Identify text written by ChatGPT, Claude, Gemini, or any other AI with industrial-grade accuracy. The trusted free tool for academic integrity and professional content verification.
Our detection model is trained on millions of AI-generated and human texts, achieving 99% accuracy across all major AI models.
Detect content from ChatGPT (3.5 & 4), Claude, Gemini, Bard, Llama, Mixtral, and 15+ other AI language models.
Get detailed AI probability scores in under 2 seconds. Analyze passages, articles, essays, or entire documents instantly.
See exactly which sentences have high AI probability with color-coded highlighting for granular analysis.
Get a precise percentage score — not just a binary answer — so you can make informed decisions about the content.
Pro users can check multiple documents or large volumes of text simultaneously for educational or editorial workflows.
Check student submissions for AI-generated content. Ensure academic integrity with a reliable, accurate tool trusted by educators worldwide.
Verify that cover letters and application essays were genuinely written by candidates, not generated by AI assistants.
Maintain content quality standards by ensuring submitted articles and blog posts are authentically human-written.
Check your own work before submission to ensure it reads as human-written and won't trigger false positives in institutional AI detectors.
Our detector analyzes text patterns, sentence structures, vocabulary distribution, and linguistic features that distinguish AI-generated content from human writing. It compares these patterns against models trained on millions of known AI and human text samples.
Our detector identifies content from ChatGPT (GPT-3.5, GPT-4, GPT-4o), Claude (1, 2, 3), Google Gemini, Bard, Meta Llama, Mistral, Mixtral, Cohere, and 15+ other models. We continuously update our model as new AI systems are released.
Our false positive rate is below 1%. Some highly formal or technical human writing may occasionally score higher, but our system is specifically optimized to minimize false positives that would incorrectly flag human-written content.
Yes! Free users get 3 AI detection checks per month. Pro users get 30 checks per month with priority processing. Enterprise plans available for schools and organizations needing unlimited checking.
Partially. Our detector can catch most AI text that has been lightly humanized or paraphrased. However, heavily humanized text that has been significantly rewritten may score lower on AI probability.
The most accurate free AI detector. Check text from ChatGPT, Claude, Gemini and more instantly.
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