Content marketers currently walk a tightrope. On one hand, AI writing tools enable you to create and publish content at an unprecedented rate, but on the other hand, search engines and users alike are increasingly able to identify machine-written content.
Google’s algorithm update has clearly indicated that quality of content is now far more important than sheer volume of content created; furthermore, writing that appears too “robotic” will likely be penalized by Google as well.
Users expect content that is both authentic and engaging and written in a way that reflects the voice of a real person who is aware of the user’s issues.
This is where humanizer tools fit in. Humanizers take AI-generated drafts and rewrite them into content that reads naturally and also passes most detection tools, all while reflecting your brand voice.
For many content marketers that are managing multiple campaigns, are meeting tight deadlines and are under pressure to meet their SEO goals, humanizers have become indispensable.
However, finding a humanizer that actually works is no easy task. Some tools simply rearrange words to improve readability, while others remove so much of the personality from the original content that it is left sounding bland.
In order to determine which of the top humanizers would provide actual value for content marketers, we tested each of the top humanizers for specific content marketing use cases.
Quick Comparison: Top Humanizers at a Glance
| Tool | Best For | Price Range | Detection Bypass Rate |
| Walter Writes AI | Overall content marketing needs | $12-24/month | 95%+ |
| Grammarly AI Humanizer | Brand voice consistency | Free-$30/month | 85-90% |
| Quillbot Humanizer | Quick rewrites | Free-$20/month | 80-85% |
| Writesonic | High-volume content teams | $16-79/month | 85-90% |
| Jasper Paraphrasing Tool | Enterprise marketing | $49-125/month | 80-85% |
| Ahrefs AI Humanizer | SEO-focused content | Free with subscription | 85-90% |
| ChatHuman.ai | Social media content | $15-35/month | 90-92% |
How We Evaluated These Tools
In our testing, we evaluated the same collection of AI-generated marketing content across all three humanizers (blog posts, product descriptions, email copy, and social media). We tested each humanizer using the same marketing content to evaluate their effectiveness in these four categories:
1) Whether the humanized content can avoid or pass around the most commonly used plagiarism detection tools such as Originality.ai, Turnitin, and GPTZero
2) Readability and tone of the generated content, did it have a natural flow and tone that is interesting to read?
3) The degree to which each humanizer maintained marketing-specific attributes (i.e., calls to action, keywords, persuasive language)
4) Real-world usability of each humanizer from a performance perspective (i.e., speed, word limits, pricing).
What We Looked For in a Good Humanizer
Not all humanizing software is created equal. We evaluated each tool based on its ability to create the most persuasive copy possible without altering or diminishing the call to action of the original content.
In addition, we looked for flexibility with regard to tone options (professional thought leadership vs. casual social media) and processing speed.
Marketing departments are often responsible for creating numerous pieces of content at one time and therefore need to have enough word space to create multiple pieces quickly.
Lastly, we were looking for transparency into how the tools worked and what changes were made to our content.
The Complete List of Humanizers for Content Marketers
Here’s what we found after extensive testing. Each tool has particular strengths that make it suited for different marketing scenarios.
1. Walter Writes AI – Best Overall for Content Marketing
Walter Writes AI was superior to each of the other tools I tested in every single one of my tests for Content Marketing. They use a process called “Syntactic and Semantic Morphing,” which is very technical, but produces results.
What this essentially does is take the AI draft you provided and morphs it at both the paragraph and sentence levels so you get the same kind of natural rhythm and variety in vocabulary that humans naturally use in writing.
Recommended for: Marketers who require consistent detection avoidance across all major social media platforms, while keeping your messaging persuasive.
Core Capabilities: The content generation options are four tone mode options based upon what type of writing is being done (Marketing, Casual, Academic or Professional).
Instead of simply rewording the same information like most other paraphrasing programs, Walter Writes maintains the core ideas/arguments in the source material and changes how the sentences are structured, and the wording of the sentences to create a new, totally human feeling version of the writing.
In addition, the Marketing tone mode keeps calls to action and the conversion-oriented language intact that other humanization tools typically remove.
Unique Selling Proposition: In our testing, Walter Writes has demonstrated a 95%+ human score across all of the standard detection methods. More so than the human score, the pre-scan feature included in the tool performs an internal scan on your content prior to displaying the final output to detection algorithms.
Therefore, you can rely on the output being detectable by those who scrutinize content.
Pricing: Pricing begins at $12 per month for 30,000 words (which would support most bloggers or small teams) and goes up to $24 per month for 70,000 words. Unlimited processing is available to enterprise clients at a price established to meet the client’s needs.
