TL;DR: Undetectable AI is the category veteran — 24M+ users, a money-back guarantee and a deep tool ecosystem. Pick it if you want an established brand with enterprise extras. Pick Better Humanizer if you're a student or budget-conscious writer who wants to test a humanizer properly before paying: 1,500 free words per run, unlimited free detection, no login — and 3× the words at the same $9.99 entry price.
| Feature | Better Humanizer | Undetectable AI |
|---|---|---|
| Free humanizing | 1,500 words per run, no signup | 250-word trial, account required |
| Free AI detection | Unlimited, no login | 250-word trial; unlimited detection on paid plans |
| Before/after score card | Yes — shown free on every run | Detection scores in-tool; no before/after card |
| Citation Lock | Yes — quotes and references untouched | Writing-level matching instead |
| Entry paid plan | $9.99/mo — 30,000 words/month | $9.99/mo — 10,000 words/month |
| Mid plan | $19.99/mo — 100,000 words/month | $19/mo — 20,000 words/month |
| Student pass | Semester Pass $49 — 4 months of Pro | Not offered |
| Business features | — | API, white-labeling, non-expiring credits |
| Refund policy | Test everything free before you pay | Money-back if output is flagged as AI |
All figures are monthly billing — both brands discount on annual plans.
Credit where it's due — there are real reasons it leads this market.
If your humanized text still gets flagged as AI, they'll refund you. It's the strongest trust hook in this industry, and we don't currently match it. Our answer is “verify everything free before you pay” — but a guarantee is a guarantee.
24M+ users, support for 50+ languages, and press coverage from Forbes to the BBC. If you need a tool your school or client has actually heard of, Undetectable AI has spent years earning that recognition.
A Chrome extension that works inside Google Docs and Gmail, an API, AI detection for images, audio and PDFs, a Human Auto Typer, an AI job-application tool, and writing-level matching so rewrites don't sound suspiciously polished.
Their free trial is 250 words — roughly one paragraph, behind an account. We humanize 1,500 words per run with no signup, and our AI detector is unlimited and free. You can push a full essay through the check → humanize → re-check loop before you spend a cent.
At $9.99/month you get 30,000 words; their $9.99 gets 10,000. Our $19.99 Pro includes 100,000 words a month; their $19 plan covers 20,000, and it takes $42.50/month to reach 50,000.
Every run ends with a before/after AI score card, and Citation Lock keeps quotes and references exactly as you wrote them — useful when the bibliography is half the grade. You watch the score drop in real time, not after you've paid.
Writing-suite giant vs a focused detect-and-verify loop.
The two best free tiers in the category, compared honestly.
A focused loop vs a 13-tool study bundle.
How each major detector scores text — and what works against it.
For the core detect → humanize → verify loop, yes: a much larger free tier (1,500 words per run vs a 250-word trial), unlimited free detection with no login, and 3× the words at the same $9.99 entry price. What you give up is their ecosystem — Chrome extension, API, image and audio detectors — and their money-back guarantee.
The entry price is identical: $9.99 per month on monthly billing. But Better Humanizer includes 30,000 words per month versus their 10,000, and Pro at $19.99 includes 100,000 words versus their $19 plan's 20,000. Undetectable AI bills cheaper on annual plans and adds a business tier we don't have.
Yes — their money-back guarantee covers humanized output that gets flagged as AI, and it's the strongest purchase protection in the category. Our approach works from the opposite direction: the free tier is big enough that you've already verified results before you pay anything.
Yes. Detection is unlimited, free and needs no login; humanizing works up to 1,500 words per run without signup. Create an account only when you need higher limits, like the 5,000-word runs on Pro.
Paste up to 1,500 words, humanize, and watch the score card — no login, no credit card.
Try Better Humanizer free