StealthWriter
StealthWriter is a web-based AI text humanizer and content detector that rewrites AI-generated writing to read naturally human, offering sentence-level analysis, multi-level rewriting, and fast processing for clean, fluent, publish-ready output in one click.
- Pricing:
- Free
Overview
StealthWriter is a web-based AI text humanizer and AI content detector developed by AiVantage LLC. It addresses a growing need among writers, marketers, and businesses to make AI-generated text indistinguishable from human writing. The tool rewrites machine-produced content so that it reads as naturally human — clean, fluent, and ready to publish in one click. By integrating both a rewriting engine and a detection system, StealthWriter provides a unified platform where users can analyze, transform, and validate their content without switching between different tools.
At the heart of StealthWriter is its AI Humanizer module, which rephrases AI-generated sentences with natural human phrasing. Users can select among three rewrite levels — light, medium, or aggressive — depending on how much transformation they want. This allows the tool to handle a range of use cases, from light polishing of AI output to full rewriting that removes any detectable patterns. The companion AI Detector performs a deep, sentence-by-sentence analysis using a color-coded display, showing exactly which sentences are flagged as likely AI-generated. This granular feedback is essential for understanding the strengths and weaknesses of a given text before and after humanization.
The platform is designed for efficiency and control. StealthWriter processes requests in seconds, making it feasible for high-volume workflows. Its unique alternative rewrite feature lets users click on any sentence in the humanized output and select from multiple variations, offering fine-grained control over tone, style, and voice. This is particularly useful for maintaining brand voice or adhering to specific editorial guidelines. Additionally, a recent update allows StealthWriter to remove the Claude watermark from AI-generated text, demonstrating its commitment to supporting a broad range of LLM outputs, including those from OpenAI, Anthropic, Google, and other model providers.
StealthWriter is built for a wide audience. Content creators, digital marketers, SEO professionals, academic writers, and social media managers can use it to ensure their AI-assisted content passes as human while remaining engaging and error-free. The product offers a free plan with 10 humanizations and 10 AI scans per day, as well as paid tiers — Starter, Plus, and Pro — that scale to 350 daily humanizations and 5,000 words per input. With its transparent pricing, fast processing, and robust feature set, StealthWriter serves as an end-to-end solution for making AI writing more human, more natural, and more ready for publication.
Core capabilities
- AI Text Humanizer
- Rewrites AI-generated text with natural human phrasing, offering light, medium, and aggressive rewrite levels to control transformation intensity.
- AI Content Detector
- Scans text before and after humanization to identify sentences likely flagged as AI-generated, with clear visual feedback.
- Deep Scan
- Performs sentence-by-sentence analysis with color-coded highlights, revealing exactly which parts of the text need attention.
- Alternative Rewrites
- Click any sentence in the output to view and select from multiple alternative phrasings for fine-tuned control over tone and style.
- Fast Processing
- Returns humanized text in seconds, designed for high-volume and at-scale content workflows.
- Human by Design
- Output is optimized to read as fully human, maintaining natural tone, rhythm, and flow.
- Claude Watermark Removal
- Supports removing the Claude watermark from AI-generated text, extending compatibility with various LLM outputs.
- Free Plan Available
- Includes 10 humanizations and 10 AI scans per day with up to 1,000 words per input, with no credit card required.
Use cases
- Making AI-generated blog posts and articles pass AI detection while remaining readable.
- Rewriting ChatGPT, Claude, or other LLM outputs to sound more human and natural.
- Checking whether a given piece of text will be flagged as AI-generated before publishing.
- Improving the flow, rhythm, and tone of AI-assisted newsletters, emails, and reports.
- Adapting AI-generated content to a specific brand voice using alternative rewrite suggestions.
- Preparing academic or professional documents that require a human writing style.
- Removing detectable AI patterns from content created by multiple language models.
Who it's for
Content creators and writers who use AI tools and need human-sounding output., Digital marketers and SEO specialists publishing AI-assisted content., Academic researchers and students who require natural language in papers and assignments., Social media managers and community managers producing high-volume posts., Bloggers and online publishers seeking to bypass AI detection while maintaining quality., Business professionals drafting emails, reports, and internal communications with AI assistance., Editors and content strategists who need to ensure brand voice consistency in AI-generated text.
Traffic analytics
stealthwriter.aiPricing
Free
Free
- 300 words per request, Access to Ninja Model, Can be verified with Most Detectors, Daily Limit (5000 words)
Basic
$20/month
- 400 words per request, Access to Ninja model, Can be verified with All Detectors, Unlimited Ninja words, Access to Ghost model, 20,000 Ghost words, Access to Generator
Standard
$35/month
- 1000 words per request, Access to Ninja model, Can be verified with All Detectors, Unlimited Ninja words, Access to Ghost model, 50,000 Ghost words, Access to Generator, Priority customer support
Premium
$50/month
- 2000 words per request, Access to Ninja model, Can be verified with All Detectors, Unlimited Ghost words, Access to Generator, Priority customer support, Access to Beta Features, Access to private discord channel
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