| What it does | AI humanizer for multilingual writing with best-in-class Japanese support
| Your voice, kept yours, wherever AI writes or speaks for you
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| Stage | Startup
| Not given
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| Founded | 2026
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| Based in | HK
| AU
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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: A$0/month with 10 rewrites per month and 1 voice. Pro: A$11.99/month with 150 rewrites per month (currently on waitlist). Studio: A$34.99/month for up to 5 clients, each with their own voice, 300 rewrites per month, and client approval pages.
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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
| - Rewrite drafts in your voice while keeping facts, numbers and dates unchanged
- Measure drafts for stock phrases, rhythm, word choice and punctuation
- Save and learn from your writing style with every correction
- Studio: save a voice per client with approval pages
- Free Score tool with no signup required
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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
| - Automatically flags when rewrites drop or add numbers, dates or names without user approval
- Learns from your corrections to improve rewrites over time
- Preserves formality level and register while removing template phrases
- Works across text, audio and visual formats with consistent voice
- Built on published research and test results
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 4 ● no change since last check | 1 ● no change since last check |
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| Trust Flow (Majestic) | 11 | 3 |
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| Citation Flow (Majestic) | 14 | 20 |
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| Referring domains (Majestic) | 46 | 6 |
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Suikou AI
Sealis