Instantly check ChatGPT, GPT-4, Claude, or Gemini text — then humanize it into publish-ready writing. 25 total checks (22 core metrics power your AI % — 3 supplemental scans add extra depth), plus visual maps, sentence heatmaps, and zero data stored.
Start AnalyzingWhat powers your analysis
From landing to publish-ready verdict — everything happens in your browser.
Paste any article or blog post below and our engine will break it down across multiple linguistic dimensions.
Paste any AI-generated article below and our engine will transform it into publish-ready human writing that clears our online publishing gate.
AI-generated likelihood
The percentage is our estimate of how likely the full article was written by AI — not what fraction of words are AI. It comes from 22 core metrics (we also show 3 supplemental scans for extra context, but those do not change this %).
Lower AI % plus high Human Authenticity clears our publish gate — meaning the article reads as genuinely human-written for online readers and search engines.
v5.3 multi-engine calibration: requires multiple signal families before high AI scores. Heuristic analysis — not a 100% authorship guarantee.
Each item below is why a negative badge appeared. Click to jump — a bright pink Edit here box stays until you re-analyze. For sentence-by-sentence fixes see Sentence-Level Heatmap below; for one copy-paste rewrite document use Complete fix brief for AI editor after the heatmap.
How template-like your word choices are — higher = more AI-like wording.
How stable your exact wording is under small changes — higher = more AI-like.
Measures local word predictability. Lower predictability may indicate AI-generated text.
Sentence length variation. Humans write with more variability than AI.
Type-token ratio and unique word usage patterns.
Repeated n-gram and phrase patterns common in AI output.
Known AI-typical phrases and filler expressions detected.
Flesch-Kincaid grade level and reading ease score.
Measures diversity of sentence starting patterns.
Natural contraction usage — humans use more contractions.
Concrete details: names, numbers, dates. AI stays vague.
Subjective language, personal voice, and emotional markers.
How frequently transition words appear. AI overuses connectors.
Variety of advanced punctuation usage in the text.
Coefficient of variation in word lengths — uniform = AI-like.
Qualifying/hedging phrases — AI overuses cautious language.
Enumeration structures common in formulaic AI writing.
Variance in grammatical complexity — AI writes uniformly.
Inter-sentence vocabulary overlap — very high = AI-like.
Structural sentence habits — supplemental only; does not affect your AI %.
Language quality fingerprint — supplemental only; does not affect your AI %.
Known AI phrase tells — supplemental only; does not affect your AI %.
See which words were the obvious next choice versus surprising — powered by predictability analysis (v5-style). AI text leans green and yellow; human writing uses more purple surprises.
Maps structural habits — lists of three, parallel negatives, outline endings, and artificial “from X to Y” ranges that AI overuses.
A category breakdown of word choices, vague claims, promotional tone, and writing rhythm — easy to read at a glance.
Phrase-level fingerprint from 45+ pattern rules. Severity-colored map shows what was found and how strong each signal is — conservative scoring avoids false flags.
Color-coded by AI likelihood. Red and yellow sentences have step-by-step fix suggestions below — every flagged phrase, word, and rhythm issue with exact actions to reach 100% human.
Each card lists detected AI phrases, buzzwords, and voice problems plus numbered steps to rewrite that sentence as genuinely human. Click Jump to editor or the heatmap sentence to edit in place.
One document with every AI and mixed sentence, phrase, and word — plus context, replacements, and step-by-step rewrite instructions. Copy and paste into ChatGPT, Claude, or any AI editor to convert the full article to 100% human voice.
Visual maps, pinpoint flags, and a full linguistic profile of your document.
Trusted by writers, students, and publishers who need to check AI content, detect ChatGPT text, and humanize AI articles before publishing.
Get instant AI detection results as our free AI checker processes essays, blog posts, and articles entirely in your browser — no signup or upload delays.
Visual sentence-by-sentence scoring so you can pinpoint exactly which parts seem AI-generated.
Your text never leaves your device. Zero data collection, zero tracking, zero storage.
22 core metrics calculate your AI % (perplexity, burstiness, phrases, Zipf's law, and more). 3 supplemental scans add pattern depth without changing your score.
Flesch-Kincaid grade level analysis to understand the text's complexity and reading ease.
120+ phrases commonly found in ChatGPT, GPT-4, and Claude writing — highlighted in context so you know exactly what triggers AI detectors like GPTZero and Turnitin.
Check if your essay, article, or homework was written by AI — then humanize AI text to sound naturally human.
Copy and paste any article, blog post, essay, or written content into the analyzer.
Our engine examines perplexity, burstiness, vocabulary, repetition, and known AI patterns.
Get a comprehensive dashboard with an overall score, metric breakdowns, and a sentence heatmap.
Everything you need to check AI-generated text and humanize AI writing — without paying for GPTZero, Copyleaks, or Originality.ai.
ClouHost is a free AI content detector built for bloggers, students, marketers, and editors. Paste any article, essay, or homework assignment and our AI writing detector scores perplexity, burstiness, vocabulary diversity, contractions, sentence openers, and 15 more linguistic signals that separate human prose from machine-generated text.
Unlike basic yes/no tools, our ChatGPT detector shows a sentence-level heatmap so you see exactly which paragraphs read as AI. Flagged phrases from GPT-4, Claude, and Gemini templates are listed with one-click jump-to-edit — faster than manual proofreading and more detailed than a simple AI checker percentage.
Need to humanize AI text before publishing? Switch to the Humanize tab and transform robotic AI copy into natural writing. Our AI text humanizer removes formulaic patterns, varies sentence rhythm, and clears our publish gate so content reads authentically human to readers and search engines alike.
Your text never leaves your device — ideal for confidential drafts, unpublished manuscripts, and student essays. ClouHost works as a private AI plagiarism checker alternative with no account required. Upload PDF, DOCX, or HTML and analyze instantly.
Common questions about AI detection, ChatGPT checking, and humanizing AI text.
An AI content detector analyzes linguistic patterns — perplexity, burstiness, vocabulary, and known AI phrases — to estimate whether writing came from a human or from tools like ChatGPT, GPT-4, Claude, or Gemini.
Paste your text into our free ChatGPT detector, click Analyze Text, and review the AI probability score, sentence heatmap, and flagged AI phrases. Results appear in seconds with no signup.
Yes. ClouHost is a 100% free AI detector and AI humanizer. No credit card, no account, and no hidden word limits for standard use.
No AI checker is 100% accurate — your AI % comes from 22 calibrated core metrics (plus 3 supplemental scans for extra context). ClouHost uses v5.3 multi-engine calibration and reliability indicators so you know when to trust the result.
An AI humanizer rewrites machine-generated text to sound natural. Ours removes robotic phrasing, varies sentence length, and produces human-sounding copy that clears our publish-ready authenticity gate.
Yes. Paste AI-generated content into the Humanize tab. Our AI text humanizer rewrites it into natural prose. Always review output and use responsibly — we help improve writing quality, not deceive readers.
Yes. The engine is tuned for modern LLM patterns from ChatGPT, GPT-4, Claude, Gemini, and other popular AI writing tools used for blogs, essays, and marketing.
No. Analysis runs entirely in your browser. Nothing is stored, logged, or sent to our servers — your essays and articles stay completely private.
ClouHost offers a free GPTZero alternative with 25 checks (22 core + 3 supplemental), live sentence heatmaps, an integrated AI humanizer, and 100% client-side privacy. Turnitin and GPTZero require accounts; we do not.