Simple, paid plans by word volume
AI humanizer pricing and plans that scale with how much you write
Every plan is sized by the words you humanize each month and includes our AI-pattern score before and after, meaning-preserving rewrites and every tone. Prices in USD. No plan is unlimited, because a rewrite costs us a real model call and we would rather publish a number we can honour.
Starter
Freelancers and working writers
$24/mo $49
$288 billed once a year billed monthly, $588 over a year
Save $300 a year versus monthly
Yearly: $24/mo, save $300 a year
100,000 words / mo
300 runs / mo
A full month of client work, essays and posts.
- 100,000 words humanized per month
- Across up to 300 runs a month, averaging 333 words a run
- Up to 40 runs a day, counted from your first run, so one day cannot spend the month
- 1,500 words in a single run, the same on every plan
- Our AI-pattern score, before and after
- Meaning-preserving rewrites
- Every tone: Standard, Academic, Casual, SEO
- CSV export of your run history, with the score before and after every run
Pro
Content writers and small teams
$49/mo $99
$588 billed once a year billed monthly, $1,188 over a year
Save $600 a year versus monthly
Yearly: $49/mo, save $600 a year
300,000 words / mo
800 runs / mo
Steady publishing volume across every tone.
- 300,000 words humanized per month
- Across up to 800 runs a month, averaging 375 words a run
- Up to 107 runs a day, counted from your first run, so one day cannot spend the month
- 1,500 words in a single run, the same on every plan
- Our AI-pattern score, before and after
- Meaning-preserving rewrites
- Every tone: Standard, Academic, Casual, SEO
- Batch upload of .docx and .txt files with one ZIP download, a team of 3 on one shared allowance, and CSV export
Scale
SEO teams and agencies
$99/mo $199
$1,188 billed once a year billed monthly, $2,388 over a year
Save $1,200 a year versus monthly
Yearly: $99/mo, save $1,200 a year
1,000,000 words / mo
2,000 runs / mo
High volume at a price that stays honest.
- 1,000,000 words humanized per month
- Across up to 2,000 runs a month, averaging 500 words a run
- Up to 267 runs a day, counted from your first run, so one day cannot spend the month
- 1,500 words in a single run, the same on every plan
- Our AI-pattern score, before and after
- Meaning-preserving rewrites
- Every tone: Standard, Academic, Casual, SEO
- Everything in Pro, a team of 10 on one shared allowance, and an API key for POST /api/v1/humanize
Prices in USD. Yearly billing saves 50% versus paying monthly on every tier. Every plan carries three published ceilings (words a month, runs a month and runs in a day) and all three are enforced. Buying needs an account with a confirmed email address: we send the confirmation link when you sign up, and it brings you straight back to the plan you picked. Payment itself happens on our payment processor's secure checkout, and you can cancel from your account at any time.
How much does an AI humanizer cost?
An AI humanizer costs roughly $8 to $20 per month for a normal writing volume, and the honest way to compare plans is cost per 1,000 words rather than the headline price. Undetected.ai starts at $24 per month billed yearly for 100,000 words, which works out at $0.24 per 1,000 words, and drops to $0.16 on the $49 Pro plan with 300,000 words. Across the category, entry plans run from about $5 to $12 per month, and almost all of them buy far fewer words than the headline suggests.
Competitor prices below were read off each vendor's own pricing page on the date shown, in USD.
