AI detection tools are widely used to evaluate the originality of written content. However, these systems are not always accurate and can incorrectly classify human-written or lightly edited AI content as fully AI-generated, which results in negative consequences for students and researchers.
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| Feature | Free | Starter | ProMost popular | Power |
|---|---|---|---|---|
| Words per month | 500 | 30,000 | 80,000 | 250,000 |
| Words per request | 500 | 1,000 | 1,500 | 2,500 |
| AI Humanizer | ||||
| Built-in AI Detector | ||||
| Smart humanization engine | ||||
| All tone options | ||||
| Copy & download output | ||||
| Saved citations | 5 / month | Unlimited | Unlimited | Unlimited |
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Before and after
See exactly what changed.
Same meaning. Same voice. Clearer prose — and the detection score alongside it, both times.
Schools and publishers lean on AI detectors now, and those tools get things wrong — often enough that people lose marks for work they genuinely wrote. ClearPen lets you see what a detector sees, and tightens prose that reads as flat or formulaic, without changing what you actually said.
Illustrative example. Scores come from ClearPen's own detector and vary by text — third-party detectors use different models and will return different numbers.
Why us
Most humanizers are a black box.
They hand back text and tell you nothing. ClearPen shows the score, the edits, and the reasoning.
Feature
ClearPen
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Shows you every change it made
Built-in detector — see your score live
Preserves meaning & citations
Natural rhythm, not synonym swap
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Why trust the output
Built to be checked, not taken on faith.
Most tools in this category hand back a block of text and ask you to trust it. ClearPen shows you the score, the changes, and the reasoning — so the judgement stays yours.
Check it yourself
You never have to take our word for it.
The detector is built into the editor. Run your text before and after and read both scores yourself — on the free plan, without an account upgrade.
Nothing hidden
Every change is shown to you.
ClearPen marks what it altered and why, sentence by sentence. If a rewrite drifts from what you meant, you will see it and can reject it.
Your meaning stays
Arguments, citations and structure intact.
The pipeline refines phrasing and rhythm. It does not invent sources, restate your conclusions, or quietly change what you claimed.
AI detectors produce false positives, and the people who pay for them are usually the ones who did the work — non-native English writers most of all. We built ClearPen so a writer can see what a detector sees before someone else does.
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