AI Detector: Check If Your Text Is AI-Generated
Instantly detect AI-written content with our AI content detector. Paste any text to check if it was written by ChatGPT, Claude, Gemini, or other AI writing tools. Get detailed analysis with the same accuracy as GPTZero and Turnitin.
Results vary by text type. Review output before use.
How Our AI Writing Detector Analyzes Your Text
Perplexity Analysis
Measures how predictable your text is - the core method used by GPTZero. AI-generated text from ChatGPT and Claude has low perplexity (high predictability), while human writing is more varied and surprising.
Burstiness Detection
Analyzes sentence length variation. Human writers naturally create 'bursts' - mixing short punchy sentences with longer complex ones. AI writing tools produce unnaturally uniform sentence patterns.
Readability Scoring
AI tools like ChatGPT produce text locked in a narrow readability range (Grade 8-10). Our AI detector flags content with suspiciously consistent readability scores that indicate machine generation.
AI Fingerprint Detection
Identifies tell-tale ChatGPT patterns: overused transitions ('Furthermore', 'Moreover', 'Additionally'), generic openers, and repetitive n-gram sequences that reveal AI authorship.
Why Choose Our AI Detector Over GPTZero?
See why 50,000+ users prefer our AI content detector over expensive alternatives like GPTZero and Originality.ai.
| Feature | HumanizerAI | GPTZero | Originality.ai |
|---|---|---|---|
| AI detection included | |||
| 6 detailed metrics breakdown | |||
| Sentence-level AI highlighting | |||
| Built-in AI humanizer tool | |||
| Developer API access | |||
| No watermarks or usage caps |
Who Uses Our AI Content Detector?
Students & Academics
Check your essays and papers before submitting to Turnitin. Ensure your AI-assisted research and writing won't get flagged or penalized.
Content Writers & Bloggers
Verify your articles pass AI detection before publishing. Google's helpful content update may demote detectable AI content in search rankings.
Educators & Institutions
Screen student submissions for AI-generated content. Quickly identify ChatGPT, Claude, and other AI tool usage in academic work.
AI Detector FAQ - Common Questions
What is an AI detector and how does it work?
An AI detector (also called AI content detector or AI writing detector) analyzes text to determine if it was written by AI tools like ChatGPT, Claude, or Gemini. It works by measuring statistical patterns including perplexity (predictability), burstiness (sentence variation), and identifying AI-specific writing fingerprints that human writers don't produce.
How accurate is this free AI detector?
Our AI detector uses the same detection methods as GPTZero and Turnitin - analyzing perplexity, burstiness, readability, and pattern recognition. It accurately identifies AI-generated content from ChatGPT, Claude, Gemini, and other AI writing tools with results comparable to paid alternatives.
How does the AI detector work?
Our AI detector analyzes text using the same methods as GPTZero and Turnitin - perplexity, burstiness, and pattern detection. Sign up to access detection and humanization features.
Can I detect AI text from ChatGPT and Claude?
Absolutely. Our AI detector works with all major AI writing tools including ChatGPT (GPT-4, GPT-4o), Claude (Claude 3, Claude 3.5), Google Gemini, Jasper, Copy.ai, and any other AI text generator. Simply paste your text to check if it's AI-generated.
What should I do if my text is detected as AI?
If our AI detector flags your text as AI-generated, you can use our AI humanizer to rewrite it. The humanizer transforms AI content into natural, human-like writing that passes GPTZero, Turnitin, and other detection tools while preserving your original meaning.
How is this different from GPTZero?
Unlike GPTZero, our AI detector is included with all plans. Plus, we include a built-in AI humanizer so you can fix any detected AI content instantly - something GPTZero doesn't offer.