Stealthwriter

Stealthwriter

StealthWriter is a web-based AI text humanizer and detector that rewrites AI-generated content to read naturally human, with sentence-level analysis and a built-in detector to verify results.

Stealthwriter is copywriting software teams evaluate for copywriting. Use this page to review pricing, integration signals, and the best alternatives before you commit.

Free
#104 in Copywriting (104 tools)
Added 5 months ago
Data reviewed Jul 16, 2026

Profile facts come from the vendor source. AiMatch labels unknown pricing or API details instead of estimating them.

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Quick Overview

Best for: Copywriting

What it does

Copywriting software for decision-makers comparing workflow fit and alternatives.

Best fit

Copywriting

Pricing snapshot

Free from $0/mo

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Stealthwriter

StealthWriter is an online tool that humanizes AI-generated text and detects AI-written sentences. It provides an AI Humanizer that rewrites content to read naturally with selectable rewrite intensities (light, medium, aggressive), and an AI Detector that highlights sentences flagged as AI-generated. The product is aimed at anyone who uses AI for writing — including students, bloggers, marketers, copywriters, researchers, and professionals — and emphasizes fast processing, sentence-level feedback, and privacy (text is not stored after processing).

StealthWriter is a web-based AI text humanizer and detector that rewrites AI-generated content to read naturally human, with sentence-level analysis and a built-in detector to verify results.

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Key Features

AI Humanizer

Rewrites AI-generated text into natural, human-sounding prose with selectable rewrite levels: light, medium, or aggressive.

AI Detector

Scans text to show how likely it is to be flagged as AI-generated, including sentence-by-sentence highlights.

Deep Scan

Performs sentence-level analysis with color-coded highlights showing exactly which sentences are flagged.

Alternative Rewrites

Provides multiple alternative rewrites per sentence so users can click to choose alternatives and fine-tune voice.

Fast Processing

Built for speed to return humanized text in seconds, designed for quick turnaround at scale.

Built-in Verification

Includes a detector to verify results before and after humanizing so users can see the score change.

Privacy Controls

The site states submitted text is not stored, shared, or used for training after processing completes.

Pricing

Free Tier Available

Free plan: $0/month, 10 humanizations/day, 10 AI scans/day, 1,000 words per input; no credit card required.

Free

$0/mo
  • 10 humanizations/day
  • 10 AI scans/day
  • 1,000 words per input

Starter

$20/mo (or $200/year)
  • 50 humanizations/day
  • 50 AI scans/day
  • 5,000 words per input

Plus

$50/mo (or $500/year)
  • 150 humanizations/day
  • 150 AI scans/day
  • 5,000 words per input

Pro

$100/mo (or $1,000/year)
  • 350 humanizations/day
  • 350 AI scans/day
  • 5,000 words per input

Scale

$400/mo (or $4,000/year)
  • 2,000 humanizations/day
  • 5,000 words per input

Use Cases

Humanize AI-generated content for publishing

Rewrite drafts from models like ChatGPT, Claude, or Gemini so they read naturally for blog posts, articles, and marketing copy.

Pre-publish verification

Scan text before and after humanizing to verify it no longer appears AI-generated using the built-in detector.

Sentence-level editing and voice tuning

Use alternative rewrites and sentence-level highlights to fine-tune tone, rhythm, and flow to match the user's voice.

Academic and professional writing workflows

Support students, researchers, and professionals who want AI-assisted drafts rewritten into original, publication-ready prose.

Integrations

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Benefits

Transforms AI output into natural, human-sounding writing with selectable rewrite intensity.
Built-in detector provides before-and-after verification so users can confirm the humanization effect.
Original rewrites to avoid plagiarism flags (the site states output is unique to the input).
Maintains user privacy by not storing or sharing submitted text after processing.
Quick turnaround — humanized text is returned in seconds.

Limitations

Daily usage limits on all plans (e.g., Free plan limited to 10 humanizations/day).
Per-input word limits differ by plan (Free: 1,000 words; paid plans: 5,000 words per input).

Frequently Asked Questions

What is StealthWriter?
StealthWriter is an AI text humanizer and detector that takes AI-generated content from tools like ChatGPT, Claude, or Gemini and rewrites it so it reads as naturally human-written.
Who is StealthWriter for?
Anyone who uses AI to write — students, bloggers, marketers, copywriters, researchers, and professionals.
Does it actually work? Will my text be humanized?
Yes. StealthWriter is specifically designed to produce human-quality writing and includes a built-in detector to verify results before and after humanizing.
Will my humanized text be flagged as plagiarism?
No. StealthWriter generates original rewrites — it doesn't copy from existing sources; the output is unique to your input.
Is my text stored or shared with anyone?
No. Text you submit is not stored after processing, is not shared with third parties, and is not used for training.
What if AI detectors get updated — will StealthWriter still work?
Yes. StealthWriter is continuously updated to ensure humanized content stays natural and high-quality as writing standards evolve.
How is StealthWriter different from other AI humanizers?
StealthWriter emphasizes clean, natural output in under 10 seconds with a built-in detector, sentence-level fine-tuning, and multiple rewrite levels.
Is there a free plan?
Yes. The free plan includes limited daily usage and standard input length; no credit card is required.
What plans are available?
Plans include Free ($0), Starter ($20/mo or $200/yr), Plus ($50/mo or $500/yr), Pro ($100/mo or $1,000/yr), and Scale ($400/mo or $4,000/yr) with varying daily humanizations and scan limits.

Getting Started

  1. 1 Sign up for a free account (no credit card required) or sign in if you already have an account.
  2. 2 Paste or upload your AI-generated text into the input area (supports up to plan-specific word limits).
  3. 3 Choose a rewrite level (light, medium, aggressive) and run the humanizer; optionally scan before and after with the detector.
  4. 4 Click sentence-level alternatives to fine-tune the output, then copy or export your humanized text.

Support

email

Support via email at [email protected].

phone

Phone support: +1 (307) 998-3768, Monday–Friday, 9:00 AM–5:00 PM Mountain Time.

docs

FAQ and changelog available on the site for self-service help.

API

Available: No

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