AI wrote the first draft. Make it sound like you.

Rewrite AI text into your voice, then re-check it with our own detector.

Original
Humanized

Your humanized draft will appear here — same meaning, natural rhythm.

0 words · up to 1,200 per rewrite

Scored in memory, never stored.

Our product

One scan, three verdicts

One plain-language call — Human-Written, AI-Assisted, or AI-Generated — with the evidence attached.

Sentence analysis

Not just a confidence number: the sentences that drove the call, shaded by strength.

AI assistance

Machine drafts a person edited get their own verdict. AI-Assisted is a category, not a rounding error.

Humanized text

Paraphraser and humanizer output is what most detectors miss. Ours is trained on it.

Always up to date

Does markhuman detect the latest AI models?

Yes. The detector is retrained against frontier models as they ship, and it covers the harder case most checkers miss: AI text already pushed through a humanizer or paraphraser.

OpenAI

ChatGPT

GPT-3 through GPT-5

Low-variance, evenly formal phrasing

Anthropic

Claude

Claude 3 through Opus 5

Symmetrical structure, measured tone

Google

Gemini

Gemini 1.5 through Gemini 3

Fact-dense conversational synthesis

Meta · xAI · more

Open models

Llama, Mistral, Grok, DeepSeek

Shared instruction-tuned cadence

Also coveredSee how it works
Humanized AI textCovered
Paraphraser outputCovered
AI-assisted editsCovered
Translated AI textCovered
Mixed human + AICovered
Lightly edited draftsCovered
Short passages50 words up
Long documents2,500 per scan
Non-native EnglishTuned against

The report

Evidence, not a mystery score

Every scan returns the verdict, a composition bar for the document, and your text shaded sentence by sentence.

AI detection reportSample

AI-Generated

58 words scanned

99% AI

In the contemporary educational landscape, the integration of technological solutions has become increasingly paramount. Educators must leverage innovative methodologies to facilitate optimal learning outcomes for diverse student populations. Furthermore, the utilization of data-driven approaches enables institutions to enhance their pedagogical frameworks substantially. It is worth noting that these transformative strategies require comprehensive implementation protocols.

AI-Generated100%
  • Document composition

    A stacked bar splits the text into AI, assisted, human, and uncertain.

  • Plain-language verdict

    One call plus a confidence level — no jargon, no raw log-likelihoods.

  • Flagged sentences in place

    Shading runs on a four-step strength scale inside your own text.

  • An honest note

    When the document and sentence views disagree, the report says so.

Open the AI detector

How it works

How markhuman's AI detector works

Paste, scan, read the report. No watermarks, no metadata, no upload that persists — the detector reads the writing itself.

  1. 01Paste your text

    A draft, essay, email, or article — up to 2,500 words, free.

  2. 02Pick your tool

    Humanize the draft into your voice, scan it for AI signals, or both.

  3. 03Read the report

    One verdict — Human-Written, AI-Assisted, or AI-Generated — down to the sentence.

AI detection reportSample

AI-Assisted

68 words scanned

62% AI

The new reading curriculum borrows heavily from how early-grade teachers already structure phonics. It folds a short daily lesson on letter-sound patterns into a longer comprehension block. Most teachers I know have been running some version of this for years already. I'd push back on the assumption that every child learns to read the same way. Kids who read for pleasure at home walk in with a head start the curriculum does not account for.

A report is a probability estimate about a piece of text, not a finding about a person. Three of five sentences carry machine signal — read the lines behind the verdict, not the headline.

Features

How is markhuman's AI detector different?

Most checkers score perplexity and burstiness, which one paraphrasing pass defeats. We built for the cases that actually break detectors.

Built for the false-positive tail

Most detectors report an average. We tune the hard part: how often real human writing gets flagged at the threshold that matters.

Trained on humanized output

Our training set includes text pushed through commercial humanizers, mirrored against the human originals — the exact evasion route people use.

Not perplexity and burstiness

Those two signals are trivially gamed, and why older detectors fail in practice. We model joint lexical and structural patterns instead.

Nothing is stored

Text is scored in memory and discarded when the response returns. No training on your documents, no account required to try it.

Limits

What markhuman will not promise

Most AI drafts fail as writing in the same few ways: even sentence length, signposted transitions, a closing paragraph that restates the opening. A thesaurus pass leaves all of that in place. markhuman regenerates the passage — rhythm, word choice, and the joints between sentences — then scores the result with the same detector that powers the rest of the site. Only a draft that clears that check is returned.

Nothing in the pipeline verifies that your meaning survived — read numbers, names, and dates against the original before you use the output. False flags cluster on formal prose and fluent second-language English; missed detections cluster on heavily edited machine drafts.

The free allowance is a daily pool, not a trial: no card, no email gate, no blur, and signing in raises the cap and nothing else. Short and mid-length passages are where the rewrite works best; long formal documents are the hard case for every automated rewriter, ours included.

