AI Content Detector: Detect AI-Generated Text in Seconds
Paste or upload any text to instantly scan for content generated by ChatGPT, Claude, Gemini, or DeepSeek.
Scan any content for AI — three ways to detect AI text
Free ChatGPT Content Detector
Instantly identify text written by ChatGPT, GPT-4o, or any OpenAI model — no account needed.
Scan Content for AI Writing
Deep linguistic analysis measuring perplexity and burstiness to expose AI-generated sentence patterns.
Check AI Plagiarism Online
Go beyond copy-paste matching — identify structural AI fingerprints that traditional plagiarism tools miss.
How to scan for AI content
Paste or Upload
Drop your text or file into our secure AI scan window.
AI Content Scan
Our engine scans for low burstiness, fixed perplexity, and structural patterns unique to AI models.
Review
Get an instant report showing human vs. machine-generated probabilities.
How our AI scan technology identifies machine-generated text
In 2026, spotting AI-generated content requires more than keyword matching — our engine combines NLP with linguistic fingerprinting to tell human writing from machine patterns.
Predictive Text Patterns & Perplexity
LLMs like GPT-5 and Claude 4 are "probability engines" — they predict the next most likely token based on training data.
Structural Rhythm: Burstiness & Variance
AI can use complex words, but often fails to replicate the natural ebb and flow of human prose.
Machine Learning Content Validation
Transformer-based classifiers trained on billions of human vs. synthetic text pairs recognize deeper patterns.
Why 100% accuracy is a myth — and why we're closer than most. No detector can claim absolute certainty; the line between "highly edited AI" and formal human writing is thin. By weighing perplexity, burstiness, and stylometric data together, we provide a probabilistic confidence score that's the most reliable signal available today.
Solutions built for every professional need
From classrooms to newsrooms, our AI detector gives you the precision you need.
Protecting Academic Integrity
Maintaining student academic honesty in the age of GPT-5 requires more than a basic scanner.
SEO-Ready & Human-Centric
Helpful content ranks — but "AI slop" is systematically demoted. Stay ahead of the curve.
Upholding Journalistic Integrity
Disclosure of AI usage is the new standard for trust across newsrooms and publishers.
Why most AI checkers fail — and how we don't
The biggest problem with legacy detection isn't missing AI — it's falsely accusing humans.
Detects output from
Scan and detect AI generated content from all major models — in one free tool.
Why writers, editors, and teams trust ContentScan
ContentScan is a free AI text checker built to catch content from ChatGPT, Claude, Gemini, and DeepSeek — not just flag it, but show exactly which sentences triggered the result. Unlike a traditional plagiarism checker, which only compares text against existing sources, an AI content detector looks at how the text was likely produced: word predictability, sentence rhythm, and the structural patterns generative models leave behind.
Whether you're a teacher checking a batch of essays, an editor screening AI-generated content before publishing, or a content marketer verifying that a freelancer's draft is fully human-written, ContentScan works as a fast, no-signup AI content checker — a practical GPTZero alternative for teams that want sentence-level detail instead of a single opaque score.