Website and click the "Try For Free" button. After signing up, you will be redirected to this dashboard, where you have a credit of 5000 words daily as a free user.

To start humanizing your text, select "Humanizer" under the "Features" category from the left side menu. I pasted my ChatGPT-generated 300-word text in the editor, and I set the humanization model to Ninja 3.2. Ninja 3.2 is recommended by StealthWriter for bypassing Originality AI, GPTZero, ZeroGPT, Quilbot, and Google. It's supposed to provide the best readability and quality compared to their other Ninja models.

Then, I clicked the "Humanize" button. The result was a humanized text with an AI detection probability of 54%. StealthWriter suggested clicking the "Replace All AI Sentences" button to remove AI, and I did just that. By the way, Stealth Writer provides you with 8 different drafts to choose from.

I kept on clicking the "Replace All AI Sentences" button till I got the result of 0% AI detection probability, as you can see below. That's my final result!

Now, I'm going to show you whether that humanized text was able to bypass AI detection or not!

Putting It to the Test: Does StealthWriter Bypass AI Detectors?

After humanizing the AI text, I ran it through four detectors to see if it passed as "human." Here's what happened:

Test 1: Originality AI (Turbo 3.0.1) 👉 2% AI Probability 🟢

Originality AI gave me a 98% Confidence Score that it was Likely Original. It was 98% certain that the text was human-written. This means that StealthWriter did an outstanding job.

Test 2: Winston AI 👉 77% AI Probability 🔴

Winston AI gave me a Human Score of 23%. It was 77% certain the text was AI-generated. This means that StealthWriter was a complete failure.

Test 3: ZeroGPT 👉 0% AI Probability 🟢

ZeroGPT AI gave me an AI Probability Score of 0%. It was 100% certain the text was human-written. This means that StealthWriter did an outstanding job.

Test 4: Sapling AI 👉 0% AI Probability 🟢

Sapling AI gave me an AI Probability Score of 0%. It was 100% certain that the text was human-written. This means that StealthWriter did an outstanding job.

🚨 StealthWriter AI Humanizer: 3 Detectors Fooled… But Winston AI's 77% Bomb Sinks the Ship

Is the Humanized Text Good?

The text had a total of 14 Grammar Mistakes, according to Grammarly, which was quite a lot! Also, the text was unreadable and incomprehensible and had an overly robotic tone!

Score → 0/25 points (0/15 for grammar + 0/10 for unreadability and overly robotic tone).

Does Stealth Writer support multiple Languages?

Supported Languages → StealthWriter supports all languages, allowing for versatile content transformation regardless of the language you are working with.

Score → 10/10 points (supports all languages).

Free Trial Limits: Can You Test Properly?

1. Free Trial Limit: 300 words/request, Daily Limit 5000 words.
2. Tested: Pasted 300-word essay → Processed fully.

Score → 5/5 points (ample testing room).

🕵️ Is StealthWriter Worth It? 👉 Final Score 15%

13. GPTinf 👉 Score: 8%

GPTinf is a paraphrasing tool designed to transform AI-generated content into human-like writing, bypassing AI content detectors such as GPTZero. With a user-friendly interface, GPTinf allows users to rephrase text with a single click, claiming a 99% detector bypass rate.

How to use GPTinf

To start using the tool, head over to their Website and click the "Start Free Trial" button. You will be asked to sign up, and after signing up, you will be redirected to this dashboard, where you can humanize your text.

I pasted my ChatGPT-generated 300-word text in the editor and clicked the "Paraphrase" button. There is also the "Advanced Options" section where you can provide GPTinf with keywords or phrases that you wish to keep without changes.

Here's my result:

Now, I'm going to show you whether that humanized text was able to bypass AI detection or not!

Putting It to the Test: Does GPTinf Bypass AI Detectors?

After humanizing the AI text, I ran it through four detectors to see if it passed as "human." Here's what happened:

Test 1: Originality AI (Turbo 3.0.1) 👉 1% AI Probability 🟢

Originality AI gave me a 99% Confidence Score that it was Likely Original. This means that it saw this text as written by a human with a confidence level of 99% and that GPTinf did an excellent job humanizing the text.

