StealthWriter and WriteHuman are both AI humanizer tools. They take text written by ChatGPT or another AI model and rewrite it to read more like a person wrote it, and both include an AI detector to check the result. The differences are in how they limit usage, what extras they include and how they price. I checked both pricing pages on 27 October 2026. I have not run either tool against Turnitin, GPTZero or any other detector, so the bypass claims here are the vendors’ own.
A quick note on undetectable AI claims
Detectors and humanizers keep changing, so no tool can promise to stay undetectable. Detectors can also wrongly flag human writing. If you’re a student, using a humanizer to submit AI-written work as your own is likely to break your institution’s rules regardless of the detection score. These tools make more sense for polishing your own drafts or AI-assisted business writing where that is allowed.
StealthWriter overview
StealthWriter limits use per day:
- Free: 10 humanizations and 10 AI scans a day, 1,000 words per input, Ghost 5.2 Mini model.
- Starter, $20 a month: 50 a day, 5,000 words per input, Ghost 5.2 Pro and Legacy models.
- Plus, $50: 150 a day. Pro, $100: 350 a day. Business, $200: 800 a day.
Every plan includes the humanizer, AI detector versions 1 and 2 and an AI deep scan. Yearly billing saves 17%.
WriteHuman overview
WriteHuman limits use per month by number of requests:
- Free: 3 requests a month, 250 words per request, 1 output variation, 10 detection checks and 10 image scans.
- Basic, $20 a month or $12 billed yearly: 80 requests, 600 words per request, 2 output variations.
- Pro, $29 a month or $19 yearly: 200 requests, 1,200 words, 3 variations.
- Ultra, $59 a month or $39 yearly: unlimited requests, 3,000 words, 5 variations, MCP access up to 1,000 a month.
Every plan includes the humanizer, AI detector and an image detector, and WriteHuman also sells a separate word-based API for developers covering 40+ languages.
AI humanizer feature comparison
The biggest practical difference is input size. StealthWriter allows 5,000 words per input on every paid plan, so a long essay or report can go through in one go. WriteHuman’s Basic plan caps each request at 600 words and Pro at 1,200, which means splitting longer pieces.
WriteHuman’s advantage is output variations. Getting two, three or five rewrites of the same text lets you pick the version that reads best, which may matter more than any detector score. It also adds an image detector and an API, which StealthWriter’s pricing page does not list.
StealthWriter lets paid users choose between its Ghost models, and its detector includes a deep scan. WriteHuman mentions an enhanced model on paid plans but does not name versions on its pricing page.
Pricing comparison
| Tier | StealthWriter | WriteHuman |
|---|---|---|
| Free | 10 a day, 1,000 words per input | 3 a month, 250 words per request |
| Entry | Starter $20/month: 50 a day, 5,000 words | Basic $20/month ($12 yearly): 80 a month, 600 words |
| Middle | Plus $50/month: 150 a day | Pro $29/month ($19 yearly): 200 a month, 1,200 words |
| Heavy | Pro $100 or Business $200 a month | Ultra $59/month ($39 yearly): unlimited, 3,000 words |
At the same $20 monthly price, StealthWriter Starter allows far more text: 50 inputs a day of up to 5,000 words, against 80 requests a month of up to 600 words on WriteHuman Basic. On yearly billing WriteHuman Basic drops to $12 a month, which is cheaper if you only need a few short pieces. For unlimited use, WriteHuman Ultra at $39 a month billed yearly is cheaper than StealthWriter’s higher tiers, though with a 3,000 word cap per request.
Turnitin, GPTZero and detector bypass claims
Both tools are marketed on bypassing detectors. Neither publishes an independent test with a method you can check, so I would treat any pass rate or score as marketing. The sensible approach is to try each on your own writing using the free plans, then check the output in the detector you actually care about and read it carefully. A version that scores well but loses your meaning is not worth using.
Writing quality, what to check when you humanize text
The point of a humanizer should be natural text that a human reader is happy with, rather than a better number from AI detectors. When you review the output from either tool, check a few things:
- Facts, names and figures are unchanged.
- Sentences still say what you meant, with no odd synonyms swapped in.
- The tone fits the audience (a client email should not read like an essay).
- Paragraphs still flow, with no repeated or dropped points.
WriteHuman’s output variations help here, because you can compare versions and keep the best one. With StealthWriter you would re-run the text or switch between its Ghost models. Either way, a writer still needs to read and edit the result before it goes anywhere.
Pros and cons
StealthWriter
- Pro: a useful free plan with 10 humanizations a day.
- Pro: 5,000 words per input on paid plans.
- Con: daily limits don’t carry over.
- Con: no API or image detector listed.
WriteHuman
- Pro: multiple output variations per request.
- Pro: cheap yearly pricing, an image detector, MCP and an API.
- Con: small free allowance (3 requests a month).
- Con: low word caps per request on Basic and Pro.
Verdict, which is the better alternative?
I would pick StealthWriter if you work with long documents or humanize something most days. Its free plan is also the better way to try a humanizer properly. I would pick WriteHuman if your pieces are short (emails, posts, short articles), you like choosing between several rewrites, or you want an API or MCP access at a low yearly price.
Other tools to compare
- Undetectable AI: word-based plans from $9.99 a month with a refund if output is flagged.
- StealthGPT: monthly word pools, team seats and MCP access.
- Rephrasy: yearly plans, a 24 hour pass and a lifetime deal.