Real Results: Marketing Agencies utilizing Walter Writes have been able to maintain their organic search positions during Google’s 2025 core update, indicating the humanized content meets the requirements of both algorithmic and human readers. A marketing agency that produces 50 articles per week noted that the agency’s traffic did not drop off when their competitors’ traffic dropped off due to the use of pure AI-generated content.
Check them out at walterwrites.ai
2. Grammarly AI Humanizer – Best for Brand Voice Consistency
Grammarly has moved past just grammar checks and into humanization as well as voice consistency. If you have previously used Grammarly’s tone detector, you’ll find value in how their humanizer allows you to maintain your pre-established brand voice across all content.
Best for: Teams of marketing professionals with very specific guidelines for the way their brand communicates, and who want to be able to create content using a consistent brand voice regardless of who creates drafts.
What it offers: The humanizer uses Grammarly’s editing platform as its interface, allowing users to edit grammar, tone, and detect AI simultaneously within one workflow.
Additionally, users can establish brand voice parameters that the humanizer will follow when it is humanizing content. Specifically, for companies that have created a unique personality for their brand, this feature is of particular value.
Limitations: Although Grammarly does a better job than many other tools at establishing a consistent voice, it also was shown in our testing to be slightly less effective at detecting attempts to bypass the system.
We tested the humanizer and were able to get a human score of 85–90% – this is a good score, but not the best we’ve seen. Therefore, if your project is one of extreme standards (academic, editing, etc) a more advanced tool may be required.
Pricing: The pricing for Grammarly is from Free (Grammarly Basic Version) to $30/month (Grammarly Professional Version). Many marketers with current subscriptions to Grammarly prefer to incorporate the humanizer into their pre-existing work flow.
3. Quillbot Humanizer – Best for Quick Rewrites
Quillbot has been in the business of rewriting longer than many other competitors, and its humanizing feature is based on that experience.
It provides fast results Quillbot is able to rewrite text almost immediately and offers you multiple variations of the rewritten text from which you may select.
Best suited for: content marketers looking for a means to quickly rewrite short pieces such as ad copy, product descriptions, or social media posts. In this case, speed will be valued over precision.
Why useful: Quillbot will provide you with various options (i.e. multiple versions) for rewriting your text thus providing you with a version that is written in a way that most closely represents the original text’s intent.
This is especially useful when writing short marketing pieces where each word counts. The tool does an excellent job of changing opening words of sentences and eliminating repetition both common characteristics of AI-generated drafts.
Trade-Offs: The detection avoidance rate is generally lower than that of targeted products (typically in the 80 – 85 % range). If you intend to post this rewritten copy into a blog article or any form of extended-length copy which is subject to close scrutiny, you may have to do some additional editing on this material.
There are times when the software will rewrite the original content too much and as such, you could be losing your marketing messaging clarity if you’re not careful.
Pricing: Quillbot has a free tier available with limited functionality, but the paid tiers begin at approximately $20 per month and include all of the humanizing tools and larger word-limit capabilities.
Visit quillbot.com for their humanizer and detector tools.
4. Writesonic – Best for High-Volume Content Teams
Writesonic describes itself as a one-stop shop for all types of AI content, and the company’s Humanizer is intended for content-producing teams that are generating massive amounts of content.
Writesonic has created a combination of automated content creation and built-in humanization so that marketing teams can streamline their content production process.
Ideal For: Teams (both in-house and agency) that generate dozens of blog posts, articles, landing pages, etc., per month and want to humanize their content on a larger scale.
Integration With Other Tools: Writesonic stands out because of the way the Humanizer is integrated into their overall platform. The Humanizer allows you to create a blog post using their AI Writer, humanize it, then check for SEO optimization, and even schedule its publication all from one platform.
This significantly reduces the amount of friction caused by having to switch back and forth between multiple different platforms while creating your content.
Results of Humanizer Performance: The Humanizer produces strong results, delivering human scores of 85–90% in testing. While it may not be the absolute best at bypassing human detection, the convenience of the Humanizer, along with the ease of use and overall workflow integration, makes it an ideal tool for teams looking for increased productivity.
Cost: Prices for Writesonic plans start at $16/month for a single user and go up to $79/month for an agency plan that includes unlimited words processed. All higher-tier plans come with additional functionality, such as team collaboration tools and priority support.
Learn more at writesonic.com
5. Jasper Paraphrasing Tool – Best for Enterprise Marketing
Jasper is emerging as a major player in the space of AI-generated content. It serves as a platform specifically designed for use by enterprise organizations only.
