PromptLabster vs Opsis
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
PromptLabster compared with Opsis
| Detail | 
PromptLabster | 
Opsis |
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| What it does | Research-backed prompting techniques from arXiv, rated for practical value
| 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 | Not given
| Not given
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| Key features | - 715 published prompting techniques scored 80+ for practical value
- Scores based on practitioner applicability, evidence strength, effect size, and novelty
- Copy-paste prompts for ChatGPT, Claude, and Gemini
- Links to original arXiv papers for every technique
- Weekly newsletter with top techniques every Sunday
- Four views per technique: breakdown, plain language, digest, and role-based guides
- Browsable catalog organized by technique type and publication month
- No account required to access all pages and techniques
- Lab score range 80-97 indicates technique quality and applicability
| - 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 | - Transparent scoring methodology with links to original papers for verification
- Techniques tested across multiple models and use cases to confirm practical transferability
| - 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 ▲ +1 (up) since last check | 4 ● no change since last check |
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| Trust Flow (Majestic) | 6 | 0 |
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| Citation Flow (Majestic) | 17 | 12 |
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| Referring domains (Majestic) | 4 | 1 |
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4 details filled in for both companies.
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