| What it does | AI humanizer for multilingual writing with best-in-class Japanese support
| Rewrite AI-generated content into natural, human-like writing
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| Stage | Startup
| Not given
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| Founded | 2026
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| Based in | HK
| US
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| Pricing model | Freemium
| Freemium
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| Pricing | Free: 500 words/day humanize + unlimited detector (no credit card required); Basic: $9.99/month for 50,000 words/month + 30-day history + priority email support; Pro: $19.99/month for 250,000 words/month + academic mode + 90-day history + priority API queue. Student discount: 50% off annual plans wi
| Free: 10 humanizations/day, 10 AI scans/day, 1,000 words per input. Starter: $20/mo — 50 humanizations/day, 50 AI scans/day, 5,000 words per input. Plus: $50/mo — 150 humanizations/day, 150 AI scans/day, 5,000 words per input. Pro: $100/mo — 350 humanizations/day, 350 AI scans/day, 5,000 words per i
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| Key features | - AI text humanizer with casual, academic, and business modes
- Free AI content detector with ai_score, perplexity, and burstiness metrics
- Morphology-aware Japanese rewriting with conjugation and particle control
- Citation and technical term preservation in academic mode
- Three parallel rewrites scored by separate detector model
- Five-step intensity slider for faithfulness vs. AI-fingerprint tradeoff
- History and re-rewrite capability (30 or 90 days depending on plan)
- Second-pass academic polish with Claude 3.5 Haiku on Pro plan
- Support for English, Japanese, Korean, German, French, Spanish, Portuguese, and Chinese
- Tested against GPTZero, Turnitin, Originality.ai, and Copyleaks
| - Humanize AI text with light, medium, or aggressive rewrite levels
- AI detector to scan writing before and after humanization
- Sentence-by-sentence analysis with color-coded highlights
- Choose from multiple alternative rewrites for each sentence
- Fast processing in seconds
- Support for multiple languages including Spanish, French, German, Italian, Portuguese, Dutch
- Web-based app with no downloads or installation required
- Works on desktop, tablet, and mobile browsers
- Preserves original meaning while improving readability
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| What makes it different | - Best-in-class Japanese support with morphology-aware morpheme-level tuning, unlike generic humanizers
- Separate AI detector scores rewrites to guarantee the most natural result
- Preserves academic citations, figures, tables, and technical terminology verbatim
- Five-step granular intensity control to trade off faithfulness versus AI-fingerprint removal
- Independent developer with transparent privacy: no model training on user text, fixed deletion schedule
| - Clean, grammatically correct output ready to use as-is
- Works with any AI tool including ChatGPT, Claude, Gemini, and more
- Multiple rewrite levels for fine-grained control over output
- No technical knowledge required to use
- Faster processing than competitor tools
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 4 ● no change since last check | 58 ● no change since last check |
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| Trust Flow (Majestic) | 11 | 13 |
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| Citation Flow (Majestic) | 14 | 40 |
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| Referring domains (Majestic) | 46 | 849 |
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Suikou AI
StealthWriter