The humanizer is for drafts that already say what you mean and still read like a model wrote them. The detector shows which sentences carry the signal — in your work, or someone else's. Classrooms and content teams use the same plans on the pricing section; /contact stays in the footer for anything we have not put on the page.

A ChatGPT, Claude, or Gemini draft you actually agree with: the argument is yours; the scaffolding is not. Signposted transitions, even paragraph mass, a restating close — that is what the rewrite removes. It will not invent a view you have not taken.

An essay, email, or post before it leaves your hands: run the detector on the original, humanize, then re-check. The gate is our own detector, and a pass here is evidence about our scanner only — not a translation of GPTZero or Turnitin.

A submission, pitch, or page you have to review: sentence shading shows which lines drove the call. AI-Assisted is its own verdict because most real documents sit in the middle. Do not use a report as the sole basis for a grade, a rejection, or a hiring decision.

Not: a way to hide work you did not do. Schools, employers, and publishers have their own rules; cleaner cadence does not make writing yours. If you cannot talk through the claims without the draft in front of you, write the thing.

We do not publish pass rates for GPTZero, Turnitin, Originality.ai, or anyone else. Detectors disagree often enough that a number we have not measured would be a claim, not a result. Every humanizer draft is scored by our own detector, and only a passing one is returned. If you need a third-party read, run that scanner yourself.

The detector's free tier is 50 scans a day at up to 2,500 words each; signed-up free accounts add 20,000 detector words a month. The humanizer's free pool is 2,000 words a day without an account and 10,000 signed in, up to 1,200 words per rewrite. Unused words do not roll over; pools refresh the next UTC day. Signing in raises the caps and nothing else — no blur, no partial output, no card field in the free flow. If no candidate draft clears our detector, the words are refunded. Pasted text is sent to our inference service to be rewritten or scored. It is not sold, shared, or used to train a model.

Pricing

Simple pricing, free to start

Every plan starts free. Upgrade when you need longer documents or monthly volume — change or cancel anytime.

Save up to 32%

Starter

200,000 words / month

$6/ month

Billed $72 yearly

  • 10,000 words per request
  • Full humanize engine
  • Built-in AI detector
  • Adjustable rewrite depth
  • Plagiarism-safe output
Most popular

Pro

500,000 words / month

$13/ month

Billed $156 yearly

  • 20,000 words per request
  • Everything in Starter
  • Deepest rewrite depth
  • Voice matching
  • Priority processing

Elite

1,500,000 words / month

$27/ month

Billed $324 yearly

  • 35,000 words per request
  • Everything in Pro
  • Bulk document mode
  • Priority support
  • Top up words anytime

Teams

5,000,000 words / month

$61/ month

Billed $732 yearly

  • 50,000 words per request
  • Everything in Elite
  • 3 team seats included
  • Shared word pool
  • Early access features
  • Top up words anytime

Free: 20,000 words / month, 2,500 words per scan, 50 scans a day per browser. Paid plans skip the daily cap. Secure checkout by Stripe. Cancel anytime.

FAQ

AI humanizer FAQs

What the rewrite does, what it costs, and what it will not promise about other detectors.

What is an AI humanizer?

An AI humanizer rewrites machine-generated text so it reads more naturally — varying sentence rhythm, word choice, and transitions while keeping your meaning intact. markhuman.ai's humanizer is built for ChatGPT, Claude, and Gemini drafts. Every candidate rewrite is scored by the built-in AI detector, and only a draft that clears that check is returned. It assumes you already did the thinking: paste a draft that says what you mean and still sounds assembled. It will not invent a view you have not taken, and nothing verifies that a number or name survived — read the output against the original.

Is markhuman.ai a free AI humanizer and AI detector?

Yes. The humanizer gives 2,000 words a day with no account and 10,000 signed in, up to 1,200 per rewrite — no credit card, no blur, no email gate. The detector is separately free at 50 scans a day, 2,500 words each. Unused humanizer words do not roll over; the pool refreshes the next UTC day. These numbers come from the same constants the rate limiter reads, so the page cannot drift from the product. Signing in raises the cap and nothing else.

What's the difference between an AI humanizer and a paraphraser?

A paraphraser swaps synonyms and keeps the stiff structure — same paragraph lengths, same signposted transitions, same restating close. markhuman rewrites at the structure level: sentence boundaries move, signposts come out, paragraph mass spreads. That is why a detector still sees a thesaurus pass but not necessarily a regenerate. The tradeoff: regeneration can drift, especially on names, dates, and caveats, so the read-through against your original is not optional. If a paraphrased draft still reads assembled, the scaffolding was never touched.

Read every question we get asked

Make your next draft sound like you

Paste a draft, watch it come back human, and check the score yourself. Free to start — no card.