FREE · NO SIGN-UP REQUIRED

Free AI Detector

Check whether text was written by AI, edited by AI, or written by a human. Paste text or upload a file to get AI-generated, human-written and mixed scores with sentence-level highlights for ChatGPT, GPT-5, Gemini, Claude and more.

Detect AI Text for Free →

Why Lynote is the Best AI Detector?

More than a single percentage — a full report you can actually review.

• 99% Detection AccuracyHigh-confidence detection of AI-generated, human-written and blended content.
• Detects Leading AI ModelsCatches writing from ChatGPT, GPT-5, Gemini, Claude, LLaMA, Mistral and more — in one tool.
• Paraphrase DetectionIdentifies text that was paraphrased, refined or humanized by AI — not just exact duplicates.
• 50+ LanguagesEnglish, Spanish, French, German, Portuguese, Chinese, Arabic and many more.
• Safe & ConfidentialDrafts, essays and client texts stay confidential — never used for model training.
• AI, Mixed & Human ScoresGet AI, human and blended scores with sentence highlighting so you know exactly what to review.

How to Use the Free AI Detector

Three steps from text to a review-ready report.

1. Step 1Paste Text or UploadAdd your text directly or upload a PDF, DOCX or TXT file to prepare it for AI detection.
2. Step 2Click Detect AILynote checks sentence patterns, word choice, predictability and signals linked to AI writing tools.
3. Step 3Review the ResultsSee AI-generated, human-written and mixed scores, then review the highlighted sentences.

What Lynote Detects

Core signals of machine-made writing — checked at the sentence level.

• Pattern RepetitionRepeated phrasing and sentence structures typical of AI output.
• Predictable RhythmUniform sentence rhythm and low burstiness.
• Low Lexical VarianceLimited vocabulary range and safe, general word choice.
• Model-Specific HabitsChatGPT-style phrasing, Claude-style structure, Gemini-style synthesis.

How to Interpret Your Report

• AI ScoreHow closely the text resembles AI-written writing.
• Mixed ScoreDetects documents containing both human and AI-written parts.
• Human ScoreHow closely the text resembles human-written writing.
• Highlighted SentencesSpecific lines flagged for detailed review — instead of guessing from one number.

Flagged as AI? What to Do

• Analyze the ReportIdentify which elements were detected — redundancy, predictability or generic language.
• Review Your SourcesNotes, outlines, citations and edit history help prove a text's origin.
• Revise the Flagged PartsAdd specifics, rewrite formulaic transitions and vary sentence rhythm.
• Re-Test After EditingCheck the revised version again — and never rely on a single AI score alone.

Who Uses This AI Detector

A practical review step for anyone working with AI-assisted writing.

• StudentsFinal check before submitting essays or assignments after using AI for brainstorming.
• EducatorsReview student writing with sentence-level highlights, combined with classroom judgment.
• Content CreatorsKeep articles, newsletters and scripts sounding original.
• SEO Specialists & MarketersReview blogs, landing pages and briefs before they go live.
• HR & RecruitersScreen cover letters and written assessments with a human reviewer in the loop.
• Writers & FreelancersCheck work before delivery and polish anything that sounds too automated.

Frequently Asked Questions

Is this AI detector free?

Yes. Lynote offers a free AI detector for checking text online — paste text or upload a document and run your first AI check without creating an account.

Are AI detectors accurate?

AI detectors are useful, but no detector is perfect. Lynote gives sentence-level highlights so you can review the result instead of relying on one score alone.

How do AI detectors work?

They analyze writing patterns such as word choice, sentence rhythm, predictability and structure. AI-generated text often has smoother, more repeated patterns than human writing.

Can Lynote detect ChatGPT, GPT-5, Gemini and Claude?

Yes. Lynote is designed to check writing from ChatGPT, GPT-5, Gemini, Claude, LLaMA, Mistral and other major AI tools — including text edited or paraphrased after generation.

Does Lynote support languages other than English?

Yes. Lynote supports AI detection in 50+ languages, including English, Spanish, French, German, Portuguese, Chinese, Arabic and more.

Does Lynote save my text?

Lynote processes text securely and does not use your submitted content to train detection models — important for essays, client drafts, applications and internal documents.

Detect AI Text for Free →

This Space is a static landing page for Lynote's free AI detector. The interactive demo requires Hugging Face PRO hosting; the full product — paste, upload, detect, and review sentence-level highlights — is available at lynote.ai/ai-detector. No AI detector is perfect: scores are probabilistic signals, not proof of authorship, and false positives are possible — especially with short, formal, or highly structured writing.