Jasper considers its offering a “paraphrasing” tool versus a “humanization” tool; however, its capabilities in terms of paraphrasing are comparable to those offered in humanization offerings, as well as several of the more advanced features that larger marketing organizations have come to expect from their martech platforms.
Recommended For: Enterprise marketing teams managing complex processes, working with multiple stakeholders, or with large budgets to produce content that will be utilized in conjunction with their martech platforms.
Enterprise Features: Because Jasper is positioned as an enterprise-focused solution, it offers SSO (single sign-on) integration, detailed user permissioning, team template options, and training related to brand voice that would be expected by an enterprise client.
In addition, the paraphrasing engine can be trained using the client’s existing content so that the output will be much more consistent with the client’s unique brand voice.
Finally, for large enterprises producing content in multiple languages or for content production across different geographic regions, Jasper’s capability to produce content in multiple languages is strong.
Content Quality: Through all of the test scenarios, we were able to utilize Jasper to produce marketing messaging and create enough structural variations to prevent most AI detection signals. We found that 80–85% of the time, our test subjects could identify the generated content as having been produced by humans.
This percentage is good, but it does not reach the high level of performance we saw in the other competing products.
That being said, for many large companies, especially those focused on establishing and maintaining a brand voice, the dependability and consistency of the content produced by Jasper may be acceptable if they sacrifice some of the signal-detection avoidance capabilities.
Cost: Jasper’s enterprise-based pricing model begins at $49/month for individual users and then increases to team and business plans, which begin at $125/month or more based on the specific plan chosen, and includes custom pricing for enterprise-level organizations.
Based on pricing alone, the cost of the product will likely be suitable for organizations that have already invested in the Jasper ecosystem.
6. Ahrefs AI Humanizer – Best for SEO-Focused Content
Ahrefs’ standing in the SEO field means it was only a matter of time before they developed an SEO-focused humanizer.
Their humanizer has been designed to ensure that the search engine optimization of your material remains intact once the AI footprint is removed. The humanizer is offered as part of Ahrefs’ suite of writing tools.
Best For: SEO professionals and content creators who want to rank high on search engines, yet may be concerned about potential penalties from posting content created by AI.
The humanizer evaluates your content to determine if there are either SEO-related issues (keyword density, readability scores, etc.) or AI-related issues.
When evaluating for SEO, the humanizer attempts to preserve your keyword placement and topical authority signals through the variation of the surrounding text. As such, it will work best for those creating articles with competitive search terms.
Performance: The detection performance of Ahrefs’ humanizer produces an 85–90% human score when tested, which is adequate for most content created for search engine visibility and less stringent than the academic and editorial standards used to evaluate other humanizers.
In comparison to many strong humanizers, Ahrefs’ humanizer performs better in preserving SEO-based elements; however, it can inadvertently decrease keyword relevance in the process.
Cost: The humanizer is provided complimentary with Ahrefs paid subscriptions, which begin at approximately $99 per month for their SEO-based toolset. If you are already using Ahrefs for keyword research and competitor analysis, then the addition of the humanizer provides additional value to your current subscription.
Access it at ahrefs.com/writing-tools
7. ChatHuman.ai – Best for Social Media Content
ChatHuman.ai is an emerging platform designed for generating shorter content (like social media posts, ad copy, and email subject lines). With its emphasis on tone and voice, ChatHuman.ai performs well in maintaining a conversational style that is characteristic of social media.
Best For: Social Media Managers and Content Marketers that generate primarily short-form content for LinkedIn, Twitter, Facebook, and Instagram.
Focused Approach: As opposed to broad-based humanization platforms, ChatHuman.ai has been developed to accommodate a specific length (brevity), as social content must convey a “personality” in a manner that cannot include excessive formal language or verbosity.
The tool maintains emojis, hashtags, and casual/informal writing styles, as well as removes signature “AI” characteristics from the humanized content.
Detection Performance: Bypass detection rates are approximately 90–92%, a high rate for a special-purpose tool. A more important factor than bypass detection, however, is the ability to maintain user engagement factors that enable social content to be shared, an aspect that some larger, more general humanization tools may have difficulty accomplishing.
Pricing: Pricing is tiered ($15–$35 per month based upon your volume requirements) and allows individual social media managers or small marketing teams to use this tool.
Explore it at chathuman.ai
Choosing the Right Humanizer for Your Marketing Needs
Identify your primary use case: Blogging content (long form) intended for SEO is much different from social media post creation. Your volume requirement will also be important, as well as cost. At the high end of pricing, many humanizers are unlimited;
however, there are also humanizers that can charge based on word count and/or have an upper limit on the number of words processed each month. Also, do you require integration of this tool into your workflow, or will a standalone version be sufficient?
