| What it does | AI humanizer for multilingual writing with best-in-class Japanese support
| AI text humanizer that turns AI-generated drafts into natural writing
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| Stage | Startup
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| Founded | 2026
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| Based in | HK
| HK
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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
| Basic Year: $5/mo ($60 billed annually) with 240,000 words/year; Pro Year: $10/mo ($120 billed annually) with 960,000 words/year; Unlimited Year: $15/mo ($180 billed annually) with unlimited AI humanization
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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
| - Context-aware sentence reconstruction
- Contextual lexical selection based on semantic context and register
- Rhythm and linguistic variation
- Tone and register adaptation
- Semantic preservation to maintain original intent and meaning
- Support for 17 mainstream languages
- Works with multiple AI writing tools
- AI detector integration
- Up to 5,000 words per batch
- Browser extension for Chrome and Edge
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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 humanization model specifically optimized for AI text instead of general-purpose AI
- Preserves semantic meaning with 100% semantic preservation guarantee
- Privacy-first approach with immediate text deletion
- Helps 100M+ words polished daily across hundreds of thousands of users
- 92% pass rate increase with major AI detectors after humanization
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 4 ● no change since last check | 5 ● no change since last check |
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| Trust Flow (Majestic) | 11 | 6 |
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| Citation Flow (Majestic) | 14 | 32 |
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| Referring domains (Majestic) | 46 | 515 |
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Suikou AI
Unfox AI Humanizer