Opsis vs RewriteAI
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Opsis compared with RewriteAI
| Detail | 
Opsis | 
RewriteAI |
|---|
| What it does | Autocomplete and AI assistant for Mac and Windows, built on a private account of your work
| AI humanizer and detector for natural writing
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| Stage | Startup
| Not given
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| Founded | 2026
| Not given
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| Based in | AU
| Not given
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| Pricing model | Freemium
| Freemium
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| Pricing | Not given
| Not given
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| Key features | - Autocomplete with Tab to accept drafts
- Error detection and fact-checking
- Cross-app integration
- Source attribution for every suggestion
- Context-aware AI assistance
- One-click pause and privacy control
- Encrypted data storage
- Read-only app connections
- Natural writing style matching
| - AI humanizer with five writing styles (Standard, Academic, Professional, Casual, Creative)
- AI detector with sentence-level analysis and probability scoring
- Support for 10 languages including English, Spanish, French, German, Portuguese, Italian, Dutch, Polish, Arabic, and Hindi
- Accepts text inputs up to 5,000 words at a time
- AI Image Detector for pixel analysis and metadata inspection
- Tone Changer for adjusting writing tone without changing content
- SEO Rewriter for search-optimized content
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| What makes it different | - Finishes sentences from your actual work history and connected files, not generic AI
- Shows source for every suggestion so you can verify it before accepting
- Catches mistakes and contradictions between what you're writing and your work history
- Works inline in the apps you already use without installation
- You stay the author with full control over what gets written
| - Preserves original meaning while restructuring text to sound natural
- Shows sentence-level signals alongside AI probability score rather than single verdict
- Free plan available with no credit card required
- Results stream back in seconds for fast processing
- Text not sold or shared with third parties
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 4 ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 0 | 2 |
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| Citation Flow (Majestic) | 12 | 16 |
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| Referring domains (Majestic) | 1 | 7 |
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4 details filled in for both companies.
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