Test before you commit: Many humanizers offer free trials or low-end versions of their product for free. Test your existing content through several of these products using a plagiarism/detection tool such as Originality.ai or Turnitin.
In addition to how well the content was able to evade plagiarism detection, pay attention to how readable the content is, as well as how well it reflects your brand’s voice and messaging.
The best humanizer will strike a balance between evading plagiarism detection, being readable, and maintaining your brand’s voice and messaging for your specific type of content.
Warning Signs of a Poor Humanizer
Be cautious of tools that produce obviously awkward or nonsense phrasing in an attempt to create variety in word choice. Good humanizers will maintain clarity and readability while removing signatures from your AI tool.
If a tool’s output needs extensive manual editing to be published, you are not saving time by using this tool. Watch out for humanizers that remove all personality from your content, leaving it bland and generic. Some edge and voice are required in effective marketing, which should survive the process of humanization.
Avoid tools that make unrealistic promises such as “100% detectable,” “guaranteed to pass all checkers forever,” etc. The detection technology evolves constantly, so no tool can guarantee permanent invisibility. Be wary of tools that have a cost but do not provide a free trial or a money-back guarantee.
A legitimate service is confident enough in its ability to offer you a chance to test it before you buy it. Also, be sure that you will know what happens to your content (for example, is it used as a “training” resource) when you upload it into a paid tool, especially if you are uploading proprietary or sensitive marketing content.
Frequently Asked Questions
Will humanized content ever rank high enough in Google?
The answer is yes, but only if your content is high-quality, well-written, and provides real value to your readers. Google’s algorithms have improved significantly over the years and can evaluate content based on its quality (not just looking for patterns of AI). To increase your chances of ranking well, focus on using humanization to make your content easier to read and more enjoyable; don’t try to trick Google into thinking your content is written by humans.
Can I humanize content created using ChatGPT or Claude?
Yes. Humanizers are compatible with any AI tool that generates content, including ChatGPT, Claude, Gemini, and other language models. Good humanizers can identify and modify the AI-created writing patterns and “tells” inherent to each model. Many marketers today generate drafts of content using one AI tool and then humanize those drafts using a separate tool to leverage the strengths of both.
How much editing will I still need to do on my humanized content?
It depends on the tool(s) you’re using and what kind of content you are generating. The best humanizers will produce content that requires little-to-no additional editing—simply check the facts and ensure that your unique brand voice comes through clearly. Poorer humanizers may require a lot of editing to correct awkward phrasing or to recover the original intent that was lost during translation. Be sure to allow at least a few minutes for a cursory review and polishing of your humanized content prior to publishing.
Are humanizers cheating or unethical?
This depends entirely on how you use them and in what context. If you are submitting academic work produced using AI and/or humanizers as your own, this is almost certainly a violation of academic integrity policies.
However, if you are using AI and humanizers to assist with content marketing and provide transparency when required regarding how the content was created, these tools are considered nothing more than another productivity tool, similar to spell-checkers and editing software. What matters is whether you are providing legitimate value to your audience with the final product.
Do humanizers work for all languages?
Many major humanizers offer support for multiple languages, although performance can vary greatly. Typically, English receives the majority of development attention and will produce the best results.
Spanish, French, and German tend to perform relatively well. Support for less common languages often ranges from limited to poor. Prior to committing to humanizing content in non-English languages, please verify the language support offered by the specific tool you plan to use.
Can detection tools catch humanized content?
They can, depending on the quality of both the humanizer and the detection tool. Detection and humanization represent two sides of the same coin, and as such, the detection tools will continually evolve to detect humanized content, and the humanizers will evolve to avoid detection.
As long as there are people working on improving detection tools and humanizers, no humanizer can ever guarantee complete undetectability. Therefore, it is essential to combine humanization with some level of editing and/or expertise to create content that is valuable regardless of how it was created.
How do I know if my humanized content is truly undetectable?
Test your humanized content with multiple detection tools before publishing. There are several popular detection tools available, such as Originality.ai, GPTZero, and Turnitin. Aim to achieve detection scores indicating that at least 80% of your content is written by humans.
It is also worth noting that each detection tool uses a slightly different method to detect content created by AI; therefore, test with the tools most likely to be used by the parties that will ultimately evaluate your content. If you are creating content for clients or platforms that have specific detection policies in place, test with the tools they actually use.
