SEO.ai Free AI Content Detector is an online tool that estimates how likely a text was generated by AI models such as ChatGPT and GPT-4. It helps teams understand whether content may be flagged as AI-written—useful for SEO, content marketing, and education.
How it works
- Uses 4 AI-content detection models
- Analyzes up to 25,000 characters per check
- Paste your text, click “Test AI-content probability,” and get an instant probability score
- Lower scores (around 1%) suggest mostly human-written text; scores near 100% suggest a high likelihood of AI generation
Who it’s for
- SEO specialists monitoring AI content risk
- Copywriters and editors reviewing drafts
- Website owners maintaining content quality and audience trust
- Educators checking student submissions
Key benefits
- No registration required
- Free to use
- Handles large text inputs
- Fast results for routine checks


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