Refine AI Drafts into Natural Writing
Paste generated content and instantly improve tone, flow, and clarity—while keeping your original meaning.
Input Text
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Private by default
We don’t use your inputs or outputs. Your content is yours.
Improves readability
Enhances clarity and tone instead of just swapping synonyms.
Fast & reliable
Process long passages in seconds.
Human-Level Rewrites in 3 Steps
Quickly transform AI-sounding text into natural, varied language while preserving meaning.
Paste AI Draft
Drop in generated content or any passage you want to refine.
Humanize
Our model restructures, varies phrasing, tightens flow, and improves tone.
Copy & Use
Review the refined version and export it or keep iterating instantly.
Loved By Students Worldwide
Join over 3 million students who trust Caktus to excel.
With social media, school, it is definitely hard to find time. Caktus AI is so helpful with all my school work so I definitely recommend!
Livvy Dunne
LSU
I trust Caktus completely for my schoolwork. One minute it’s giving me 30 creative nicknames for a skeleton in Anatomy, and the next it’s helping me write poems in French. It’s my go-to for everything from essays to language help.
Nicholas P.
Sr. in High School
This is way better than ChatGPT. It sounds more human, gives excellent citations, and just works every time. I share it with all my friends.
Aaron S.
Texas A&M University
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Frequently Asked Questions
Will this be detected by my school's AI checker?
Our Undetectable tool is specifically designed to rewrite AI text to bypass popular detection tools like Turnitin, GPTZero, and others. While no tool can offer a 100% guarantee, our advanced model gives you the best chance of avoiding detection.
How is this different from a normal paraphrasing tool?
Standard paraphrasers just swap out words for synonyms, which often results in awkward phrasing and is still easy to detect. Our tool uses a sophisticated AI model to restructure sentences, improve flow, and adopt a more natural, human-like writing style.
Is there a limit to how much I can rewrite?
Our free trial allows you to test out the tool. For unlimited access and to rewrite longer texts without restriction, you'll need a premium subscription. This also unlocks our entire suite of over 25 other AI tools.