Overview

StealthWriter is a browser-based service for rewriting AI-assisted text and estimating whether text may be flagged as AI-generated. It best suits writers and marketers refining drafts who want rewrite controls and detector feedback together. Its main strength is that combination; its main caution is that rewritten wording can alter details or claims, so it needs editorial review.

Its humanizer offers light, medium, and aggressive rewrite levels, while the detector gives an overall estimate and sentence-level feedback. The detector can point to passages to revisit, but it is an estimate rather than a guarantee of how another system will assess the text. The public demo accepts up to 500 words per scan, recommends at least 100, and applies daily limits.

StealthWriter says it works with text from ChatGPT, Claude, Gemini, Llama, Mistral, Copilot, and Jasper, among others. Supported languages include Spanish, French, German, Italian, Portuguese, and Dutch. Its acceptable-use policy prohibits misrepresenting authorship or using the service to bypass AI-detection, plagiarism, academic, workplace, or platform review.

Key features

Adjustable rewriting: Light, medium, and aggressive levels suit different degrees of revision. The choice is useful for polishing phrasing, but more substantial changes make checking meaning and factual details particularly important.
Detection feedback: Overall and sentence-level estimates can help users identify text to reconsider. They should inform an editing decision, not stand in for one.
Model options: Free users get Ghost 5.2 Mini. Paid plans add Ghost 5.2 Pro and Ghost Legacy, giving subscribers additional model choices.
Privacy and security: Submitted text is assessed by a moderation tool, then processed or rejected; it is not stored or used to train models. It may be shared with infrastructure providers needed to run the feature. The privacy policy describes encryption in transit and at rest, access controls, regular security and vulnerability assessments, and employee data-protection training; it also says the company complies with GDPR, CCPA, and other relevant regulations.

Support is available by email and phone Monday through Friday, 9:00 AM–5:00 PM Mountain Time, with a typical response within 24 business hours.

Pricing

The free plan is free and includes 10 humanizations and 10 AI scans per day, a 1,000-word input limit, and Ghost 5.2 Mini. That is a practical way to try the core workflow, but the daily quotas and shorter input cap make it less suitable for heavier use.

Starter costs 20.00 USD per month (billed $20 USD/mo) and raises the daily quotas to 50 humanizations and 50 scans, with a 5,000-word input limit and all three models. It is the entry paid tier for regular individual use. Plus costs 50.00 USD per month (billed $50 USD/mo) for 150 of each daily operation; Pro costs 100.00 USD per month (billed $100 USD/mo) for 350. These tiers retain the same input limit and model set, so their practical distinction is daily volume.

Business costs 200.00 USD per month (billed $200 USD/mo) for 800 humanizations and scans per day, a 5,000-word input limit, and priority team support. Scale costs 400.00 USD per month (billed $400 USD/mo) for 2,000 of each per day, with the same input limit and priority team support. They suit higher-volume workflows; the stated plan benefits do not describe different input limits. Enterprise has custom pricing and a 5,000-word input limit.

There is no public API, so the service is a poor fit for teams that need to integrate rewriting into another product or automated workflow.

Platforms

StealthWriter runs as a web app in modern browsers on desktop, tablet, and mobile; no download or extension is required. Android and iOS are supported through this browser-based service, rather than a required native-app installation.

Who it's for

Writers, marketers, and other professionals seeking clearer phrasing in AI-assisted drafts are the natural audience. It is also useful to people who want sentence-level detector feedback alongside rewriting. It is not the right choice for anyone seeking to disguise authorship or evade review, uses its policy expressly prohibits.

Pros and cons

Pro: Rewriting controls and sentence-level detection feedback sit in one service, helping users move from an estimate to targeted editing.
Pro: The free tier provides daily access to both humanization and scans, with no paid commitment required to try the workflow.
Con: Free inputs are capped at 1,000 words and paid inputs at 5,000, which constrains longer documents to smaller pieces.
Con: Rewriting can shift details or claims, so output requires review rather than direct reuse.
Con: There is no public API or extension, limiting integration and users who want an add-on workflow.

Alternatives

For lighter use or different platform needs, compare WriteHuman, HumanizeAI.io, Humanizer, Rephrasy, The AI Humanizer, Humanize AI, Humbot, and StealthGPT. WriteHuman's free plan allows three humanizer requests a month, 250 words per request, and 10 detection checks, and it supports an API and extension. HumanizeAI.io offers unlimited free words overall, though requests have limited words and free requests without signup return tomorrow. Humanizer's free offer is one 150-word humanization without sign-up. Rephrasy's Growth plan is 8.25 USD per month, billed $99 yearly, for 100 monthly humanizations of up to 2,000 words each, plus a Chrome extension and one custom writing style. The AI Humanizer's free tier provides 500 words per day. Humanize AI's free plan gives 1,500 words per month and 300 words per check. Humbot's Basic plan costs 7.99 USD per year, billed annually, and includes 3,000 basic words and 1,000 advanced words per month with a 500-word input limit. StealthGPT offers a pay-as-you-go Super plan at 0.05 USD per once, billed $0.05 per 100 words, with no subscription.

For broader comparisons, browse AI Text Humanizers, AI Paraphrasing Tools, and AI writing assistants.

Verdict

StealthWriter is a sensible choice for writers and marketers who want adjustable AI-draft rewriting and detector feedback in a browser, with a free tier that makes occasional use possible. Choose a paid plan when its daily quotas and model options justify the monthly cost; look elsewhere if you need an API, longer inputs, or rewriting without the need to scrutinize changes in meaning.

	StealthWriter	Word Model
Free plan	Yes
Free trial		Yes
Paid from	$20/mo
Platforms	Android, iOS, Web	macOS, Web, Windows
Free plan	Yes	No
Included word limit	5,000 words/mo
Paid from	20 /mo
Word limit	5,000 words
Tone controls	Yes
API access	No
Monthly word limit	5,000 words/mo
Brand voice controls		Yes
Desktop app		No

StealthWriter vs Word Model

StealthWriter

Word Model