StealthGPT is an AI writing and humanizing tool built around one specific promise: taking ChatGPT, Claude, or Gemini output and rewriting it to pass AI detection. That's a crowded promise in this category, and it's exactly the kind of claim worth testing yourself rather than taking on faith. Here's the honest framework we apply to every tool in this space, ours included.
What StealthGPT is going for
Beyond the humanizer, StealthGPT has expanded into a broader toolkit: content generation, a built-in AI detector, and SEO-writing features. The humanizer is the core pitch, and like every tool in this category it's competing against detectors that update continuously. No tool, StealthGPT or otherwise, can honestly guarantee a result that holds indefinitely, because the detectors it's trying to beat are actively retrained against exactly this kind of tool.
What else does StealthGPT include besides the humanizer?
StealthGPT is not only a rewriter, which is the main reason it holds standalone brand demand while thinner humanizer sites do not. Its own homepage on 2026-08-28 listed the humanizer alongside an AI detector, a Stealth Writer feature that generates essays with citations, a Stealth Agent flow that researches, drafts and polishes in one pass, and an SEO writer aimed at keyword led articles. Around those sit a Chrome extension the site describes as version 3.0 with a Human Typing feature, a PDF chat tool, a photo to answers feature, and API access with MCP integration. Whether that breadth earns its price depends on whether you want a generator or a rewriter, because paying for a generation suite when you only need a rewrite pass is the most common way people overspend here.
What does StealthGPT cost in 2026?
An honest answer here is a limit rather than a number. StealthGPT's own pricing page could not be loaded on 2026-08-28, returning rate limit errors to automated requests, and another reviewer reports the same blocking. The readable third party sources contradict each other. The Capterra listing on that date showed four flat rate monthly plans: Pro at 30.00 dollars, Essential at 34.50, Business at 100.50 and Enterprise at 499.50, with a free version and no free trial. A review published in February 2026 and updated in July 2026 listed roughly 24.99 dollars for Essential, 34.99 for Pro, 49.99 for Business and 249.99 for Enterprise, and said the older 14.99 to 17.99 dollar plans had been retired. A third writeup put the entry tier in the mid teens. Those cannot all be current, and the disagreement is the finding: open the pricing page yourself in a logged out window before entering a card.
What do StealthGPT's plan limits actually cap?
The caps matter more than the price. A review updated in June 2026 describes the tiers as request budgets rather than word budgets: Essential at 50 requests a day with 1,000 words per request, Pro at 100 a day with 1,500 words and 3 seats, Business at 500 a day with 2,000 words and 5 seats, and Enterprise with unlimited requests at 20,000 words and 10 seats. StealthGPT's own homepage separately states Enterprise humanizations accept up to 20,000 words, raised from a previous 3,000 word cap, which fits that structure. So an unlimited label refers to the monthly total, not to one submission. A 4,000 word essay on a lower tier has to be split and rejoined by hand, and every seam is a place where the rewrite's rhythm resets. These per tier figures are third party and could not be confirmed on the vendor site on 2026-08-28.
Why does a built in detector not settle anything?
StealthGPT ships its own AI checker, described by third party reviews as scanning around 200 words per check on the free tool. A detector sold by the company that sells the humanizer has an obvious incentive to score that humanizer well, and even in complete good faith it is tuned by the same team against the same assumptions about what reads as human. A green score from it is a smoke test, not a verdict. The check that counts is against a detector you do not control, ideally the one your school or publisher actually runs.
What is the Samurai engine, and is the add on worth it?
StealthGPT markets two rewrite engines, a standard one and a premium one branded Samurai, positioned in its marketing as more natural and as the better bet against Turnitin. That is a vendor claim, not a published result. Third party reviews describe Samurai as a paid add on of roughly 5 dollars a month unless you are on a higher tier, a figure that could not be confirmed on the vendor pricing page on 2026-08-28 for the same rate limiting reason. One reviewer who ran both engines in June 2026 reported the difference between them was not dramatic on detector outcomes. That is one person's test on their own text, which is exactly why it is worth reproducing on yours before adding the charge.
How should you evaluate StealthGPT before paying for it?
We have not run a controlled bypass test on StealthGPT and we do not publish bypass percentages for other people's tools, because a percentage measured on one detector version, one text and one day does not transfer to yours. A routine does transfer. Confirm the current price on the vendor's own page in a logged out window, since the listings contradict each other. Check the per request word cap against the real length of your document, not the headline allowance. Run a paragraph you would genuinely submit, then read the output aloud to see whether your argument survived. Score it in at least two detectors StealthGPT does not own. The longer checklist is in our honest guide to choosing a humanizer, and you can run your half of the comparison in our free AI humanizer and check it in our free AI detector without entering a card.
Frequently asked questions
Is StealthGPT free to use?
The sources disagree. The Capterra listing checked on 2026-08-28 records a free version and explicitly no free trial. A review updated in June 2026 describes free access as roughly one request per tool every seven days, enough to see the interface and not to judge output. A review updated in July 2026 says there is no test period at all. StealthGPT's own pricing page could not be loaded for verification on that date.
How much does StealthGPT cost per month?
It could not be confirmed on the vendor's own site on 2026-08-28, which returned rate limit errors to automated checks. On that date the Capterra listing showed Pro at 30.00 dollars, Essential at 34.50, Business at 100.50 and Enterprise at 499.50 flat rate per month, while a review updated in July 2026 listed roughly 24.99 to 249.99 dollars across the same four tier names.
How many words can StealthGPT humanize at once?
It depends on the tier, and the cap is per request rather than per month. StealthGPT's site states Enterprise humanizations accept up to 20,000 words, raised from a previous 3,000. A review updated in June 2026 puts the lower tiers at 1,000 to 2,000 words per request with daily request limits on top, so long documents must be processed in pieces below Enterprise.
Does StealthGPT's Samurai engine beat Turnitin?
StealthGPT points Samurai at Turnitin in its marketing, which is a claim rather than a published test. One reviewer who compared both engines in June 2026 reported no dramatic difference in detector outcomes, and Turnitin updates its detection on its own schedule, so no engine carries a guarantee that holds. The wider reliability picture is in are AI detectors accurate.
How should you judge StealthGPT against the alternatives?
Judge it the way you would judge any tool in this category, on your own text rather than on marketing copy. The failure modes that make a humanizer useless are the same across products, and they are set out in why AI humanizers do not work. If your specific concern is academic submission, the narrower question is covered in the best AI humanizer for Turnitin, and the limits of the scores you will be reading are in are AI detectors accurate.
To run the comparison yourself, put one paragraph you would actually submit through StealthGPT and through our free AI humanizer, then score both with an independent AI detector. Read them aloud too, because a tool that lowers a score while flattening your argument has optimised for the wrong thing.
