AI Detector - Free AI Content Checker
Free AI detector to check if text is AI-generated. Detect ChatGPT, Claude, Gemini, and other AI writing tools. Fast, accurate, no signup required.
⚠️ Disclaimer: This is a basic heuristic checker and may not be 100% accurate. For professional use, consider paid detection services like GPTZero or Originality.ai.
How It Works
This AI detector uses pattern recognition to analyze text for characteristics commonly associated with AI-generated content. It examines multiple factors including:
- Sentence structure and length consistency
- Vocabulary choices and phrase patterns
- Transition word usage
- Formal vs. informal language
- Presence of human writing patterns (typos, contractions, informal language)
- Paragraph structure and organization
The tool assigns a score from 0-100%, where higher scores indicate a higher likelihood of AI generation. However, this is a heuristic-based approach and may not be 100% accurate.
Common AI Writing Patterns
AI-generated text often exhibits these patterns:
- Overuse of transition words: Frequent use of "furthermore", "moreover", "additionally"
- Consistent sentence structure: Sentences that are very similar in length and structure
- Formal, academic tone: Lack of contractions, very proper grammar, formal vocabulary
- Lack of personal voice: No first-person perspective, no personal anecdotes, no emotional language
- Perfect organization: Every paragraph is 3-5 sentences, very uniform structure
- Common AI phrases: Overuse of phrases like "delve into", "it's worth noting", "leverage"
Limitations
- Not 100% accurate: This is a heuristic-based tool, not a machine learning model. It can have false positives and false negatives.
- Works best with 100+ words: Very short texts may not provide enough patterns to analyze accurately.
- Can have false positives: Well-written, formal human content may score high if it follows similar patterns to AI writing.
- Can have false negatives: AI content that has been heavily edited or rewritten may score lower.
- Professional tools use ML: Paid services like GPTZero and Originality.ai use trained machine learning models for higher accuracy.
Frequently Asked Questions
How accurate is this detector?
This is a basic heuristic-based detector, not a machine learning model. It provides estimates based on pattern recognition. For professional use cases requiring high accuracy, consider paid services that use trained ML models.
What AI tools can it detect?
This detector looks for general AI writing patterns that are common across many AI models including ChatGPT, Claude, Gemini, and other language models. It doesn't identify which specific tool was used.
Is this better than paid detectors?
No. Paid detectors like GPTZero and Originality.ai use trained machine learning models and are generally more accurate. This free tool is useful for quick checks and educational purposes, but for professional or legal use cases, consider paid services.
Can it detect ChatGPT, Claude, and Gemini?
Yes, this detector looks for patterns common to AI-generated text from various models including ChatGPT, Claude, Gemini, and others. However, it cannot identify which specific model was used.
How much text do I need?
The tool works with as little as 10 characters, but for best results, provide at least 100 words. Longer texts provide more patterns to analyze and generally yield more accurate results.
How to Use
- 1
Paste your text
Copy and paste the text you want to analyze into the input field. The tool works best with at least 100 words.
- 2
Click Analyze
Click the "Analyze Text" button to run the detection algorithm. Analysis happens instantly in your browser.
- 3
Review results
View the AI likelihood score (0-100%) and read the detailed breakdown of patterns detected in the text.
This tool uses pattern recognition heuristics to identify characteristics commonly found in AI-generated text. It analyzes factors like sentence structure, vocabulary choices, transition word usage, and writing patterns. While not 100% accurate, it can help identify text that shows typical AI writing patterns.
- •Checking if content was written by AI
- •Verifying authenticity of submitted work
- •Identifying AI-generated spam or reviews
- •Educational purposes to understand AI writing patterns
Tip: This is a basic heuristic checker. For professional use cases requiring higher accuracy, consider paid detection services that use machine learning models.