Free AI Detector: Identify AI-Written Content Instantly

Our AI detector is 99.98% accurate and 100% free. Check any text for AI-generated content from ChatGPT, Claude, Gemini, and more.

Type, paste, or upload your text.

1000 word limit

AI Detection results

AI Content Score

Scan your text to check for AI content

AI Detected
Human
Resembles AI text
—%
No AI text patterns found
—%

AI-generated content evolves rapidly. These results should not be used to punish students or writers — instead consider them as part of a holistic assessment.

Trusted by the highest performing students & professionals

Stanford University
MIT
Harvard Business School
UC Berkeley
Cornell University
University of Waterloo
University of Pennsylvania
Columbia University
Mercury
Lightspeed
Forbes
Vend
Wiz
Rho
Traba
PwC

99.98%

Detection Accuracy

1.2%

False Positive Rate

6,000+

Users

4.9/5

User Rating

Frequently Asked Questions about AI Detector

TypeOS achieves 99.98% detection accuracy with a false positive rate of just 1.2%. Our multi-model detection engine combines perplexity analysis, writing pattern recognition, and linguistic fingerprinting for reliable results.

TypeOS detects content generated by all major AI tools including ChatGPT (GPT-3.5, GPT-4, GPT-4o), Claude, Gemini, LLaMA, Mistral, and others. The detection engine is continuously updated as new models are released.

Yes. You can scan text for AI content at no cost. Free users get generous daily scan limits. Premium plans offer higher limits, bulk scanning, and detailed reports.

TypeOS AI Detector is built for educators verifying student work, publishers maintaining editorial standards, researchers confirming writing integrity, and content teams auditing quality across their workflow.

Yes. Our detection engine is trained to identify structural and linguistic patterns that persist even after light editing or paraphrasing. It analyzes writing at the sentence level, not just word choice.

No. Text submitted through the detector is not stored, logged, or used to train models. Your content stays private.

False positives can occur when human writing matches patterns common in AI-generated content — for example, formal academic writing with consistent sentence structure, or technical writing with standardized terminology. Try varying sentence lengths, adding personal examples, or including conversational elements, then scan again.

Yes. Educators frequently use our AI checker to assess student assignments. We recommend using AI detection as one part of a holistic evaluation rather than the sole basis for academic integrity decisions.