Updated September 2026 · every plan below priced per post
AI humanizer for bloggers: humanize AI blog content without losing your SEO
An 1,800 word post goes through here in two runs instead of four, because the cap is 1,500 words rather than 500. That single number decides whether a rewritten post reads like one writer or like four.
Below: every paid tier in this category worked out as a cost per published post, and the line by line list of what a rewrite does to your internal links, your target phrase and your headings.
2 free runs a day, up to 200 words each. We save your run so you can get back to it, and a delete button appears with the result. See privacy.
This is our own AI-pattern score, measured here on sentence rhythm, template phrases, vocabulary variety and passive voice. It is not a GPTZero, Turnitin, Originality.ai, Copyleaks or ZeroGPT result, and it does not predict one. Worth knowing: we also ask the rewrite to vary sentence length, drop template phrases and prefer the active voice, so some of the drop is built in. Read the two panels below, not just the number.
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1,500 words a run on every plan · Plans planned from $9/month billed yearly for 15,000 words
The short answer
For a blogger, an AI humanizer is bought on two published numbers: how many words go in per request, and how many words a month the plan includes. Priced against an 1,800 word post, the entry tiers read on their own pages between July and September 2026 range from about $0.43 to $6.00 per published post, and the cheapest monthly plan in that set is not the cheapest per post. The second thing to know is that a rewrite is a plain-text operation, so it strips every internal link in the draft. Rewrite first, then build the on-page layer in your CMS, or you will relink the whole post by hand.
Last updated September 3, 2026. Every plan price and word allowance below carries the date we read it on that vendor's own page.
One post, nine plans
What an AI humanizer costs per published blog post
Vendors price by the month and by the word, which makes the plans hard to line up against a publishing schedule. Here is the same set of published figures divided by 1,800 words, this page's stated assumption for a long-form US blog post. Every allowance is the vendor's own, with the date it was read.
| Tool and plan | Price | Monthly allowance | Pastes per 1,800 word post | Posts a month | Cost per post | Checked |
|---|---|---|---|---|---|---|
| Undetected.ai Starter (this site) | Planned $9/mo billed yearly | 15,000 words a month | 1,500 words a run, so 2 pastes | 8 posts | $1.13 | Sep 3, 2026 |
| Undetected.ai Pro (this site) | Planned $19/mo billed yearly | 80,000 words a month | 1,500 words a run, so 2 pastes | 44 posts | $0.43 | Sep 3, 2026 |
| Undetectable.ai | $5/mo billed yearly | 10,000 words a month | No per-request cap published | 5 posts | $1.00 | Jul 31, 2026 |
| Walter Writes AI | $8/mo billed yearly | 30,000 words a month | 750 words a request, so 3 pastes | 16 posts | $0.50 | Jul 24, 2026 |
| WriteHuman Basic | $12/mo billed yearly | 80 requests at up to 600 words | 600 words a request, so 3 pastes | 26 posts | $0.46 | Jul 31, 2026 |
| Phrasly | $10.99/mo billed annually | Unlimited humanizer words | 5,000 words a process, so 1 paste | No monthly ceiling | Falls with volume | Aug 29, 2026 |
| Humbot entry | $6.79/mo billed yearly | 3,000 basic plus 1,000 advanced | 500 words a request, so 4 pastes | 2 posts | $3.40 | Aug 25, 2026 |
| BypassGPT Basic | $12/mo list, $8 on the site countdown | 5,000 words a month | 500 words an input, so 4 pastes | 2 posts | $6.00 at list, $4.00 on the countdown | Aug 4, 2026 |
| Surfer Discovery | $49/mo billed yearly | Not published per plan | 1,000 words signed in on the free tool | Not calculable from published figures | Not calculable from published figures | Sep 3, 2026 |
Three things fall out of that table that the headline prices hide. The first is that monthly price and cost per post rank the field differently. WriteHuman's $12 Basic plan is more expensive per month than our $9 Starter and cheaper per post, because 80 requests of 600 words is more total volume than 15,000 words. Humbot's $6.79 entry is the second cheapest plan on the page and the second most expensive per post, at $3.40, because 4,000 words a month is two posts.
The second is the per-request cap, which is where long-form gets punished. At 500 words a request, an 1,800 word post is four separate rewrites that cannot see each other, and the register drifts at every seam. Phrasly's 5,000 word process cap is the most generous published figure in this comparison and takes any normal post in one pass, which is worth saying plainly on our own page: on per-request room, they beat us.
The third is Surfer, which is the tool most content teams already have a seat for. Its humanizer ships inside the plans rather than being sold on its own, and the cheapest plan naming it is Discovery at $49 a month billed yearly, read on September 3, 2026. Surfer publishes a 500 word limit on the free tool and 1,000 words once you sign in, but no per-plan humanizer allowance, so the cost per post genuinely cannot be calculated from what is published. If you are already paying for Surfer for the content editor, the humanizer is included and the marginal cost is zero, which is the correct answer for a lot of teams.