Test 2: Winston AI 👉 100% AI Probability 🔴

Winston AI gave me a Human Score of 0%. This means that it saw this text as generated by AI with a confidence level of 100% and that GPTinf was a Complete Failure.

Test 3: ZeroGPT 👉 65% AI Probability 🔴

ZeroGPT AI gave me an AI Probability Score of 65%. This means that it saw this text as written by a human with a confidence level of 35%, which was a very poor result.

Test 4: Sapling AI 👉 93.4% AI Probability 🔴

Sapling AI gave me an AI Probability Score of 93.4%. This means that it saw this text as written by a human with a confidence level of only 6.6%, which was a Complete Failure!

GPTinf: Perfect on Originality AI… But Every Other Tool Sees Right Through It 🤦‍♂️

Is the Humanized Text Good?

The text had a total of 11 Grammar Mistakes according to Grammarly, which was flawed! Also, the text was unreadable and sounded too robotic.

Score → 0/25 points (0/15 for grammar + 0/10 for robotic tone).

Does GPTinf support multiple Languages?

Supported Languages → It is not clear; their website doesn't mention how many languages they support.

Score → 3/10 points (Unknown).

Free Trial Limits: Can You Test Properly?

1. Free Trial Limit: 300 words or more/process.
2. Tested: Pasted 300-word essay → Processed fully.

Score → 5/5 points (ample testing room).

🕵️ Is GPTinf Worth It? 👉 Final Score 8%

14. Surfer SEO AI Humanizer 👉 Score: 5%

Surfer SEO is a data-driven search engine optimization (SEO) tool designed to help users create and optimize content that ranks higher in search results. It offers a variety of tools including a content editor for real-time writing assistance, a content audit tool for evaluating existing content, a topical map for generating relevant topic ideas, and a free AI Humanizer tool.

How to use Surfer SEO AI Humanizer

To start using the tool, head over to the Website and hover over the "Products" section at the top menu. From the drop-down menu, select "AI Humanizer" under the "Free" category, as shown below.

You'll be directed to the Free AI Content Humanizer page, as shown below. If you don't create a Surfer account, you will only get 500 words per month as a free user. However, if you create a Surfer account without a subscription, you'll get 1000 words per month. If you have an active Surfer subscription plan, you will get 50,000 words per month.

I pasted my ChatGPT-generated 300-word text in the Editor and clicked the "Humanize" button. Here's my result:

Now, I'm going to show you whether that humanized text was able to bypass AI detection or not!

Putting It to the Test: Does Surfer SEO AI Humanizer Bypass AI Detectors?

After humanizing the AI text, I ran it through four detectors to see if it passed as "human." Here's what happened:

Test 1: Originality AI (Turbo 3.0.1) 👉 100% AI Probability 🔴

Originality AI gave me a 100% Confidence Score that it was Likely AI. It was 100% certain that the text was generated by AI. This means that Surfer SEO AI Humanizer was a Complete Failure.

Test 2: Winston AI 👉 100% AI Probability 🔴

Winston AI gave me a Human Score of 0%. It was 100% certain that the text was AI-generated. This means that Surfer SEO AI Humanizer was a Complete Failure.

Test 3: ZeroGPT 👉 93% AI Probability 🔴

ZeroGPT AI gave me an AI Probability Score of 93%. It was only 7% certain the text was human-written. This means that Surfer SEO AI Humanizer was a Complete Failure.

Test 4: Sapling AI 👉 0.3% AI Probability 🟢

Sapling AI gave me an AI Probability Score of 0.3%. It was 99.7% certain that the text was human-written. This means that Surfer SEO AI Humanizer did an outstanding job.

Surfer SEO AI Humanizer Failed Massively (100% AI on Originality & Winston AI, 73.4% Avg)

Is the Humanized Text Good?

The text had a total of 15 Grammar Mistakes, according to Grammarly, which was quite a lot! Also, the text was slightly paraphrased, so it still sounded robotic!

