AI detector: check if text was written by AI
Paste an essay, article or email and get an AI score in seconds, with a breakdown of whether it reads as human-written or AI-generated.
Trusted by 30k users worldwide
How to check text for AI
- 1
Paste your text
Paste or type the text you want to check: up to 600 characters on the free plan, 10,000 with Unflag Plus.
- 2
Press Analyze
Unflag scores how likely the text is to be AI-generated.
- 3
Read the result
See the AI score and whether the text reads as human-written or AI-generated. If it reads as AI, rewrite it with the AI humanizer.
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Why Unflag?
99.5%
Accuracy
Our most advanced model delivers reliable results for essays, research papers, reports and articles.
AI Score
12%
Likely Human-written
Built-in AI detector
See how your text reads to AI detectors before you hand it in.
30k+ users worldwide
Students and professionals around the world use Unflag to write with confidence.
Works in your language
Humanize and rewrite text in English, Spanish, Chinese, Arabic and many more languages.
Every writing tool in one place
Humanize, rewrite, detect and fact-check without switching apps.
Built-in fact checker
Check the claims in your writing against sources on the web.
Works with any AI writer
Paste text from ChatGPT, Claude, Gemini or any other AI. Unflag makes it sound human, so it gets past AI detectors like GPTZero and Turnitin.
Ready wherever you are
Humanize, rewrite and check your writing on your phone with the Unflag app for iPhone and Android.
Simple Pricing
One plan with every tool. Cancel anytime.
Unflag Plus
$3.83/month
$45.99 billed yearly
- Unlock All Features
- Make AI Text Indistinguishable from Human
- Professional Grade AI Detection
- Instant Fact Checking for Total Credibility
- Prevent Hallucination
- 45x More Usage Capacity
- Higher Word Count
- Ad Free, Distraction-Free Experience
Frequently Asked Questions
Can't find your answer? Contact us.
How accurate is the AI detector?
No AI detector is 100% accurate. Unflag's score shows how likely a text is to be AI-generated; it is not proof. Treat it as one signal and read the breakdown before you decide anything.
Which AI tools can it detect?
It checks text written with ChatGPT, Claude, Gemini and other AI writing tools.
Is the AI detector free?
Yes. You can check up to 600 characters at a time for free. Unflag Plus raises the limit to 10,000 characters and gives you 45 times more usage.
Will other detectors like Turnitin or GPTZero give the same result?
Not necessarily. Each detector uses its own model, so scores can differ. We're not affiliated with Turnitin, GPTZero or similar services.
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