The same arithmetic across the whole category, expressed as a cost per thousand words rather than per post, is on how much an AI humanizer costs, and the paid field ranked on allowance and data handling is on the best AI humanizer comparison.
What survives the rewrite
What a humanizer does to the SEO you already built
This is the part of the job that the student-facing pages in this category never cover, because a student has no internal links and no target phrase. For a publisher it is the whole risk. Line by line, here is what a rewriting pass touches in a post you optimized before you ran it.
| On-page element | What happens | What to do about it |
|---|---|---|
| Internal links and outbound links | Lost, every time | A humanizer takes plain text. Paste formatted HTML into one and the anchors come out as bare words, which quietly strips the internal linking a post was built around. Rewrite the draft first, then add links, headings and formatting in your CMS. Do it the other way and you will relink 14 anchors by hand. |
| Your exact-match target keyword | Thinned out | Rewriting for variety is rewriting toward synonyms, and your primary phrase is one of the things it will vary. Count the occurrences before and after. Put the phrase back into the H1, the first 100 words and one H2 by hand, because those are the placements a rewrite is most likely to touch. |
| H2 and H3 structure | Rewritten if you paste it | Headings are usually the part you spent the longest matching to search intent. Rewrite the body paragraphs and leave the headings out of the paste, or check every one afterwards against the queries you wrote them for. |
| Title tag, meta description, slug | Untouched | They live in your CMS, not in the paste, so nothing happens to them. Worth saying plainly, because a rewrite does not update them either: if the body changed direction, they are now describing a slightly different article. |
| Image alt text and schema markup | Untouched | Same reason. Neither is in the text you paste, so neither improves or degrades, and neither gets the benefit of the rewrite you just paid for. |
| Statistics, prices, product names and dates | At risk | A rewrite is a language operation. It will happily reword a sentence containing a number and, occasionally, reword the number's framing with it. Anything a reader could act on financially gets read back against the source before publishing. This is the check people skip. |
| Quotations and attributed claims | Must be checked | A paraphrased quotation inside quotation marks is a factual error with your byline on it. If the draft quotes a source, confirm the words came back verbatim. |
| First-hand experience and expertise | Cannot be added | The part of a page that separates it from the other 30 results is the thing you know and the others do not. No rewriting pass creates that, and the smoother the prose gets, the more obvious it is that nothing underneath it was lived. Write the experience in yourself, before or after. |
The order that avoids most of this: draft, fact check, rewrite, then build the on-page layer in the CMS. Almost every complaint about humanizers wrecking a post comes from doing those four steps in the other order.
The thing this market sells against
Google does not penalize AI writing, so why humanize at all
A large part of this category sells insurance against a Google penalty that Google's own documentation does not describe. The relevant policy is scaled content abuse, and Search Central defines it as "when many pages are generated for the primary purpose of manipulating search rankings and not helping users", with the named example being "using generative AI tools or other similar tools to generate many pages without adding value for users". The violation is volume without value, and the test is applied to the page, not to the process that produced it.
So if a vendor's pitch is that its rewriter protects your rankings from an AI penalty, it is selling you cover for a risk that is not written down anywhere. We went through the guidance in full on does Google detect AI content and looked at what the ranking data actually shows on does Google penalize AI content.
Which leaves the honest reasons a professional publisher pays for one. There are four, and only one of them involves a search engine at all.
Client acceptance gates
The commercial one. A meaningful share of US content buyers now paste a deliverable into a detector before approving the invoice, and a percentage over their threshold means a rejected piece and an unpaid week. The detector is often wrong, but it is the client's tool and the client's contract, so the score is a business fact whether or not it is a factual one.
Disclosure and editorial policy
Publishers, affiliate networks and trade outlets increasingly require disclosure of AI assistance, and some prohibit it in bylined work. Read what you signed before you buy any tool, because a rewriting pass does not change the terms you agreed to.
The prose is genuinely flatter
Model output reads smooth for 300 words and monotonous for 2,000. Sentence lengths cluster, the same six transitions carry every section, and paragraphs arrive in the same shape. Readers rarely name it, they just leave. Fixing it is editing work, and a rewrite does a mechanical part of it.
One house voice across four writers and a model
If a blog is fed by several freelancers plus a model, the model is the register that stands out. Content teams run a rewriting pass to pull everything toward the house voice, which is a production step and has nothing to do with detection.
The production order
How to humanize AI blog content without redoing your on-page work
01
Fact check before you rewrite
Verify every statistic, price, product claim and source in the draft first. A rewrite verifies nothing, and a fabricated figure survives it in better prose than it went in with.
02
Paste the body text, not the HTML
Leave headings, links and formatting in your CMS. Run the paragraphs. An 1,800 word post goes through here in two runs rather than four, which is the difference between one voice and several.
03
Read the two versions against each other
Our AI-pattern score sits on the draft and on the rewrite, with the reasons behind each number. It is our own measurement of the patterns above, made here, not a reading from anybody else's scanner.
04
Rebuild the on-page layer, then publish
Put the internal links back, confirm the target phrase is still in the H1 and the opening paragraph, and add the paragraph only you could write. That last step is the one that decides whether the post ranks.
