Free AI Detector & AI Checker
Check any text for AI-generated content with 99.8% accuracy. Detect ChatGPT, Claude, Gemini, and more. 100% free, unlimited, and private.
Trusted by 2,700,000+ users
Trusted & Featured by Globally Leading Publications
Catch AI Writing in Seconds
with Our Free AI Detector
Spot ChatGPT and other AI-generated text instantly. No signup required, just paste your text and get results in under 10 seconds.
Paste Your Text
Add your content: Copy and paste any text you want to check for AI writing.
Choose your language: Works with English, Spanish, French, and German text.
Minimum length: Make sure your text is at least 50 words long for accurate results.
Get Instant Results
Click "Check for AI": Press the button and get results in under 10 seconds.
See your score: Get a clear percentage showing how much text is AI-generated.
View detailed breakdown: See exactly which sentences our AI detector flagged.
Review & Fix
Check highlighted parts: Red highlights show text that looks AI-generated.
Rewrite if needed: Edit flagged sections to make them sound more human.
Test again: Run another check to see your improvements.
What is an AI Detector?
An AI detector is a tool designed to analyze written content and identify whether it was created by a human or generated by artificial intelligence. It can detect content from major models, including ChatGPT, Gemini, Claude, and Llama, and accurately distinguish between fully AI-generated text and content that has been refined using assistive writing tools.
AI detectors are widely used by educators, businesses, publishers, and content creators to verify originality, protect content quality, and promote transparency. Supporting all major languages, our AI Checker provides detailed feedback, helping users quickly verify the authenticity of content in seconds.
More clarity, less confusion with Phrasly's AI Detector
AI writing tools like ChatGPT, Claude, and Gemini have changed how content is created. They help millions of people write faster, but most AI detectors struggle to tell the difference between fully AI-generated text and content that was simply refined with assistive tools.
This leads to false positives, wrongful accusations, and confusion. That's why we built a more reliable AI detector. Phrasly doesn't just give you a percentage. It highlights the exact sentences that triggered detection and helps you understand why.
Detect smarter. Fix faster. Write with confidence.
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20/1,200 words
of text is likely AI-generated
Why Choose Phrasly's
AI Detector & AI Checker?
Our AI detector and AI checker deliver results you can trust. Here's what makes Phrasly different.
Industry-Leading Accuracy
Phrasly's AI checker achieves 99.8% accuracy in detecting AI-generated text from the latest models including ChatGPT, Claude, Gemini, and other AI writing tools. Trained on over 1 million real human articles.
Lightning-Fast Results
Get your AI detection report in under 10 seconds. Our AI checker processes your text instantly and provides detailed results showing exactly which sections appear AI-generated.
100% Free, No Hidden Limits
Unlike other AI detectors that advertise "free" but limit you to 250–500 characters, Phrasly's AI checker is genuinely unlimited. No character caps, no scan limits, no pressure to upgrade.
Your Privacy Protected
Your content stays completely private. All text is processed securely and deleted immediately after analysis. We do not store your writing, share it, or use it to train our models.
Sentence-Level Highlighting
Our AI checker doesn't just give you a percentage. It shows you precisely which sentences triggered the detection, making it easy to understand and address flagged content.
All Major AI Models
Detects content from ChatGPT (GPT-4o, GPT-5), Claude, Google Gemini, Meta Llama, Jasper, Copy.ai, and more. Our detector identifies universal AI patterns across platforms.
Most AI Detectors Give You a Score. That Is Not Enough.
A percentage means nothing if you do not know what to fix. Phrasly shows you exactly which sentences were flagged and lets you fix them in one click.
Other AI Detectors
- Limited free tiers with hidden character caps
- Unreliable accuracy across different AI models
- Slow processing times for longer texts
- No actionable insights, just a score
- Data privacy concerns with stored content
- Charge for basic detection features
Phrasly AI Detector
- 99.8% accuracy across ChatGPT, Claude, Gemini, and more
- 100% free with no hidden limits or character caps
- Results in seconds, no matter the text length
- Sentence-level highlighting shows exactly what was flagged
- Your content is never stored and deleted after processing
- Cross-check against 5 major detectors in one scan
- Detect then correct workflow to fix flagged content
The Highest-Rated AI Detection Tool
Don't take our word for it. Check Trustpilot yourself.
“Anyone who is struggling with writing papers needs this! I use it by generating example papers on which I can base my writing. Would highly recommend it!”
Coryn A.
“Phrasly is straightforward. It does everything I need it to do. I plug in the requirements for my document, and Phrasly does the rest. Simple yet comprehensive. I would recommend Phrasly every day of the week.”
Michael
“We use Phrasly to help improve blog posts, it speeds up the content creation and allows us to concentrate on other areas of the business.”
Stephen H.
Frequently Asked Questions
Here are the answers to the ones we hear the most.
Absolutely not. Phrasly is committed to protecting your privacy. We do not store any of your content on our servers. All content is deleted immediately after you close the tab. We do not share content with third parties, and we do not use it for any purpose other than to check for AI.
Try Phrasly for free today
Join 2,700,000+ writers who trust Phrasly to verify the authenticity of their content.