โœจ 100% Free ยท No Login ยท No API

Free AI Text Detector
Check Any Writing Instantly

Paste any text to instantly detect if it was written by ChatGPT, Claude, Gemini, Grok or any AI. Powered by 12 research-backed algorithms. Works on essays, emails, stories, articles โ€” anything written.

๐Ÿ” Detects All AI Models โšก Instant Results ๐Ÿ”’ Private & Secure ๐Ÿ“ฑ Works on Any Device
Free Forever ๐Ÿ”’ Private
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Detect Writing From Every Major AI

Specialized detection patterns for each AI model's unique writing style

ChatGPT ChatGPT GPT-4, GPT-4o, GPT-5 Claude AI Claude Claude 3, 3.5, 3.7 Gemini AI Gemini Gemini 1.5, 2.0 Grok AI Grok xAI Grok 2, 3 DeepSeek AI DeepSeek DeepSeek R1, V3 Microsoft Copilot Copilot Bing AI, Microsoft Meta AI Meta AI Llama 3, 4 Perplexity AI Perplexity Sonar models Humanized AI Humanized AI Undetectable, Stealth

Why Our AI Detector is Different

Free Forever โ€” No Limits

No word limits, no daily caps, no credit system. Analyze as many texts as you need, whenever you need. Free now, free always.

No API Key Required

Most AI detectors charge because they call OpenAI's API for every check. Ours uses pure JavaScript algorithms โ€” zero external calls, zero cost.

Runs Entirely in Your Browser

All 12 detection algorithms run as JavaScript in your browser. No server processing. Results appear in under one second. Works offline after first load.

Your Text Stays Private

We never see your text. Ever. It never leaves your device. Perfect for confidential documents, student submissions, proprietary business content.

How the AI Detector Works

Our detector analyzes text using 12 linguistic signal categories based on published AI writing research.

1

Paste Your Text

Copy any text โ€” an essay, email, article, story or report โ€” and paste it into the detector above. Minimum 30 words for reliable results. No account needed.

2

12 Algorithms Analyze Simultaneously

Our engine runs two detection modes in parallel: Academic AI Mode (detects essays, emails, reports) and Narrative AI Mode (detects stories, creative writing). Each mode runs 6 specialized algorithms.

3

Get an AI Probability Score

You receive an AI probability score from 0-97%, a verdict (Human / Mixed / AI), detection mode label, and a breakdown of all 12 signals with individual scores. Click any signal to see what it found.

Learn More About the Detection Methods โ†’

What Does AI Writing Look Like?

๐Ÿค– AI Writing Patterns

  • โœ— Uses words like "delve", "meticulous", "nuanced", "pivotal"
  • โœ— Always concludes with "In conclusion" or "In summary"
  • โœ— Very uniform sentence lengths (low burstiness)
  • โœ— Overuses transitions: "furthermore", "moreover", "additionally"
  • โœ— Repeats phrases and sentence structures
  • โœ— Claims everything is "comprehensive" and "groundbreaking"

โœ๏ธ Human Writing Patterns

  • โœ“ Varied vocabulary, including colloquialisms
  • โœ“ Diverse sentence lengths โ€” some very short, some long
  • โœ“ Personal anecdotes, specific details, opinions
  • โœ“ Natural transitions or none at all
  • โœ“ Typos, contractions, casual language
  • โœ“ Unpredictable structure and genuine voice
See Side-by-Side AI vs Human Examples โ†’

Who Uses AI Detector Free?

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Teachers & Educators

Check student submissions for AI-generated content. Maintain academic integrity without expensive subscriptions.

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Students

Check your own work before submission to make sure it reads human. Understand where your writing sounds AI-generated.

โœ๏ธ

Writers & Editors

Verify freelancer submissions and content agency deliverables. Ensure you're paying for authentic human-written content.

Frequently Asked Questions

Research-Backed Detection: Our algorithms are based on peer-reviewed research including Kobak et al. "Delving into ChatGPT usage in academic writing through excess vocabulary" (Science Advances, 2025), Stanford HAI writing pattern studies, and analysis from the Wikipedia AI Cleanup Project. Read about our methodology โ†’