Shopping for an AI humanizer? Here are the popular ones side by side, using the numbers each company publishes on its own pricing page: entry price, monthly words, words per run and free trial terms. Each comparison also says where the other tool is the better fit.
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At a glance
Entry plan numbers from each company's public pricing page. Where we could not verify a detail, the cell points you to their site.
| Tool | Entry price | Monthly words | Words per run | Trying it |
|---|---|---|---|---|
| PureWrite | $9.99/mo, or $4.99/mo billed annually | 16,000 on Pro | 2,000 words on Pro, up to 10,000 | Free trial, no credit card |
| Undetectable AI | $9.99/mo, or $5.00/mo billed yearly | 10,000 on the entry plan | See their site | Free trial limited to 250 words |
| QuillBot | $8.33/mo billed annually | Full humanizer access on Premium | See their site | Free plan, humanize up to 125 words |
| StealthGPT | $29.99/mo ($1 for 3 days offer) | 50,000 on Pro | 1,000 words on Pro | $1 for 3 days, new users |
| WriteHuman | $12/mo billed yearly, $20 monthly | 80 requests on Basic | 600 words on Basic | Free plan, 3 requests a month |
| Walter Writes | $8/mo billed annually | 30,000 on Starter | 750 words on Starter | 300 words, no credit card |
| Humbot | $7.99/mo billed annually (Basic) | 3,000 Basic + 1,000 Advanced | 500 words on Basic | Free plan |
| GPTinf | $4.99/mo (Lite) | 5,000 on Lite | Files up to 5,000 words on Lite | Free preview, no signup |
| NaturalWrite | See their site | See their site | See their site | Free tier with signup |
Pricing checked October 2026; check their site for current prices.
Full comparisons
Well known humanizer with a money-back guarantee if output is flagged. PureWrite gives more words at the same $9.99 entry price.
Read the comparisonA full writing suite where the humanizer is one tool among many. PureWrite is a dedicated humanizer with the AI check built into every result.
Read the comparisonHigh volume plans (50,000+ words) with a Chrome extension and iOS app, from $29.99 a month. PureWrite costs less for lighter use.
Read the comparisonRequest based plans with 600 to 3,000 words per request and multiple output variations. PureWrite runs longer documents per pass.
Read the comparisonGenerous monthly word counts at a low annual price, 750 to 2,000 words per request. PureWrite runs longer documents in one pass.
Read the comparisonA humanizer bundled with many study tools and a 30-day money-back guarantee. PureWrite gives bigger runs and more words on the entry plan.
Read the comparisonLow priced word based plans with a free try and two click cancel. PureWrite adds a custom writing style and 50 output languages.
Read the comparisonA popular AI humanizer. We could not verify its current pricing, so the comparison sticks to what PureWrite offers and points you to their site for the rest.
Read the comparisonFAQ
It depends on how you write. If you need very high monthly volume, plans like StealthGPT Max or Walter Writes Elite include more words. If you work with long documents, look at the words allowed per run. If you want a money-back guarantee, Undetectable AI and Humbot list one. Run the same paragraph through two or three tools and keep the one whose output you prefer.
Among the plans we could verify, GPTinf Lite had the lowest month-to-month price at $4.99, and on annual billing PureWrite Pro is $4.99 a month for 16,000 words. Walter Writes Starter gives more words per dollar than PureWrite Pro. Pricing checked October 2026; check their site for current prices.
Many humanizers cap each request at 500 to 2,000 words, so a long essay has to be split into chunks and stitched back together. PureWrite takes up to 10,000 words in one run on the Unlimited plan, so a full paper goes through in one pass.
No tool can honestly promise a specific score on every detector, because detectors change constantly. PureWrite is built to reduce the patterns detectors flag and shows a built-in AI check on every result, so you can see how a draft reads before you use it.
Yes. The free trial needs no credit card. Paid plans start at $9.99 a month, or $4.99 a month billed annually, and cancel in 2 clicks from your dashboard.
Paste a paragraph into PureWrite, humanize it, and read the built-in AI check on the result. Pro is $9.99 a month, or $4.99 a month billed annually, for 16,000 words.
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All product names are trademarks of their respective owners and are not affiliated with PureWrite. Competitor details reflect their public pricing pages as checked in October 2026 and may have changed since.