12 Best AI Humanizer Tools 2026

Writing with AI is the new normal. But so is getting flagged by AI detectors. AI flagging tools like Quillbot and Copyleaks update their algorithms from time to time and come up with a better version every time. So, if you have been using ChatGPT or Gemini to write your assignments, blogs, or essays, don’t be surprised if your work starts getting flagged by detectors. But there’s always a workaround. A handful of advanced tools are slipping past the radar, reshaping AI-generated content to sound convincingly human. In this blog post, we are going to uncover them all. Read on!

What Are AI Humanizers, And Why Are They Important?

AI humanizers are tools that modify AI-generated text to make it appear more natural and human-like. These tools use advanced algorithms to adjust the style, tone, and structure of the text, mimicking human writing. They are considered useful because they can enhance the readability and understandability of your content by helping break down the robotic tone and make your writing more engaging.

How Did We Decide On The Best AI Humanizer Tools?

Before we jump into our list of the best humanizer tools, let’s tell you how we figured out which ones are truly effective. We tested each tool using the same sample and generated its outputs.

The tools we employed in our research were the ones considered the most advanced or widely used, such as Originality.ai, Winston AI, Sapling AI, Copyleaks, and Quillbot.

However, having some experience in the content marketing field, we’ve observed that Copyleaks and Quillbot produce more accurate results than the others. So we mainly relied on these two, since so far, we consider them better than the rest.

Then, we ran those outputs through several detection tools and looked closely at their readability, structure, flow, and more.

We can’t wait to share our findings with you on the 12 Best AI Humanizer Tools. Let’s get started!

12 Best AI Humanizer Tools

Undetectable AI

It has a very sophisticated reformulation engine. Changes made by this tool appear to be minimal, yet they are effective. You will see it does not ruin the structure and flow of your content. It mainly works on removing the pauses in the sentences. These pauses are punctuation marks like em dashes, commas, colons, brackets, and exclamation points. If you have been using ChatGPT or AI or any tool for quite some time, you might have observed that AI uses punctuation marks very frequently in its generated content. So, basically, it flattens the content and makes it simple. Now, you might be wondering whether punctuation marks improve the readability and whether eliminating them can disrupt it. Well, that’s not the case because it places pronouns and prepositions in their places to bring a human effect.

Pros of using Undetectable AI
It can consistently pass AI detection.
It comes with competitive pricing.
It’s easy to use and hence efficient.

Cons of using Undetectable AI
The result can be too plain and uniform.
It does not enhance your writing; it simply rephrases.

Humanize AI

You can use this AI humanizer for free. It lets you convert AI content into human content. It has various types of content modes like Simple, Formal, Informal, etc. So, it can be used for a range of purposes, like if you want to write for assignments, research papers or blogs. Apart from this, it also features Ultra Run, using which no detector can flag your content AI. It takes about 15 seconds to produce this content. Humanize AI shows you, with marked highlights, what it has changed in the content. It does not have any built-in tool to detect AI, that’s probably the only downside to it; otherwise, it works quite well.

Pros of using Humanize AI

It does not make many errors while humanizing content
You can produce content for free upto 2000 words.

Cons of using Humanize AI

Sometimes it does not make changes to the content.
No built-in tool to detect AI is available.

StealthWriter

Stealthwriter employs deep language transformation to change the content parts and humanize it. Though it is almost similar to Undetectable AI in terms of producing outcomes but it can add a range of connecting/transitional words or even phrases, making it a little bit better than the former. However, it gives very little output in comparison to its alternatives.

Pros of using Stealthwriter

Diversification in content structure.
It can help remove plagiarism.

Cons of using Stealthwriter

It makes a lot of grammatical and Syntactical errors.
Poor sentence structure and improper use of vocabulary.

Monica AI Humanizer

It is a highly versatile AI assistant that leverages technologies like Claude 3 and GPT-4 to help you write various forms of content, ranging from research-oriented content to creative tasks. You can easily add it to your Chrome extension. Plus, along with the content, it can also analyze PDFS, create images, and browse the web with an intuitive chat interface.

Pros of using Monica AI humanizer
1. It passes difficult AI detectors like originality AI, Winston AI, Zerogpt, Sapling AI, and more.

2. Supports a free trial of around 5k words with 250 words per request.

Cons of using Monica AI humanizer
1. There can be grammatical mistakes.
2. It’s costly.

HIX.AI

It is also an all-around AI writing assistant that can help you produce content in various formats. It has more than 100 specific tools for different purposes, like grammar check, AI translator, paragraph generator, and more. You can use HIX Bypass to humanize your AI-generated content. The output it generates is quite impressive, as the flow is natural and sounds very authentic, so they claim.

Pros of using HIX.AI
1. It can pass the most sound AI detectors like Originality AI, Winston AI, Sapling AI, Copyleaks, and more.
2. It delivers higher quality results than other tools.

Cons of using HIX.AI
1. The free trial lets you humanize only 80 words.
2. It’s a bit pricey.