In context
What 1,000 words actually costs across the category
Entry plans are what people compare, so this table uses each vendor's cheapest paid tier at its annual rate. The per-word column is the number that decides whether a plan is good value at your volume.
| Tool | Cheapest paid plan | Words included | Per 1,000 words | Price checked |
|---|---|---|---|---|
| Undetected.ai (Starter) | $24.00/mo billed yearly | 100,000/mo | $0.24 | Our current price |
| Undetected.ai (Pro) | $49.00/mo billed yearly | 300,000/mo | $0.16 | Our current price |
| Undetectable.ai | $5.00/mo billed yearly | 10,000/mo | $0.50 | July 24, 2026 |
| Walter Writes AI | $8.00/mo billed yearly | 30,000/mo, 750 words per request | $0.27 | July 24, 2026 |
| WriteHuman | $12.00/mo billed yearly | 80 requests at up to 600 words | $0.25 if you fill every request | September 18, 2026 |
| QuillBot Premium | $8.33/mo billed yearly | Unlimited paraphrasing, humanizer included | Not metered by word | July 16, 2026 |
We are not the cheapest way in and we do not pretend to be. Undetectable.ai's entry tier is $5 a month billed yearly against our $24, and we broke its full price list down on our Undetectable AI pricing breakdown. What you get for the higher entry price is volume: our Starter carries 100,000 words a month at $0.24 per 1,000 words and our Pro plan lands at $0.16, while the entry tiers in the table sit between about $0.25 and $0.50, so compare at your real monthly volume rather than at the headline.
Good questions
Questions people ask about AI humanizer pricing
How much does an AI humanizer cost per month?
Most paid humanizers cost between $8 and $20 per month on annual billing, and between $12 and $30 if you pay monthly. Our Starter plan is $24 per month billed yearly for 100,000 words, Pro is $49 for 300,000 and Scale is $99 for 1,000,000. Annual billing across the category is typically close to a half-price offer, which is why the low numbers you see quoted almost always assume a twelve-month commitment.
Is there a free AI humanizer?
Free tiers across the category are small: typically 150 to 300 words as a one-time trial or a few short requests a month. Ours is a one-time trial: 3 runs of up to 300 words and 900 words in total, with part of each rewrite shown and a watermark on copies, no card, plus a demo anyone can run twice a day without signing up. There is no free plan behind it. It is smaller than the $24 Starter plan on purpose, because every rewrite costs us a real model call. If your budget is genuinely zero and a 900-word trial is not enough, a competitor's trial will serve you better than we will, and we would rather say so.
How many words per month do I actually need?
Count what you write, not what you might write. A student with two or three assignments a term rarely passes 10,000 words a month. A working freelance writer sits between 20,000 and 40,000. A content team publishing daily clears 80,000 quickly. Buy one tier above your typical month rather than your busiest month, because unused words do not roll over on any plan in this category.
Are AI humanizers worth paying for?
They are worth it when a false AI flag costs you something real: a resubmission, a client relationship, a graded assignment on writing you did yourself. At $24 to $49 a month that is modest insurance against a problem detectors create at a measurable rate. They are not worth it if you only need occasional rewriting, where a paraphraser or careful self-editing does the job.
Is yearly or monthly billing better?
Yearly is half price here on every tier, so it wins on cost whenever your need is ongoing. Monthly wins whenever it is not. If you bought a humanizer for one dissertation, one launch or one semester, the annual saving is not a saving, because you are paying for months you will not use.
On every plan
The proof and the quality come standard
No matter which plan you pick, you get the full humanizer: the AI-pattern score, the gauge, every tone and rewrites that keep your meaning.
Our AI-pattern score, before and after
Four measured signals - sentence rhythm, template phrases, vocabulary variety and passive voice - scored on your draft and on the rewrite. It is our own measure, not a GPTZero, Turnitin, Originality.ai, Copyleaks or ZeroGPT result.
The AI-pattern gauge
Watch our score sweep from the number we measured on your draft to the number we measured on the rewrite, with the reasons behind both.
Meaning-preserving rewrites
Your facts, argument and structure stay intact, so the output is natural and still yours.
Every tone
Standard, Academic, Casual and SEO, plus a light-to-strong strength control.
Pricing questions
Quick answers before you pick a plan
Pick a plan and make your writing read like you wrote it
Every plan rewrites your own text and shows our AI-pattern score before and after. Start with the volume that fits how much you publish.
USD · Billed yearly · Cancel anytime