Best AI Humanizer | Tools & Features
When looking for the best AI humanizer, you want one that can transform stiff AI-generated text into a more natural tone while preserving meaning. It’s also important that the humanizer not introduce any errors or problems with clarity and flow.
There are many AI humanizers currently available, each with unique features. Let’s take a look at five free tools for humanizing AI text and explore their specifications.
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QuillBot
QuillBot’s AI Humanizer is completely free with no sign-in required and can humanize up to 125 words at a time. To humanize larger texts, you can break them into segments. A Premium plan ($8.33/month for an annual subscription) allows users to access an advanced mode and a higher word limit per scan in addition to other QuillBot tools and features.
QuillBot’s humanizing tool works very quickly, and its output is grammatically accurate and flows naturally. Changes to the text are color-coded, so users can easily see what has been changed. Users can adjust the output by choosing synonyms from a drop-down menu, ensuring a consistent tone of voice and conveying precise meaning. QuillBot also offers a free Paraphraser and Grammar Checker, which can be useful for further refining AI-generated text.
Phrasly
Phrasly requires a sign-in to use and allows free users to humanize 300 words. After that, users can pay $12.99/month for the Premium plan, which includes unlimited humanization.
Phrasly’s AI humanizer is able to alter the vocabulary and sentence structure of texts and offers five different humanization drafts for users to choose from. Users can also replace sentences with alternative phrasings, though there is no option to change individual words.
WriteSonic
WriteSonic’s AI humanizer is free to use and can humanize up to 200 words per scan. After a few scans, a sign-in is required to continue using the tool. WriteSonic’s paid plans start at $39 per month.
WriteSonic’s tool allows users to choose from 14 different tones (such as “friendly” and “formal”) and substantially changes the tone and vocabulary of texts. There is no option to change sentences or words within the tool once the text is generated.
AI Humanize
AI Humanize is free to use up to 200 words. For a higher word count and access to more advanced options, users can subscribe to an annual plan for $5/month.
There is only one tone option for the free version. The AI Humanize tool is able to preserve meaning while changing sentence structure. Changes are highlighted in the output, but there is no option to adjust the output in the tool once it has been generated.
Humanizer.org
Humanizer.org has an 80-word limit for its free version. Paid plans start at $9.99 per month.
In the free version of the humanizing tool, users can choose from 3 modes (fast, basic, and enhanced). Word choice and syntax are changed, and the tone is adjusted. After text is generated, it is automatically run through an AI detector that lets users know how likely the output text is to pass various AI detectors.
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Driessen, K. (2025, April 28). Best AI Humanizer | Tools & Features. Scribbr. Retrieved June 12, 2025, from https://www.scribbr.com/ai-tools/best-ai-humanizer/