Mastheads™ vs Opsis
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Mastheads™ compared with Opsis
| Detail | 
Mastheads™ | 
Opsis |
|---|
| What it does | Source-backed articles with real bylines and fact-checking
| Autocomplete and AI assistant for Mac and Windows, built on a private account of your work
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| Stage | Not given
| Startup
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| Founded | Not given
| 2026
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| Based in | Not given
| AU
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| Pricing model | Freemium
| Freemium
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| Pricing | Free trial: 7 days, 10 articles, no card required. Starter: $83/month (introductory price, standard $124/month), 40 articles/month, up to 3 sites, billed annually. Growth: $208/month (introductory price, standard $333/month), 120 articles/month, up to 10 sites, billed annually. Pro: $499/month (intr
| Not given
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| Key features | - Ten editorial desks that research, write, fact-check and publish
- Source-backed writing with inline citations
- AI fact-checking against actual sources fetched
- Named editor of record on every article
- AI-generated original cover images
- CMS integration with WordPress, Ghost, Webflow, Shopify, HubSpot, GoHighLevel
- Publish on your own schedule with review-by-default
- Multi-language support with native local registers
- Content API with export options
- Topic research and story discovery
| - 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
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| What makes it different | - Autonomous publishing with human editorial control and named bylines
- Every claim fact-checked against sources actually fetched, not guessed
- Customer owns all content outright with no lock-in
- No paywall scraping or deliberate defeats of access controls
| - 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
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 7 ▲ +2 (up) since last check | 4 ● no change since last check |
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| Trust Flow (Majestic) | 10 | 0 |
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| Citation Flow (Majestic) | 29 | 12 |
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| Referring domains (Majestic) | 81 | 1 |
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4 details filled in for both companies.
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