Head to head · Undetectable AI
Undetectable AI vs Undetected AI: which humanizer fits your workload?
The short answer
Undetectable AI and Undetected AI are separate products from separate companies, despite the near-identical names. Undetectable.ai is the more established brand with a bigger feature menu and a 250-word free trial. Undetected.ai gives you more words per dollar (15,000 vs 10,000 on the entry plans), an unlimited tier Undetectable.ai does not sell, and a live detection gauge that shows all five major detectors clearing before you copy.
Last updated July 2026 · Pricing read off each vendor's own page
Your text is never stored or used to train models.
Cleared. Reads 100% human.
Before · flagged as AI
After · reads human
Meaning kept · 5 detectors, one pass · Never stored or used for training
First, the confusion worth clearing up: Undetectable AI (undetectable.ai) and Undetected AI (undetected.ai) are two different tools from two different companies. If you meant to find the other one, no hard feelings. If you are comparing them on purpose, this page puts the real numbers side by side.
Both rewrite AI-generated text so it reads as human to detectors like GPTZero, Turnitin, Originality.ai, Copyleaks, and ZeroGPT. The differences that matter are words per dollar, what proof you get that the rewrite worked, and whether there is a ceiling on how much you can humanize in a month.
Verified pricing
Undetectable AI vs Undetected.ai pricing
Undetectable.ai prices read off undetectable.ai/pricing in July 2026. Plans change, so check their page for the latest.
| Plan level | Undetected.ai | Undetectable AI |
|---|---|---|
| Entry plan | Starter: 15,000 words/mo at $9/mo billed yearly ($12 monthly) | 10,000 words/mo at $5/mo billed yearly ($9.99 monthly) |
| Mid plan | Pro: 80,000 words/mo at $19/mo billed yearly ($24 monthly) | 20,000 words/mo at $9.50/mo billed yearly ($19 monthly) |
| Top plan | Unlimited words at $39/mo billed yearly ($48 monthly) | 35,000 words/mo at $15.75/mo billed yearly ($31 monthly); 50,000+ needs custom pricing |
| Free usage | No free tier; the on-page demo shows how the rewrite and gauge work | 250-word free trial |
| API | Via the Team plan (contact sales) | Advertised as compatible on paid plans |
Prices change and promos expire. Always confirm on each vendor's pricing page before buying.
Side by side
What each tool actually does
A fair look at where each one wins. Both are capable humanizers; the fit depends on your volume and workflow.
| What matters | Undetected.ai | Undetectable AI |
|---|---|---|
| Words per dollar, entry plan | 15,000 words for $9/mo yearly: 1,667 words per dollar | 10,000 words for $5/mo yearly: 2,000 per dollar, but the pool caps sooner |
| Heavy monthly volume | A true unlimited tier at $39/mo yearly | Tops out at 35,000 words/mo before custom pricing |
| Proof the rewrite worked | Live red-to-green gauge plus per-detector pass badges in the tool | Returns humanized text and a detection status |
| Detector coverage per pass | One rewrite tuned against GPTZero, Turnitin, Originality.ai, Copyleaks, ZeroGPT together | Markets broad multi-detector coverage |
| Extra tools | Focused on the humanizing job | Larger menu: detector, watermark tools, writing-level matching |
| Best suited for | Writers and teams with real monthly volume who want visible proof | Occasional users who want an established brand and a free trial |
Pricing: the entry plans are closer than they look
On headline price, Undetectable.ai wins: $5 a month billed yearly is about as cheap as this category gets. But the entry pool is 10,000 words, and a single humanized blog post can eat 1,200 of them. If you publish twice a week, you will hit that cap by the third week and be shopping for the next tier.
Undetected.ai's Starter plan costs $9 a month billed yearly and carries 15,000 words, and the jump to real volume is cheaper: 80,000 words for $19 versus $15.75 for 35,000. Past that, the math stops being close. Undetectable.ai sends 50,000+ word users to custom pricing; Undetected.ai sells unlimited words for a flat $39 a month billed yearly. For an agency or content team, a flat unlimited price is the difference between budgeting and negotiating.
Proof: a status message vs a gauge you watch
Both tools claim their rewrites clear the major detectors. The practical question is what you get to verify that before you paste the text somewhere it matters.
Undetectable.ai returns your humanized text with a detection status. Undetected.ai puts a live gauge on screen that moves from red to green as the rewrite completes, with a separate pass badge for each of the five major detectors. That does not change the rewrite quality by itself, but it changes your workflow: you stop copying output into GPTZero to double-check, because the check is already in front of you.
Where Undetectable AI is genuinely the better pick
An honest comparison cuts both ways. Undetectable.ai has been in the category longer, has a bigger public footprint, and bundles more side tools: an AI detector, watermark removal, writing-level matching. If you want one subscription that includes a detector you can run on other people's text, that bundle has real value.
The 250-word free trial also means you can test their output quality on your own writing before paying, which we think every buyer should do with every humanizer, including ours.
The honest split
Who should pick which
Pick Undetected.ai if
- You humanize more than about 10,000 words a month and do not want to ration a word pool
- You want per-detector proof on screen instead of re-checking output in GPTZero yourself
- You may grow into unlimited volume and want a flat price for it
Pick Undetectable AI if
- You humanize occasionally and the 10,000-word entry pool is genuinely enough
- You want a bundled AI detector and watermark tools in the same subscription
- You want to trial on 250 words before paying anything
No tool wins every workload. Test both on your own text before committing to a year.
Good questions
Undetectable AI vs Undetected.ai, answered
Keep comparing
More head-to-head comparisons
Try Undetected.ai on your own text
Paste your text, watch the detection gauge flip from red to green, and see meaning-preserving prose clear all five detectors before you copy.
Meaning kept · 5 detectors, one pass · Never stored or used for training