AIHumanizer.ai is a rewriting tool sold on getting text past detectors, with four tiers running from free to $49.99 a month. Its site loads cleanly and its figures are all published. Below is what those figures say, followed by an honest account of who should look at a detector instead.
Paste some text or load the example to estimate AI likelihood.
All figures here were read from aihumanizer.ai on 16 August 2026. The site returned HTTP 200 throughout and blocked nothing, so unlike some tools in this category every number below came from the vendor's live pages.
The product describes itself as an AI humanizer that turns AI text into content which, in its words, effortlessly outsmarts AI detectors. It names GPTZero, Originality.ai and Turnitin as the systems it targets. It offers three rewriting modes, Basic, Standard and Advanced, and lists support for over 50 languages.
| Plan | Monthly | Yearly | Words per month | Words per input |
|---|---|---|---|---|
| Free | $0 | $0 | 500 | 80 |
| Basic | $19.99 | $9.99 | 10,000 | 500 |
| Pro | $29.99 | $19.99 | 50,000 | 1,000 |
| Unlimited | $49.99 | $19.99 | Unlimited | Unlimited |
Two details deserve attention.
The free tier's per input cap is 80 words. That is roughly three sentences. Unregistered visitors are offered 300 words before signup, but once you have an account the per run ceiling is 80. A free tier that advertises 500 words a month while metering them 80 at a time is a demo rather than a working allowance, and it is worth knowing before you invest time in setting up.
The yearly prices for Pro and Unlimited are both listed at $19.99, despite monthly rates of $29.99 and $49.99. We are reporting what the pricing page displayed rather than guessing at the reason. If you are considering the annual plan, confirm on the checkout screen what you are actually charged.
The terms of service identify the operator as AIHumanizer, part of AIHumanizer AI. No registered company number or postal address is published. The document states that Your data is subjected to US jurisdiction and is transferred and processed in the United States, but does not name a governing state.
The refund clause is narrow: a refund may be requested within three (3) calendar days from the date of purchase, provided your word usage does not exceed 1,000 words. On the Basic plan that is 10 percent of a month's allowance, so testing the product properly and keeping the right to a refund are close to mutually exclusive.
The terms carry an effective date of 03/18/2024, while the site footer reads © 2026 AIHumanizer.ai. The legal text has not been revised in roughly two years of trading.
The homepage advertises 99.4% Avg Human Scores and the pricing page lists 100% undetectable writing as a feature on every tier including free. These are AIHumanizer.ai's own claims. We have not tested them, no independent verification is offered on the site, and we take no position on whether they hold.
One observable technical detail, offered as fact rather than interpretation: the site's static assets are served from a path prefixed /web-cdn/bypass/, and the page references logo images for Turnitin and Scribbr.
There are real reasons to stay, and pretending otherwise would be dishonest.
You write in a language other than English. This is the decisive one. AIHumanizer.ai lists over 50 languages. TextSight's detector is English only. If you work in Spanish, Mandarin, Japanese or anything else, our tool cannot give you a meaningful reading and theirs at least operates in your language. Nothing later in this page changes that.
You want an unlimited word allowance. The Unlimited tier removes both the monthly ceiling and the per request cap. If you are moving very large volumes of text, that is a straightforward fit.
You want rewriting with adjustable aggression. Three modes let you dial the intensity of the rewrite. We do not offer graded rewriting modes.
You want everything on one login. Their paid tiers bundle a built in AI detector alongside the rewriter. If a single tool covering both is what you are after, that is a genuine convenience.
A three day refund window is still a refund window. It is narrow and capped at 1,000 words, but TextSight does not advertise a refund policy at all. On that specific point they publish more protection than we do.
If you are shopping for a replacement bypass tool, TextSight is the wrong destination and we would rather say so on the first read than after you have paid.
AIHumanizer.ai sells evasion. We sell the detector. Our rewriting is aimed at making prose clearer and more specific, not at moving a number on someone else's classifier, and we publish no figures about how our output performs against third party detectors. That is a difference in what the product is for, not a feature we have yet to build.
Plenty of people searching for an alternative genuinely want the same thing from a different vendor. If that is you, this is the point to stop reading.
The remainder of the audience is the one that matters here: people who need to know what a document is, not to change what it looks like.
That covers editors reviewing freelance submissions, hiring managers reading take home assignments, course leaders handling student work, and content teams auditing what an agency delivered. In each case the deliverable is a judgement plus something you can put in a file, and no amount of rewriting produces either.
It also covers writers using a detector diagnostically. Run your own draft, look at which sentences drive the score, and decide whether you have a detectability problem or simply a dull paragraph. In our experience it is usually the second.
The paste box works without an account. Anonymous use allows three checks a day, pooled across the AI Detector and the Document Detector, with each check capped at 1,000 words. Creating a free account moves that to 60 checks a day at 5,000 words per check, and every scan you run signed in is saved to Scan History, including on the free plan. Starter gives 200 checks a day, and Pro and above are unlimited. Anything under 25 words is too short to score.
Results fall into three bands. Below 30 reads as likely human-written, 30 to 69 as mixed signals, and 70 or higher as likely AI-generated.
A caveat we state plainly. The detector is an English only ensemble combining DeBERTa, RoBERTa and ELECTRA, and it has a known false positive bias against writers who learned English as a second language. If you are assessing ESL writers, a high score is a reason to investigate, never a conclusion on its own. Anyone selling you a detector without mentioning this is not being straight with you.
Annual billing runs 25 percent below monthly.
| Plan | Monthly | Annual | What it adds |
|---|---|---|---|
| Starter | $9.99 | $7.49 | Sentence level analysis, PDF export, 200 scans daily |
| Pro | $19.99 | $14.99 | Unlimited scans, Chrome extension, REST API |
| Business | $39.99 | $29.99 | Team accounts, branded reports |
| Enterprise | $79.99 | $59.99 | Same capabilities at organisational scale |
File upload, URL scanning and bulk scanning are available across the paid tiers.
Comparing headline prices, Starter at $9.99 monthly sits below AIHumanizer.ai's Basic at $19.99, but the two are not priced for the same job. Theirs buys rewriting volume, ours buys scanning capacity and reporting.
Stay with AIHumanizer.ai if you need multilingual rewriting, high word volume, or graded rewriting modes. Come to TextSight if what you actually needed was a defensible reading of an English document and a report you can hand to a colleague. Those are different products that happen to appear in the same search results.
aihumanizer.ai homepage: product description, detector names targeted, mode names, language count, unregistered and registered free allowances, 99.4% Avg Human Scores claim, footer and copyright line. HTTP 200. Checked 16 August 2026.aihumanizer.ai/pricing: all four tiers with monthly and yearly prices, monthly word allowances, per input caps, and the feature list including 100% undetectable writing. HTTP 200. Checked 16 August 2026.aihumanizer.ai/terms-of-service: operator name, US jurisdiction statement, three day and 1,000 word refund clause, effective date 03/18/2024. Checked 16 August 2026.The deeper head-to-head: feature table, where GPTZero wins, where TextSight wins, and migration steps.
Read the comparePerplexity, burstiness, and transformer scoring explained, so you can read any detector's verdict critically.
Read the guideWhy detectors over-flag ESL and formal writing, and how sentence-level evidence helps you defend real work.
Read the guideThe full ranking with detection approach, pricing, and use-case fit side by side.
See the rankingStart with TextSight's free tier. No card, no signup, no commitment. Your first scan in about six seconds, with the evidence shown line by line.
Honest comparisons vs other tools.