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Suikou AI vs ReplyPilot

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Suikou AI compared with ReplyPilot
DetailSuikou AI logo Suikou AIReplyPilot logo ReplyPilot
What it doesAI humanizer for multilingual writing with best-in-class Japanese support A thoughtful reply, in your voice
StageStartup Not given
Founded2026 Not given
Based inHK PL
Pricing modelFreemium Paid
PricingFree: 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 Starter: $10/month for 100 replies per month. Pro: $29/month for 500 replies per month. Annual plans are temporarily unavailable for new purchases.
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
  • Draft LinkedIn replies from comments
  • Multi-language support
  • Text analysis
  • Personalization with saved context
  • Review and edit before insertion
  • Image analysis (Pro plan)
  • Chrome extension integration
  • Tone and style customization
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
  • You control every comment before it goes live with full review and edit capability
  • Drafts sound like you with personalization options and final editing control
  • Works across multiple languages for global audience engagement
  • Saves time on LinkedIn engagement and response drafting
  • Integrates directly into LinkedIn workflow without external tools
Community votes00
DR (Domain Rating by Ahrefs)4 no change since last check14 +1 (up) since last check
Trust Flow (Majestic)114
Citation Flow (Majestic)1429
Referring domains (Majestic)46102

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