How does the AI detector work?
It reviews sentence patterns, repetition, vocabulary diversity, and model-like phrasing to estimate whether text appears AI-written, mixed, or human-written.
Free AI Detector
Free AI Checker & Detector
Detect AI-written text instantly. Get an AI score, sentence-level highlights, writing pattern analysis, and model attribution.
Paste text to analyze
0 words
Awaiting input
0%
AI-generated
0%
Mixed
100%
Human
Writing pattern analysis
- › Writing style and tone analysis
- › Repetitive phrasing or structure patterns
- › Vocabulary diversity and word choice
AI model attribution
ChatGPT
0%
Claude
0%
Gemini
0%
Grok
0%
DeepSeek
0%
HumanizeAI provides writing-quality insights for clarity, tone, and readability. Do not use it for academic dishonesty or misleading submissions.
Why choose us
A detector built for action
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Detects major AI models
Check writing patterns associated with ChatGPT, GPT-4o, Claude, Gemini, Grok, and DeepSeek.
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Sentence-level highlights
Review exactly which sentences are likely AI-generated, mixed, or human-written.
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Built-in humanizer
Move from detection to rewriting without switching tools or workflows.
AI detector quick answers
How to check text for AI
- 1Paste the textAdd at least 15 words from an article, essay, email, or draft you want to inspect.
- 2Run the AI checkGet an AI score, sentence-level signals, writing pattern notes, and possible model attribution.
- 3Review the evidenceUse the highlights as guidance, then make your own judgment before editing or publishing.
Can it identify ChatGPT or Claude content?
The detector can flag writing patterns associated with tools such as ChatGPT, Claude, Gemini, Grok, and DeepSeek, but model attribution should be treated as a probability signal.
What should I do after detection?
Review highlighted sentences, verify the facts, and rewrite sections that need clearer human rhythm or stronger editorial voice.
AI detector FAQ
Is the AI detector free?
Yes. You can paste text and run an AI writing check from the detector page.
Is an AI score always definitive?
No. AI detection is probabilistic. Use the score and highlights as editorial signals, not as the only evidence.
Can I humanize detected text?
Yes. After reviewing the detection result, you can use the built-in humanizer to rewrite sections that need a more natural voice.