Sizing the plan
How many words a month your publishing schedule really needs
The arithmetic is posts a month, times average post length, plus about 30 percent. The 30 percent is the part people leave out and then run out of allowance on the 22nd. Nobody accepts the first rewrite of every section: you re-run the introduction, you re-run the two paragraphs that came back stiff, and every one of those re-runs spends words. Assume you will process each post roughly 1.3 times.
At eight posts of 1,800 words that is 14,400 words of drafting and about 18,700 words of actual usage, which puts a 15,000 word plan slightly under water and a 30,000 word plan comfortably clear. At four posts a month you are around 9,400 words and almost any entry tier works. At twenty posts, which is a small agency rather than a blog, you are near 47,000 words and the only sensible shapes are a large word pool or an unmetered plan.
Two smaller things worth checking on any plan before you buy it. Unused words essentially never roll over in this category, so buying a big pool for an occasional heavy month is buying a lot of nothing in the light ones. And several vendors meter requests as well as words, which changes the answer if your habit is to paste in small pieces: 80 requests a month sounds generous until an 1,800 word post costs you three of them.
Publishing at real volume from your own systems is a different problem again, and if the drafts are already coming out of a pipeline rather than a document, the AI humanizer API is the shape that fits. Teams running several writers against one house voice will get more out of the content team setup.
Questions publishers ask
AI humanizers for bloggers, answered
Does Google penalize AI content?
No, not for being AI-assisted. Google's spam policies define the violation as "scaled content abuse", which it describes as "when many pages are generated for the primary purpose of manipulating search rankings and not helping users", and names "using generative AI tools or other similar tools to generate many pages without adding value for users". The test is value and intent, not the tool. A well-researched post drafted with AI and edited by someone who knows the subject is not in breach of anything.
Will humanizing my AI content make it rank?
Not on its own. Rewriting changes how a post reads, not what it knows. If the draft has no original data, no first-hand experience and nothing the other results lack, a rewrite produces a smoother version of a page with nothing to say. Humanizing is worth paying for when the underlying article is genuinely useful and the prose is letting it down.
How much does an AI humanizer cost for a blog?
Price it per published post rather than per month. At 1,800 words a post, entry plans in this category work out between roughly $0.43 and $6.00 a post, and the spread comes almost entirely from the monthly word allowance rather than the headline price. The $12 plan in the table above costs more per post than the $9 one, because it buys fewer words.
What is the best AI humanizer for bloggers?
The one whose per-request cap fits a whole post and whose monthly allowance covers your real publishing cadence. Those two published numbers decide more than anything in the marketing. A 500-word cap turns an 1,800 word post into four disconnected fragments, and stitching them back together costs more time than the rewrite saved.
Does an AI humanizer remove my internal links?
Yes, if you paste formatted content. Humanizers operate on plain text, so anchors come back as ordinary words and the internal linking a post was built around disappears silently. The fix is order of operations: rewrite the raw draft, then add links, headings and formatting in your CMS.
Will humanizing change my target keyword?
It can thin it out, because rewriting for variety means rewriting toward synonyms. Count occurrences of your primary phrase before and after, and put it back by hand into the H1, the first 100 words and at least one H2. Those are the placements worth protecting and they take about a minute to restore.
Is AI content bad for SEO?
Thin content is bad for SEO and AI makes thin content cheap to produce, which is where the belief comes from. Google evaluates the page, not the process. The failure mode to avoid is publishing volume with nothing original in it, and no rewriting tool fixes that, because the problem is the research, not the wording.
Do I need to disclose that a post was drafted with AI?
Google does not require it. Your client, publisher or affiliate network might, and several now do in writing. Check the contract rather than the search guidance, because the obligation nearly always comes from the commercial relationship rather than from the search engine.
How many words a month does a blogger actually need?
Multiply your posts a month by your average post length, then add about 30 percent, because nobody accepts the first pass on every section. Eight posts of 1,800 words is 14,400 words of drafting, so a 15,000 word plan is tight and a 30,000 word plan is comfortable. Unused words almost never roll over anywhere in this category.
Keep reading
The rest of the buying decision
Surfer AI humanizer
What the humanizer inside Surfer costs, what its word caps are, and the published test results on its output.
AI humanizer for content teams
Several writers, one house voice, and the workflow that keeps a rewriting pass out of everyone's way.
AI humanizer API
Rewriting from your own publishing pipeline, with the request shape and the rate limits written down.
AI to human text converter
Which parts of a draft change and which come back untouched, with the whole field compared on caps and price.
Does Google penalize AI content
The spam policy in Google's own words, and what the ranking evidence shows underneath it.
How much does an AI humanizer cost
Every published tier in the category worked out as a cost per thousand words.
Run one section of a real post
Take the introduction of a post you have already published, paste it as plain text, and read the two versions against each other. That tells you more about whether a rewriting pass belongs in your workflow than any comparison table, including the one above.
1,500 words a run on every plan · Your runs saved to your history, delete any time