Six clear signals
Backed by real evidence
AI Detector · free to try
Know if a human wrote it — with proof
A neural classifier plus five transparent signals score any text from 0 to 100% AI, and show you exactly which patterns gave it away. No black-box verdicts.
Results in seconds100% free — unlimited useNo sign-up required
Your Text
0 / 3000 words
AI Detection Result
Your result will appear here.
Turns stiff AI phrasing into words people actually use
In today's fast-paced worldThese daysIt is important to note thatNote thatleverage synergieswork togethera myriad of optionsplenty of optionsutilizeusedue to the fact thatbecausein order totofacilitatehelpfurthermorealsodelve intolook atIn today's fast-paced worldThese daysIt is important to note thatNote thatleverage synergieswork togethera myriad of optionsplenty of optionsutilizeusedue to the fact thatbecausein order totofacilitatehelpfurthermorealsodelve intolook at
See why it looks AI — not just a score
A bare percentage is easy to get and hard to trust. AI Humanizer Lab pairs a RoBERTa neural classifier with transparent statistical signals, so you can see exactly what drove the verdict.
Uniform sentence rhythm, stock AI phrases, predictable word choices, repeated openers — each signal is scored separately and explained in plain language.
- Neural classifier trained on human vs AI text pairs
- Sentence-variety (burstiness) analysis
- Stock AI phrase and cliché detection
- Vocabulary predictability and structural repetition
aihumanizerlab.com/ai-detector
87%AI
Likely AI-generated
6 signals analysed
- Neural classifier
- Sentence burstiness
- Stock AI phrases
- Vocabulary variety
6independent signals behind every score
<5sto a full verdict with evidence
0–100%calibrated score, never a blind yes/no
No setup required
Done in under a minute
How it works
1
Paste any text
Essays, articles, emails — anything from 50 to 3,000 words, in any major language.
2
Get a verdict in seconds
A neural classifier and five statistical signals score the text from 0 to 100% AI.
3
Read the breakdown
Every score comes with the evidence: which signals fired, which phrases gave it away.
Trusted since day one
Used by 1M+ people worldwide
Why our AI Detector?
Accuracy Across Content Types
Reliable detection for essays, research papers, articles, and everyday writing.
1 Tool = All Detectors
Compare results against Copyleaks, Turnitin, Grammarly, ZeroGPT, GPTZero, and QuillBot in one place.
1M+ Users Worldwide
Trusted by students, researchers, and professionals across the globe.
50+ Languages Supported
Designed for global use across countries and institutions.
Built for how you write
Whatever you're working on, get to a polished result faster.
Educators
Check submissions with evidence you can actually show a student.
Editors
Screen freelance copy before it goes to print or production.
Hiring teams
Verify that cover letters and test tasks reflect the real candidate.
Loved by users worldwide
“It turns my rough drafts into writing that actually sounds like me. Huge time saver before deadlines.”
“The output reads naturally and keeps my meaning intact. My articles feel human again.”
“Fast, simple, and reliable. I use it for docs, updates, and everything in between.”
“It turns my rough drafts into writing that actually sounds like me. Huge time saver before deadlines.”
“The output reads naturally and keeps my meaning intact. My articles feel human again.”
“Fast, simple, and reliable. I use it for docs, updates, and everything in between.”
“My content ranks and reads better. The built-in detector gives me peace of mind.”
“Clean rewrites without losing tone. It has become part of my daily workflow.”
“Great value and it just works across languages. Clients can’t tell the difference.”
“My content ranks and reads better. The built-in detector gives me peace of mind.”
“Clean rewrites without losing tone. It has become part of my daily workflow.”
“Great value and it just works across languages. Clients can’t tell the difference.”
Frequently asked questions
Everything you need to know about AI Humanizer Lab. Can't find your answer?
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