Free AI Checker & AI Detector
Check if your text flags as AI — free, instant, and deeply insightful
Linguistic Analysis Insights
Style & Tone: Awaiting run...
Phrasing & Structure: Awaiting run...
Vocabulary Diversity: Awaiting run...
Simulated Probabilities Across Industry Detectors
AI Model Signature Mapping
Press Ctrl + Enter to run detection
01 What Is the AI Detector & Checker?
This tool analyzes any text to determine whether it was written by AI or a human. It examines linguistic patterns, sentence structure, vocabulary diversity, and stylistic markers that distinguish AI-generated content from authentic human writing. You get a detailed breakdown with scores from multiple simulated industry detectors like GPTZero, Turnitin, Copyleaks, and ZeroGPT — all in one place, for free.
02 Who Is This For?
Verify your work before submission to ensure academic integrity and avoid false AI flags.
Quickly screen student submissions for AI-generated content with comprehensive reports.
Ensure your blog posts, articles, and social content pass as authentic human writing.
Maintain editorial standards by screening freelance submissions for AI involvement.
03 How to Use – Step by Step
Type or paste text into the left panel (minimum 25 words for accuracy), or use the "Upload File" button to load a .txt or .docx document. You can also click "Try Sample" to test with pre-loaded AI text.
Press the blue detection button (or use Ctrl + Enter). The engine analyzes your text in real-time, evaluating it against multiple AI model signatures.
Examine the verdict, AI/Human/Mixed percentage bars, linguistic insights, cross-detector probabilities, and AI model signature mapping. Each section gives you a deeper understanding of your text's authenticity.
Click "Export PDF Report" to save or print the analysis. If your text scores high on AI detection, use the "Humanize Output" button — it copies your text and directs you to our AI Humanizer tool to rewrite it naturally.
04 Why Does This Detector Work?
AI detection relies on identifying predictable patterns in machine-generated text — uniform sentence lengths, repetitive phrasing, low burstiness, and formulaic vocabulary. Our detector cross-references your text against:
- Perplexity analysis: How surprising and varied the word choices are
- Burstiness scoring: Variation in sentence structure and rhythm
- Model signature mapping: Patterns unique to ChatGPT, Claude, Gemini, Grok, and DeepSeek
- Cross-detector simulation: How major platforms like Turnitin and GPTZero would likely score your text
AI detection requires enough linguistic data to identify patterns. Very short texts (under 20 words) don't contain sufficient sentence structure, vocabulary variety, or stylistic markers for a reliable analysis. For best results, submit at least 50-100 words. The longer the text, the more accurate the detection becomes.
This tool uses advanced linguistic pattern analysis to provide high-confidence estimates. However, no AI detector is 100% foolproof. False positives can occur, especially with highly technical, formulaic, or non-native English writing. Always use detection results as one data point alongside your own judgment. The cross-detector simulation gives you a range of perspectives from multiple industry tools.
The AI Model Signature Mapping section shows how closely your text matches the known writing patterns of specific AI models:
- ChatGPT Profiler: Matches OpenAI's distinctive structuring and phrasing
- Claude Profiler: Identifies Anthropic's characteristic thoughtful, nuanced style
- Gemini Profiler: Detects Google's unique output patterns
- Grok Profiler: Flags xAI's conversational and direct tone markers
- DeepSeek Profiler: Recognizes DeepSeek's specific generation signatures
No. All analysis happens in real-time via the Cloudflare Worker backend. Your text is sent securely, processed, and the results are returned instantly. Nothing is stored, logged, or retained on any server. Your privacy and content security are fully protected.
False positives can happen, especially with:
- Heavily structured or formulaic writing (legal, technical, academic templates)
- Non-native English that follows predictable patterns
- Text that has been lightly edited from AI drafts
If you believe your text is genuinely human-written, review the Linguistic Analysis Insights section to understand which patterns triggered the flag. You can also run the text through our AI Humanizer tool (use the "Humanize Output" button) to restructure it naturally while preserving your meaning.
If you're not seeing results, check the following:
- Ensure you have a stable internet connection
- Verify the Cloudflare Worker URL is correctly configured in the script
- Check your browser's console (F12) for any CORS or network errors
- Make sure your text meets the minimum 20-25 word requirement
- The Worker must be deployed and active in your Cloudflare dashboard
If problems persist, try redeploying your Cloudflare Worker with the latest code.
As a freelance content creator, having access to an AI Text Humanizer and Grammar Checker all in one place is fantastic. Very smooth user interface!
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