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Writing that reads likeyou.

ClearPen refines AI-assisted drafts into natural prose and shows your AI-detection score before and after — so you can see exactly what changed, and why.

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ClearPen · Humanizer
InputAI97%

AI detection tools are widely used to evaluate the originality of written content. These systems classify human-written and AI text using statistical patterns.

HumanizedAI4%

Schools lean hard on AI detectors now — and the truth is, they get it wrong all the time. Even the work you wrote yourself can come back flagged.

Tone: CasualProcessing in 1.4s avg

The problem

Your real writing keeps getting flagged as AI.

Detectors aren't neutral. They punish formal style, ESL writers, and anyone whose sentences are slightly too clean. One false positive can cost you a grade, a client, or a career.

The implementation of artificial intelligence in modern systems
has fundamentally transformed how organizations operate.
Furthermore, the integration of these technologies enables
unprecedented levels of efficiency and scalability across
diverse industries and operational contexts globally.
⚑ AI-generated
⚑ 98% AI
⚑ Flagged
⚑ Robotic

Before and after

See exactly what changed.

Same meaning. Same voice. Clearer prose — and the detection score alongside it, both times.

Before97% AI · Flagged

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.

After ClearPen4% AI · Human

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.

What's inside

Four superpowers. One tap.

Detector built in

See your AI score before you hit send.

Live readout from a model trained on Turnitin, GPTZero, and Originality.ai patterns. No guesswork.

Turnitin96% 6%
GPTZero91% 4%
Originality.ai88% 9%
Rhythm engine

Natural sentence variation, not synonym swaps.

Restructures rhythm and burstiness — the exact patterns detectors flag, fixed at the structure level.

Tone control

Academic, casual, business — your call.

Pick the voice your audience expects. Tone stays consistent across paragraphs, never goes off-brand.

AcademicCasualBusinessCreative

One tap re-voices every paragraph — Casual selected.

Voice preserved

Your meaning. Your intent. Just clearer.

Keeps the argument, citations, and structure intact. We refine — we don't rewrite from scratch.

meaning: kept ✓

tone: kept ✓

structure: refined →

AI score: dropped 93pts

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.
Why we started ClearPen

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
Other tools
Shows you every change it made
Built-in detector — see your score live
Preserves meaning & citations
Natural rhythm, not synonym swap
Free forever plan
30-second result

Pricing

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Free

$0forever

500 words / month

  • AI detector built in
  • All tone presets
  • No credit card
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$10/mo

80,000 words / month

  • Everything in Free
  • Priority queue
  • History & export
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$20/mo

250,000 words / month

  • Everything in Pro
  • API access
  • Bulk humanization
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Real questions

You're probably wondering…

See your score in 30 seconds.

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500 free words · no credit card · 30 seconds