Undetectable AI

How accurate is Undetectable AI's Free AI Detector?

Our detector uses advanced linguistic, semantic, and pattern-analysis models trained specifically to identify AI-generated writing. Independent studies rank our detection model as up to 99% accurate, depending on the language, text length, and writing style.

Who should use Undetectable AI's AI checker?

Our free AI Checker is indispensable for marketers, SEO experts, writers, bloggers, and researchers who need reliable tools to verify the authenticity of content. Whether you're concerned about maintaining originality in creative work or ensuring compliance with ethical standards in content creation, our AI detector provides the necessary insights and analysis to support informed decision-making.

Can this AI Detector identify text written by ChatGPT or GPT-5?

Yes. Our tool is trained specifically to detect ChatGPT, GPT-4, GPT-5-style models, Claude, Gemini, and Llama.

Is the AI Detector free to use?

Yes, our Free AI Detector requires no signup and gives instant results. Simply paste your text and click "Check for AI."

How does Undetectable AI compare to other AI detectors?

Independent tests and industry reviews rank us among the most accurate AI detection tools available.

Does the AI Checker work on paraphrased or rewritten AI content?

Yes. Our tool is designed to identify rewritten or obfuscated AI content, including material modified by paraphrasing tools, and other AI rewriters.

What types of text can the AI Detector analyze?

You can check essays, blog posts, academic writing, emails, SEO content, research papers, and any long-form or short-form text. The AI Checker supports multi-language detection as well.

Can the AI Content Detector help avoid AI flags in schools or workplaces?

Yes. Our tool shows the AI detection probability from major checkers, helping students and professionals understand whether their text could be flagged. You can optionally humanize the text afterward for safer use.