What is an AI Text Detector?
An AI Text Detector (also called AI content detector, ChatGPT detector, or AI probability checker) is a tool that analyzes written content to determine whether it is human-written or generated by artificial intelligence like ChatGPT, GPT-4, Bard, Claude, Gemini, or Llama. It evaluates patterns like sentence structure, predictability, word usage frequency, perplexity, burstiness, repetition patterns, and statistical likelihood. It gives an AI probability score (0-100%) that helps you decide whether the text needs revision. Our tool features: instant detection, AI probability percentage, highlighted suspicious sentences, multiple language support, batch processing, API access, and dark mode. Perfect for blog writers, teachers, editors, businesses, and publishers. Our tool processes everything client-side—your text never leaves your browser. No signup required, completely free.
How Does an AI Text Detector Work?
Detection Technology & Algorithms
AI text detection works by analyzing multiple linguistic and statistical patterns. Key factors include:
- Perplexity: Measures how predictable the text is. AI text has lower perplexity.
- Burstiness: Measures variation in sentence length. Human writing has higher burstiness.
- Repetition Patterns: AI models often reuse phrases and structures.
- Transition Word Frequency: AI uses certain transition words at predictable rates.
- Paragraph Structure: AI produces uniform paragraphs; humans vary length naturally.
Our tool combines these factors into an AI probability score (0-100%). Results are color-coded: green (0-30% = human), yellow (31-69% = mixed), red (70-100% = AI-generated).
Technical Specifications
- Processing Speed: Analyzes 5,000 characters in under 3 seconds
- Text Limit: Up to 10,000 characters per scan
- Language Support: 15+ languages including English, Spanish, French, German, Chinese, Arabic
- Accuracy Rate: 85-95% on standard content
- Detection Models: Supports ChatGPT, GPT-4, Bard, Claude, Gemini, Llama, and more
Why Use Our AI Text Detector?
Key Features & Benefits
Instant AI Probability Score: Get immediate 0-100% probability score with color-coded indicators.
Highlighted Suspicious Sentences: See exactly which parts triggered AI detection.
Multi-Language Support: Detect AI content in 15+ languages.
Batch Processing & History: Upload multiple files, save scan history, export reports as PDF or CSV.
Privacy-First: All detection happens locally in your browser. Your text never leaves your device.
Quick Start Guide
- Paste your text into the input box (up to 10,000 characters)
- Click "Detect AI Content" button
- Wait 2-3 seconds for analysis
- View your AI probability score with color coding
- Review highlighted suspicious sentences
- Export results as PDF or CSV if needed
Pro Tips: Use 250+ words for best accuracy. Combine with manual review for critical decisions. Use batch processing for multiple documents. Bookmark our tool for all your AI detection needs.
Frequently Asked Questions
The tool provides strong probability estimates with 85-95% accuracy on standard content (250+ words). Accuracy varies by language (English highest at 90%+, other languages 75-85%). Always combine with manual review for critical decisions.
It detects most AI patterns from ChatGPT, GPT-4, Bard, Claude, Gemini, and Llama. However, heavily edited or hybrid content may appear more human-like. Short texts (under 150 words) have lower accuracy. No tool guarantees 100% detection.
Yes, completely free with no signup required. All processing happens client-side—your text never leaves your browser. No watermarks, no limits on usage.
The tool analyzes perplexity (word predictability), burstiness (sentence length variation), repetition patterns, transition word frequency, paragraph structure consistency, and statistical likelihood compared to known AI patterns.
Yes, supports 15+ languages including English, Spanish, French, German, Chinese, Japanese, Korean, Arabic, and Hindi. Accuracy ranges from 75-85% for non-English content.
Up to 10,000 characters per scan (approximately 1,500-2,000 words). For longer documents, split into sections or use batch upload. Processing time is 2-5 seconds.
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