The Undetectable AI alternative that doesn't meter your words.
$4.99 a month humanizes 25,000 words here. The same $9.99 that starts Undetectable AI's monthly plans covers 10,000 words there. Check any text free below, no signup, then compare rewrites on your own draft.
Free AI detection · no signup · humanizing plans from $4.99/mo
- 25,000 words for $4.99/mo
- Free unlimited AI detection included
- Faithful rewrites with keyword freeze
Why look for an Undetectable AI alternative?
Price per word, mostly. Undetectable AI's published monthly plans run about $85 to $100 per 100,000 words; Humanized by AI runs $13 to $20 per 100,000. If you humanize more than a couple of essays a month, that gap is the whole decision. The rest of the case: free unlimited detection, meaning-preserving rewrites, and no ads.
The Per-Word Math, Side by Side
Humanizer pricing hides in word caps, so put everything in the same unit: what does 100,000 humanized words cost? These are published monthly-billing numbers.
| Tool | Plan | Price | Words / month | Cost per 100K words |
|---|---|---|---|---|
| Humanized by AI | Starter | $4.99/mo | 25,000 | $19.96 |
| Humanized by AI | Pro | $19.99/mo | 150,000 | $13.33 |
| Undetectable AI | 10K | $9.99/mo | 10,000 | ~$100 |
| Undetectable AI | 20K | $19.00/mo | 20,000 | ~$95 |
| Undetectable AI | 50K | $42.50/mo | 50,000 | ~$85 |
Monthly billing, from each tool's published pricing as of July 2026. Plans change; always confirm current numbers on the vendor's site.
Their annual billing halves those prices, which still lands around $50 per 100,000 words, ten times ours, with a year's commitment attached. Same-quality output at a tenth to a twentieth of the price is the claim; the free detector below the fold is how you check the quality half yourself.
Beyond Price: What Each Tool Is Built Around
| Humanized by AI | Undetectable AI | |
|---|---|---|
| Free tier | Unlimited AI detection, no account, 50K characters per check | 250-word humanizer trial |
| Verification | Built-in detector, free; before/after score on every rewrite | Detection offered alongside the humanizer |
| Meaning preservation | Faithful rewriting with keyword freeze for exact phrases | Multiple rewrite modes; aggressiveness varies by mode |
| Your text | Detection checks deleted after scoring; no ads on the site | Review their retention policy |
| Breadth | Humanize, paraphrase, grammar in one editor | Larger suite of adjacent tools |
Fair credit where due: Undetectable AI built the category's biggest brand and ships more adjacent features than we do. If you need that breadth, it may earn its price. If you need words humanized well and verified honestly, that's the job we built for, and it's the job where the per-word math matters most.
How to Run the Comparison Yourself
Take one real draft you care about, not a test paragraph. Humanize it in both tools. Paste both outputs into the free detector here for independent scores, then read both out loud and check three things: did the facts survive, does it sound like a person, and would you put your name on it. Twenty minutes, zero dollars, and you'll know which subscription deserves the next twelve months.
Undetectable AI Alternative FAQ
What is a good alternative to Undetectable AI?
Humanized by AI does the same job for a fraction of the per-word price: $4.99 a month covers 25,000 humanized words, where Undetectable AI's published monthly plans start at $9.99 for 10,000 words. Detection is free and unlimited here with no signup, and rewrites keep your meaning, with keyword freeze for exact phrases.
How much cheaper is Humanized by AI than Undetectable AI?
Per their published pricing as of July 2026: their monthly plans work out to roughly $85 to $100 per 100,000 words, and about $50 per 100,000 on annual billing. Ours is $19.96 per 100,000 words on Starter, or $13.33 on Pro. That's roughly four to seven times more words per dollar on monthly billing, on plans you can cancel in one click.
Is Undetectable AI worth it?
It's the biggest brand in the category with a broad feature suite, and plenty of people use it happily. Whether it's worth it depends on your volume: at typical blog or essay volumes, the per-word difference adds up fast. Run the same draft through both, compare quality and detector scores, and let the math decide.
Can I test the quality difference before paying?
Yes, and you should. Humanize a draft anywhere, paste the output into our free detector for an independent score, and read it aloud for quality. Our detection side is free and unlimited with no account, so the comparison costs nothing.
Does the cheaper price mean worse rewrites?
No. The price difference comes from infrastructure, not effort: we run our own models and our own detector rather than paying per-call markups. The rewrite is faithful by design, keeps your facts and frozen terms, and shows you a before-and-after detector score so quality is measurable, not claimed.
25,000 words for $4.99
Check your draft free first. If the rewrite earns your money, it costs a tenth of what you're paying now.