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AI Content Detector

Estimate AI-associated writing patterns and review sentence-level signals without treating the score as proof of authorship.

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Detection Analysis

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Processing time varies
Detects GPT-4, Claude, Gemini & more
Only usage counts are stored by GPT-Human
Review multilingual results carefully

How GPT-Human AI Content Detector Works

The service returns heuristic signals and a confidence estimate; it cannot verify authorship.

Linguistic Pattern Recognition
Analyzes semantic consistency and grammatical token sequences typical of ChatGPT, Claude, and Gemini.
Perplexity Score Index
Measures token predictability. Since AI models prefer highly probable next words, low perplexity flags machine authorship.
Syntactic Burstiness Check
Measures sentence variance. Humans naturally mix short, punchy statements with long clauses, whereas AI writing is uniform.
Ensemble Database Check
Summarizes model-style patterns returned by the configured analysis provider; model attribution is not definitive.

Detection Examples

See how our detector analyzes text with sentence-level precision.

High AI Probability
High AI Probability89%

The implementation of advanced algorithmic systems in modern organizational frameworks has been demonstrated to significantly enhance operational efficiency metrics...

AI Probability89%

Likely GPT-4 generated

Human Written
Human Written7%

I've been thinking a lot lately about why some meetings feel completely pointless while others somehow change everything. It's not the agenda — it's the people...

AI Probability7%

Likely human-authored

Mixed Content
Mixed Content48%

Social media has transformed how brands communicate with audiences. It enables real-time engagement and creates opportunities for authentic storytelling that resonates deeply...

AI Probability48%

Partially AI-assisted

Detection Scenarios

Real-world use cases for AI content detection across industries.

Academic Integrity
Education

Academic Integrity

Educators may use the score as one review signal, never as the sole evidence in an academic-integrity decision.

Content Authenticity
Publishing

Content Authenticity

Editors and publishers verify that submitted articles are genuinely human-written, protecting readers and brand credibility.

Brand Protection
Marketing

Brand Protection

Marketing teams confirm that agency-delivered content wasn't lazily generated by AI — preserving authentic brand voice.

SEO Auditing
SEO

SEO Auditing

Digital agencies audit entire content libraries for AI-generated pages before publishing, avoiding search engine penalties.

Hiring & HR
HR

Hiring & HR

Do not use an AI-likelihood score as the sole basis for employment decisions or claims about a candidate's authorship.

Legal & Compliance
Legal

Legal & Compliance

Law firms and compliance teams verify that human-required documentation hasn't been delegated entirely to AI generation.

AI Detector FAQ

Know exactly what you're publishing.

Detect AI content in seconds. Free to start — no credit card required.