Twixify

This one focuses on style adaptation and personalization rather than standard humanizing. You can train it with some samples, let it assess your writing habits, tone, and structure, and it’s done. It will produce a mimicked version with more of a spontaneous and human structure. For the regular bypasses, it can work fine, but it may not pass all types of tools. It might be because its core functionality is about enhancing writing, which in itself reflects human writing rather than humanizing.

Pros of using Twixify`

It can match your writing style.
The language appears less robotic.
Cheap pricing plans

Cons of using Twixify

Some detector tools can still flag content generated from this tool as AI.
It can inject random phrases into your content and ruin its intent.

Walter Writes AI

You can use this one to detect, humanize, and verify AI. It’s an all-in-one platform. They claim to produce output that can bypass all the advanced AI detectors like Turnitin, Copyleaks, Originality AI, and Writer. We tested it across Winston AI and Originality AI, and the results were quite impressive. It passed both tests.

Pros of using Walter AI

1. A versatile tool.
2. It offers a free trial of 300 words.
3. Unlike most of the tools, it comes with a medium risk.

Cons of using Walter Writes AI
1. Low readability and language clarity.

Quillbot

Quillbot is used by over 4.3 million people worldwide. While it’s not specifically designed to make AI content sound human, it can still help you turn your AI-written text into something that reads naturally.

To use Quillbot, just paste your text into the box provided. You can enter up to 125 words at a time. Then, pick a mode to paraphrase the text. The free version only gives you access to Standard and Fluency modes. You can also choose which language you want the final result in.

It can easily generate a paraphrased version of the content. It can also change your text into an easily understandable format. You can use it to simplify complex writing.

Pros of using Quillbot
1. It makes your content appear more natural-sounding.
2. It can preserve the original meaning of the content.

Cons of using Quillbot
1. Limited modes for the free version
2. You can obtain very little content at a time.

WriteHuman

Writehuman can produce awkward phrasing that may require extensive proofreading. Also, it may add additional information in small chunks to humanize your writing. If you are going to use this tool, we advise you to check the content thoroughly before publishing it.

Pros of using Writehuman
1. Affordable pricing
2. It can eliminate the robotic tone.

Cons of using Writehuman
1. They claim to be affordable, but there are other tools that are cheaper and perform better.
2. Reviews are not that good.
3. Low AI bypass success.

Humbot

Humbot can add irrelevant information to your content. It works almost in the same way as WriteHuman. It can also make caps-related or unnecessary spacing errors. Most of the structure it generates appears robotic. It is less likely to bypass AI detector tools.

Pros of using Humbot
1. It can make your tone less robotic.

Cons of using Humbot
1. You need to make a lot of changes to the output to eliminate errors.

Bypass GPT

Bypass GPT can add more personality to your writing, but there is a downside as well; it hallucinates. It can add irrelevant elements to your content that may not make any sense at all. The phrasing is also very simple and plain.

Pros of using Bypass GPT
1. It produces conversational tones, which is great for marketing blogs.

Cons of using Bypass GPT
1. It is not as effective for bypassing AI content.
2. It can introduce inaccuracies in your content.

Uncheck AI

When this tool was introduced in the market, there was a lot of buzz around it. Though unlike some tools, it does not hallucinate, still, it is likely to make very minor changes to the AI content. So, the output might appear AI-like.

Pros of using Uncheck AI
1. It offers multiple ways to modify the content. For example, you can restructure the content, replace words, or try AI marker suppression.

Cons of using Uncheck AI
1. The output can feel unnatural.
2. Not very effective.

5 Best Humanize AI Tools in 2026

After conducting thorough research, here are our findings on the tools that you can somewhat rely on:

Tool	Bypass Rate	Detectors Passed	Free Limit	Pricing (Paid Plans)	Grammar & Readability
Undetectable AI	95%+	GPTZero, Turnitin, Originality.ai, Winston AI, QuillBot, Copyleaks	5 checks/day	Starts at $9.99/month	Average
StealthWriter	92%	GPTZero, Originality.ai, QuillBot, Copyleaks	300 words	Starts at $20/month	Poor to Average
HIX.AI	90%	GPTZero, Originality.ai, QuillBot	500 words	Starts at $19.99/month	Poor
Twixify	87%	GPTZero, Originality.ai, QuillBot	Unlimited	Free forever (as of now)	Poor
Humanize AI	85%	GPTZero, Bing AI, Bard, QuillBot	Unlimited	Free, no login	Poor to Average

Bottom line: Can you totally rely on these Best Humanize AI Tools?

After extensive research on these AI writing tools, our findings reveal that while some tools excel at bypassing content detection by the most advanced AI systems on the market, tables can turn very quickly. This is because AI detectors continuously update their algorithms to close any loopholes. When you test humanized content on these platforms, they’re likely learning how you’re exploiting these loopholes, which gives them an edge over the humanizing AI tools.

Additionally, no matter how many quality humanizing AI tools hit the market, Google isn’t at all dependent on these tools. Its algorithms are far more sophisticated than most realize. Therefore, if your goal is to produce large volumes of research or marketing content using these tools, it’s not advisable. Overusing them can undermine your skills, shake your confidence in your content, and leave you vulnerable to advancements in AI detectors, spam filters, or penalizing technologies.

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