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What is Know Nota?
Know Nota is a web-based application designed to analyze written text and assess its similarity to machine-generated content. It provides a document-level score, rating band, word count, model version, and the model's measured false-positive rate to support informed review rather than treating the result as proof of AI authorship. Text under 100 words is not scored, and the app does not identify a specific AI system or label individual sentences.
In addition to AI text analysis, Know Nota creates signed writing records that document how a file was produced. Users can connect a selected Google Doc or upload a DOCX file to review available writing history, including editing sessions, typing pace, and pasted content, before choosing whether to save the record. Records can be shared through a verifiable link and may include document hashes, analysis results, and supporting evidence.
Know Nota also provides evidence features such as writing measurements, matched source passages, and checks for hidden characters or look-alike letters. Pasted text is processed in memory and discarded by default unless the user chooses to retain it in a record. The app is designed for students, educators, schools, publishers, editorial teams, hiring groups, and other organizations that need a transparent approach to AI writing checks, document provenance, and writing history.
AI Tool Review Summary
Performance Score
4.2/5
Content/Output Quality
High, consistent, and on-brand
Interface
Clean and minimal
AI Technology
LLMNLP
Purpose of Tool
To analyze text for AI-generated content and document writing history
Compatibility
Web-based application accessible via browsers on various platforms
Pricing
Freemium with paid monthly plans
Features
Features with the highest value for users are highlighted here.
AI text analysis
Document-level scoring
Writing history reports
Source matching
False-positive rate measurement
Who Is It For?
Students
Educators
Publishers
Editorial Teams
Hiring Managers
Researchers
Content Creators
Journalists
Legal Professionals
Government Agencies
Pricing
Free
$0/free
- 2,000 words per day
- AI checks for text of at least 50 words
- Writing measurements and character checks
- Free writing history reports
Popular
Individual
$18/monthly
- Everything in Free
- Find matching sources on the web (beta)
- Download and share saved AI-check reports
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Pros & Cons
Pros
- Provides clear AI similarity assessments.
- Offers verifiable writing history records.
Cons
- Does not identify specific AI systems.
- Text under 100 words is not scored.
FAQs
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Quick Know Nota Comparision
Side-by-side with top alternatives in this category.
| Tool | Rating | Visits / mo | Global rank | Category rank | Engagement | Bounce | Top market | Starts at | Free tier | Integrations | Action |
|---|---|---|---|---|---|---|---|---|---|---|---|
 Know NotaAI Detectors | 4.1 | — | — | — | — | — | — | $0 | Yes | — | View |
 AI Detector & HumanizerAI Detectors | 4.3 | 143.2M | — | — | 50s1.6 pages | 73% | — | $0 | Yes | 1 | View |
 TurnitinAI Detectors | 4.4 | 12.6M | #3,292 | #70 | 5m 30s6.0 pages | 20% | US#3,475 | Contact for pricing | No | — | View |
 ZeroGPTAI Detectors | 4.5 | 21.4M | #2,935 | #56 | 3m2.5 pages | 61% | US#2,789 | $0 | Yes | 1 | View |
 Plagiarism CheckerAI Detectors | 4.4 | 3.5M | #18,250 | #5 | 1m 50s2.3 pages | 61% | ID#7,094 | $0 | Yes | — | View |
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