AI Detection Checker
Check if your text might be flagged as AI-generated. Get an instant AI likelihood score with pattern analysis.
Check for AI Patterns in 3 Steps
Scan your text for common AI writing patterns instantly
Paste Your Text
Copy any text you want to check - AI-generated content, essays, articles, or any written content.
Quick Scan
The tool analyzes writing patterns including sentence uniformity, vocabulary diversity, and stylistic markers.
Review Your Score
Get an AI likelihood score from 0-100% with a breakdown of the heuristic signals detected in your text.
Why Use SupWriter's AI Detection Checker?
A fast, private, and free way to assess AI likelihood in any text
Pattern Analysis
Analyzes sentence length variance, which tends to be more uniform in AI-generated text compared to human writing.
Vocabulary Diversity
Measures type-token ratio (unique words vs. total words) to assess vocabulary richness - a key indicator of authorship.
AI Likelihood Score
Get a clear 0-100% score with color coding: green for likely human, yellow for mixed, and red for likely AI.
Transition Word Detection
Detects overuse of transition words and phrases commonly favored by AI language models.
Privacy First
All analysis happens locally in your browser. Your text is never sent to any server or stored anywhere.
Instant Results
Get your AI detection score in milliseconds. No waiting, no sign-up, no limits on usage.
Frequently Asked Questions
More AI Writing Tools
Explore more tools to analyze and improve your writing
AI Detector
Use our full AI detector with advanced machine learning models for professional-grade detection.
Try it freeAI Humanizer
Transform AI-generated text into natural, human-like content that bypasses AI detectors.
Try it freeAre AI Detectors Accurate in 2026?
Explore the accuracy and limitations of modern AI detection tools in 2026.
Try it freeHow Does AI Detection Work?
Learn the technology behind AI detection and how tools identify AI-generated content.
Try it freeAI Detection Hub
Your central resource for understanding and navigating AI detection tools and strategies.
Try it freeBest AI Detector Tools 2025
Compare the top AI detector tools and find the best one for your needs.
Try it freeTested and Proven Across All AI Detectors
We test every rewrite against leading detection tools like GPTZero, Turnitin, ZeroGPT, and more. Our system is updated weekly to adapt to new detection methods and eliminate flagged patterns.
98.7%success rate across all major detection platforms
What Our Users Say
Thousands of writers trust SupWriter every day
Ready to Write with Confidence?
Join thousands of students and researchers who trust our AI-powered rewriting tool to create authentic, undetectable content.
No credit card required • Free tier available • Cancel anytime