Score → 0/25 points (0/15 for grammar + 0/10 for robotic tone).

Does Surfer SEO AI Humanizer support multiple Languages?

Supported Languages: Surfer SEO AI Humanizer supports Only English For Now.

Score → 0/10 points (supports only English).

Free Trial Limits: Can You Test Properly?

1. Free Trial Limit: 500 words per month without a Surfer Account, 1000 words per month with a Surfer Account but no Subscription, 50,000 words per month with an active Surfer Subscription.
2. Tested: Pasted 300-word essay → Processed fully.

Score → 5/5 points (very ample testing room).

🕵️ Is Surfer SEO AI Humanizer Worth It? 👉 Final Score 5%

Frequently Asked Questions (FAQs)

🤔 How Do AI Humanizers Work?

AI humanizers analyze AI-generated text for patterns that detectors can flag — like repetitive phrasing, overly formal syntax, or predictable transitions. They then:

1. Rephrase robotic terms (e.g., simplifying jargon without losing meaning).
2. Vary sentence structure (mixing short, long, and fragmented sentences).
3. Inject human-like quirks (occasional colloquial phrases or intentional grammatical flexibility).

The best tools (like StealthGPT & WriteHuman) focus on rewriting structure, not just swapping words.

🤖 Do AI Humanizers Work?

Honestly? Some do — but it's like playing roulette. Most tools overpromise and underdeliver, turning your text into awkward, robotic gibberish that detectors spot instantly. In my tests, 14 out of 16 tools failed because they just swapped fancy words or added random typos (spoiler: detectors aren't fooled by "teh" instead of "the").

The two that worked — StealthGPT and WriteHuman — succeeded because they don't just paraphrase. They restructure sentences, mimic human quirks (like uneven pacing or casual phrases), and update constantly to stay ahead of detectors.

Bottom line: AI humanizers are hit-or-miss. If you pick the right one (and edit lightly yourself), they can work. If you grab a random tool? You're likely wasting time — and risking getting flagged.

Pro tip: Always test outputs across multiple detectors. Even the best tools aren't magic. ✨

🥊 AI Humanizers vs. Paraphrasing Tools

Paraphrasing tools and AI humanizers might seem similar, but they're fundamentally different.

• Paraphrasing Tools: Swap synonyms (e.g., "utilize" → "use") but retain AI patterns.
• AI Humanizers: Restructure sentences, vary rhythm, and mimic human imperfection.

Example:

• Paraphrased AI: Still has rigid transitions like "Additionally" or "In conclusion."
• Humanized AI: Uses casual transitions ("Here's the thing…") and varied pacing.

Most tools claim to humanize but act like basic paraphrasers.

🔑 How to Make AI Writing Undetectable?

(Ethical note: Avoid academic dishonesty!)

1. Use a top-tier humanizer: StealthGPT or WriteHuman for foundational cleanup.
2. Edit manually:

• Add contractions ("you're" instead of "you are").
• Break grammar rules occasionally (start sentences with "And" or "But").
• Include personal insights ("In my experience…").

3. Test rigorously: Run outputs through detectors like Originality AI, Winston AI or GPTZero .

Pro Tip: Detectors struggle with unique human touches — add a brief anecdote or opinion.

My Final Thoughts

Let's be real: the AI detection arms race is exhausting 😮💨. Tools evolve, detectors adapt, and what worked yesterday might flop tomorrow. But after testing 16 AI humanizers, one thing's clear — quality matters more than hype.

If you take away one thing from this guide, let it be this: Most tools are trash 🗑️… but a rare few (looking at you, StealthGPT and WriteHuman) actually earn their price tag.

The catch? Stay vigilant. What works today might fail next month. I'll keep testing tools, dissecting updates, and sharing no-BS results.

👉 Want to stay ahead of the curve?

Follow me on Medium for deep dives, AI hacks, and unfiltered reviews. No fluff, no BS — just raw truths.

Thanks for reading, and remember: AI might write the words, but humans tell the story ✍️.

P.S. Found this helpful? Clap, share, or drop a comment — I read every one! 💬**