The Monica AI Detector (https://monica.im/) is an app that allows users to scan pasted text and receive an assessment of how likely it is AI-generated. The app is provided for limited free use and is included in a paid subscription that provides multiple AI-based apps and services.
Monica integrates multiple LLM models, such as ChatGPT, Claude, and Gemini to provide AI assistance with writing, coding, creating documents and presentations, image and video generation, and many other user needs.
This review covers the AI detector only.
Pros
- Passed 7/7 AI detection tests
- Offers many AI features
- Access to multiple AI platforms
Cons
- Failed 4/8 humanized AI tests
- Failed 4/10 false positive tests
- Credits may run out quickly
Features
- AI detector: Scan pasted text for LLM-generated content.
- Humanizer: Make AI text read as more human and bypass AI detection.
- Chatbot dialogue: Upload documents and dialogue with Monica chatbot.
- Audio generation: Create AI audio from text or text from audio.
- Writing tools: Writing assistant, grammar check, and translation.
- ChatPDF: Upload PDFs for analysis, content breakdown, and file conversion.
- Image and video generation: Create AI images and videos from prompts
- Chrome extension
- Desktop and Mobile App
- IM Integration
- Open API
Pricing Plans
| Free Plan | Pro | Max | Ultra |
| Email signup required | $9.90/month or $99/year | $24.90/month or $199/year | $99.90/month or $995/year |
| 40 basic scans/day | 5,000 basic and 200 advanced scans/month | Unlimited basic and advanced scans | All Max features with more advanced credits |
| Limited trial image and video generation, ChatPDF, and AI agent | 1,500 credits/month, image and video generation, ChatPDF, and AI agent | 4,500 advanced credits/month, all Pro features | 20,000 advanced credits/month and all Pro/Max features |
There is also a basic free Monica AI detector that allows users to scan up to 250 words at a time without needing to register an account.
Credit Values
Advanced Credits – While subscriptions offer unlimited access to several AI features, Monica’s advanced features use credits which are offered on a finite basis, regardless of the user’s subscription level.
Credits can be topped up at an extra cost and refresh on a monthly basis, and are spent as follows:
- AI Detection: 5 words/credit
- AI Text Humanization: 10 words/credit
- Image Generation: 3 credits/image
- Video Generation: 21 credits/video
- AI Translation: 0.5 credits/1000 words
- Live Voice Call: 308 credits/minute
- Additional Context Words: 2 credits/1000 words
Some values are approximate.[1]
Test #1 Monica vs. LLMs
The first test used 7 LLMs to generate a text using the same prompt (seen below), and scanned each text. Monica AI Detector passed this test with flying colors.
Prompt Used
“Write a 400-word article about the paper milling with the intent of being factual while also trying to sound as natural and human as possible, specifically, to pass AI detectors. Please remove all em dashes in your generation.”
Expand
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| LLM | Test Result | Proof |
| ChatGPT – 5.3 Thinking Model | AI
✅ |
 |
| Claude – Sonnet 4.6 Extended | AI
✅ |
 |
| Google Gemini – Thinking | AI
✅ |
 |
| DeepSeek – DeepThink | AI
✅ |
 |
| Perplexity – Free Model | AI
✅ |
 |
| Grok – Auto | AI
✅ |
 |
| Meta | AI
✅ |
 |
Test #2 Monica vs AI Humanizers
The second test saw us running the ChatGPT-generated article through 8 AI-humanizers to make it harder for the Monica AI Detector to do its job when scanning for AI.
4 of the humanizers were able to bypass detection altogether, which leads us to believe that while Monica is great at detecting AI, it isn’t as good at detecting AI in humanized texts.
| AI Humanizer | Humanized | Test Result | Proof |
| Humanize.ai | .txt | Human
❌ |
 |
| StealthGPT | .txt | AI
✅ |
 |
| WriteHuman.ai | .txt | Human
❌ |
 |
| Undetectable.ai | .txt | Human
❌ |
 |
| stealthwriter.ai | .txt | AI
✅ |
 |
| WalterWrites.ai | .txt | Human
❌ |
 |
| Grammarly | .txt | AI
✅ |
 |
| QuillBot | .txt | AI
✅ |
 |
[/collapsible_table]
Test #3 False Positives
The third test assesses how likely Monica AI Detector is to falsely identify human writing as LLM-generated. We scanned a variety of 10 different texts from literature to an academic article to see if they would be misattributed as AI.
Although Monica barely passed the overall test, most of the incorrect results were for technical writing, which can be easily interpreted as less human.
Expand
| Article URL | Test Result | Proof |
| Wuthering Heights (Ch.1) | Human
(passed) |
 |
| Churchill | Human (passed) |  |
| The Guardian (article) | Human
(passed) |
 |
| Wikipedia (“gravity”) | AI
(failed) |
 |
| NPR (interview) | 100% Human
(passed) |
 |
| Cryptonews (article) | AI
(failed) |
 |
| Yahoo Finance (article) | Human
(passed) |
 |
| Medium.com (article) | AI
(failed) |
 |
| arXiv Academic Writing | AI
(failed) |
 |
| Stanford Article (Encyclopedia) | Human
(passed) |
 |
Frequently Asked Questions
Do unused credits carry over?
No, credits reset on a monthly basis for paid plans and daily for free accounts.
Are sentence-by-sentence breakdowns provided?
No, the Monica AI detector doesn’t provide a sentence-by-sentence text analysis.
Is document scanning allowed?
Yes, users can upload documents to Monica’s chatbot and scanned for AI detection.[2] There is also ChatPDF that provides multiple document scanning features. However, the standalone AI detector is for pasted text only.
Is image scanning included?
No, Monica can’t scan images for AI detection. It does provide several AI image creation and editing tools.[3]
Are reports shareable?
Yes, AI detection reports can be downloaded and shared in PDF format (see image).
Does Monica provide certifications?
No, Monica doesn’t provide certifications that documents are authentically human.
Are AI detections used for internal training?
No, user browsing and chat data are kept private, protected, and unaccessed.[4]