| What it does | AI humanizer for multilingual writing with best-in-class Japanese support
| Detect AI, humanize your writing, and enhance your creative work
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| Stage | Startup
| Not given
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| Founded | 2026
| 2023
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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 tier with limited features. Paid plans: $5/month (yearly at $60), $9.50/month (yearly at $114), $15.75/month (yearly at $189), $21.25/month (50,000 words/month). Monthly options: $9.99, $19.00, $31.00, $42.50. Business plans available with custom pricing.
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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
| - Multi-model AI text detection across multiple detectors
- AI humanizer that rewrites text to sound naturally human
- Chrome Extension for detection and humanization anywhere online
- Support for 50+ languages including English, Spanish, French, German, Chinese, Japanese
- Money-back guarantee if output flagged as AI
- API access with personal use and redistribution plans
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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
| - Proprietary humanizer fine-tuned on specific consenting human writers for hyper-specialized rewriting
- Rated #1 Best AI Detector by Forbes
- Outputs verified to pass all major AI detectors
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 4 ● no change since last check | 79 ● no change since last check |
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| Trust Flow (Majestic) | 11 | 18 |
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| Citation Flow (Majestic) | 14 | 47 |
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| Referring domains (Majestic) | 46 | 4196 |
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Suikou AI
Undetectable AI