The best Undetectable AI alternative for most people is one that charges for the words they actually use. Remove AI Tells scans text for AI tells for free with no word limit, gives you 3 free rewrites a day, and sells one-time word packs from $1.99 that never expire. Undetectable AI sells monthly and yearly plans. If you rewrite text in bursts, around deadlines, a one-time pack usually costs less than a month of a subscription.
Remove AI Tells vs Undetectable AI at a glance
| Remove AI Tells | Undetectable AI | |
|---|---|---|
| How you pay | One-time word packs | Monthly or yearly plans |
| Lowest price to start | $1.99 once for 2,500 words | $9.99 a month for 10,000 words a month, or $5 a month billed yearly ($60 up front) |
| Free tier | Unlimited scans, plus 3 rewrites a day of up to 300 words | A free trial limited to 250 words |
| Unused words | Never expire | A monthly allowance tied to your plan |
| Account needed | No, you get a credit code | Yes, to subscribe |
| Renews | Never | Until you cancel |
Undetectable AI prices are from its public pricing page as of September 25, 2026 and can change. Check undetectable.ai for current plans.
What it costs in real life
Say you have one 10,000 word paper to clean up this month. On Remove AI Tells that is the Student pack: $4.99, once, and any words you do not use stay on your code for next time. On Undetectable AI's smallest monthly plan that month costs $9.99, and it renews whether you use the words or not. Its yearly plan works out to $5 a month but asks for $60 up front.
The math flips for people who rewrite large volumes every single month. If that is you, a flat monthly plan can cost less per word. For everyone who writes in bursts, paying once is the cheaper and calmer way to do it.
When Undetectable AI may be the better fit
Undetectable AI is a bigger suite. Its plans include its AI detector, it is API compatible, and it sells business plans and other writing tools alongside its humanizer, so a team that wants one vendor for several jobs may prefer it. It also advertises a money-back guarantee if its output is flagged. If you need a large, steady monthly volume, its higher plans are built for that. Remove AI Tells does one job: it finds the tells, shows you a human score, and rewrites the text.
What Remove AI Tells checks
- Typography: em dashes, curly quotes, ellipsis characters and invisible characters that models leave behind.
- Vocabulary: the stock words and phrases models reach for, like delve, robust and "it is important to note".
- Rhythm: the flat, even sentence length that readers feel even when they cannot name it.
- Hidden prompts: instructions tucked into text in white or zero width characters. Most humanizers do not check for this.
The scan runs in your browser and scores how human the text reads before and after. Learn more in 16 Signs of AI Writing.
How to switch in two minutes
- Paste a draft into the tool above and click Scan for AI tells. It is free.
- Click Humanize for a free rewrite of up to 300 words.
- For longer work, pick a word pack. Your credit code shows up right after checkout.
- If you have a subscription elsewhere, cancel it before it renews.
Frequently Asked Questions
Is Remove AI Tells a good Undetectable AI alternative?
Yes, if you want to pay only for what you use. It scans for AI tells for free, rewrites up to 3,000 words at a time, and sells one-time word packs from $1.99 that never expire, with no subscription.
Is there a free Undetectable AI alternative?
Remove AI Tells has a free tier with no sign up: unlimited scans for AI tells and 3 free AI rewrites a day of up to 300 words each.
Will it pass Turnitin or GPTZero?
No tool can honestly promise that. Detectors disagree with each other and change often. Remove AI Tells clears the patterns detectors and readers look for, and the free scan lets you check the result before you use it.
Do I need to cancel anything with Remove AI Tells?
No. There is no subscription. Each pack is a single payment, and nothing renews.
Can I use it for school work?
Follow your school's rules. If AI help is not allowed on an assignment, do not use it for that work. Many students use it on their own writing that was flagged by mistake, or on drafts where AI assistance is allowed.