Free AI Text Detector

An AI text detector — also called a ChatGPT detector, AI content checker, or AI writing detector — is a tool that analyses text to determine whether it was written by a human or generated by an AI model such as ChatGPT, Claude, Gemini, Grok, or Llama. Using machine-learning classifiers trained on millions of human and AI-generated samples, these tools assign a probability score indicating how likely the text is to be AI-authored.

AI detectors measure statistical features like perplexity (how predictable word choices are) and burstiness (variation in sentence length). Human writing tends to be less predictable and more varied; AI-generated text is often more uniform. Our dual-engine system runs Sapling AI and ZeroGPT on your text simultaneously and combines their outputs into a single consensus score with sentence-level highlighting — significantly reducing false positives compared to single-model detectors.

AITextDetector.net is a free AI detector that identifies content written by ChatGPT, Claude, Grok, Llama, and other large language models. Whether you're a student checking an essay, an educator reviewing submissions, or a publisher verifying originality, our multi-engine AI content checker delivers clear, fast results.

Most AI detectors rely on a single model — ours doesn't. Depending on your plan, the system runs your text through Sapling AI and ZeroGPT simultaneously, then combines their outputs into a consensus score with per-engine detail. This dual-engine approach significantly reduces false positives and gives you a far more reliable AI-vs-human verdict.

AI detection is useful across many fields. Students can verify their own work before submitting to avoid unintentional AI flags. Teachers and professors use it to uphold academic integrity. Content editors and SEO managers check articles to ensure originality and maintain search rankings. Publishers screen guest posts and submissions. HR teams review job applications and cover letters. Businesses audit contractor-delivered content. Anywhere authentic, human-authored text matters, an AI checker adds an essential layer of quality assurance.

An AI humanizer — also known as an AI rewriter, AI bypass tool, or AI-to-human text converter — rewrites AI-generated content so it reads naturally while preserving the original meaning. Our built-in AI Humanizer uses GPT-4o (Standard and Advanced modes) and Claude (Premium mode) to paraphrase, restructure sentences, and introduce natural language variation. The rewritten text achieves a much lower AI-probability score while staying accurate, coherent, and grammatically correct — ideal for students refining AI drafts, marketers producing high-volume content, and non-native speakers polishing AI-assisted writing.

Every account starts with free monthly detection credits — no credit card needed. When you need more, Basic, Pro, and Enterprise plans unlock higher credit limits, dual-engine detection, and our built-in AI Humanizer (powered by GPT-4o and Claude) that rewrites AI-flagged text into natural, undetectable human writing.

Text you submit for detection is processed in real-time and never permanently stored for AI model training. Accounts are protected through Supabase Auth with email/password or Google Sign-In. We do not sell, share, or monetize your content or personal data.

Paste any text — an essay, article, email, academic paper, or social media post — into the editor and click Detect. Within seconds you'll see an AI-probability score, colour-highlighted sentences flagged as AI-generated, and a breakdown of each engine's verdict. Credits running low? Top up instantly with a credit pack or upgrade your plan — no long-term commitment required.