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AI Detector for Responsible AI Detection
AI Detect analyzes text for signs of AI-generated writing and returns a human-likelihood score, reading-ease score, and grade-level estimate. Use the result as a signal—not a verdict.
Five free scans per day · Up to 750 words per scan
Free AI detector
Check text for AI-generated writing
Paste a representative passage below. AI Detect will estimate how human-like the writing appears and add readability context.
AI Detector
Detect AI in your content for free.
AI Humanizer
Revise text for a more natural writing style.
Recent History
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Detection Score
Readability
Rates how easy the text is to read on a scale from 0 to 100 — higher scores mean easier reading.
Grade Level
Indicates the U.S. school grade level needed to understand the text — higher education levels mean more complex reading.
Detection scores are probabilistic estimates. Do not use a score by itself to make academic, employment, or disciplinary decisions.
AI detection, explained
What is an AI detector?
An AI detector is a screening tool that estimates whether a passage resembles text produced by a generative AI system. It analyzes patterns across the submitted writing and returns a probability-style result.
AI detection cannot inspect a document's true authorship history or prove who wrote it. AI Detect therefore presents its result as a signal to investigate, alongside reading-ease and grade-level context—not as a verdict.
The short answer
AI Detect checks whether writing looks more human-like or AI-like. The score can focus a review, but no AI detection tool can establish authorship with certainty.
From text to useful context
How AI Detect works
Run an AI detection check in three steps. The free plan includes five scans per day with up to 750 words in each scan.
- 1
Add your text
Paste a representative passage into the detector. Paid plans also support text extraction from PDF, DOCX, TXT, and common image files.
- 2
Run the analysis
AI Detect evaluates the passage for generated-writing patterns while separately calculating established readability measures.
- 3
Review the result
Use the human-likelihood, reading-ease, and grade-level results to decide what deserves closer human review.
More than one number
Understand your AI detection report
Each metric answers a different question. Read them together instead of treating one score as conclusive.
- Human-likelihood score
- A 0–100 estimate of how strongly the passage resembles human writing. Higher is more human-like, not a guarantee that a person wrote it.
- Reading ease
- A Flesch Reading Ease score based on sentence length and word complexity. Higher scores generally indicate easier reading.
- Grade-level estimate
- A Flesch–Kincaid estimate of the U.S. school grade level typically needed to understand the passage.
- Scan history
- Signed-in users can revisit recent checks, making it easier to compare drafts and monitor revisions over time.
Responsible use
AI detection is evidence, not proof
False positives and false negatives are possible. Short text, heavy editing, predictable formats, technical prose, and language background can all affect a detector's output.
Peer-reviewed research in Patterns found that several GPT detectors disproportionately misclassified writing by non-native English authors. Current Ofqual guidance similarly says detection tools should be sources of evidence, never sole determinants.
A better review process
- Scan a complete, representative passage instead of a single sentence.
- Compare the result with drafts, revision history, sources, and citations.
- Ask the writer to explain their research and editing process when stakes are high.
- Account for genre, technical language, templates, and the writer’s language background.
Model coverage
Can AI Detect check ChatGPT, Claude, and Gemini writing?
AI Detect is a general AI content detector. It is designed to look for patterns that can appear in prose from ChatGPT, Claude, Gemini, Llama, and other language models. It does not claim to identify the exact source model.
AI detection is not plagiarism detection
AI detection estimates whether language patterns resemble generated text. A plagiarism checker searches for matching passages in other sources. Those are different questions, and AI Detect does not perform a plagiarism database search.
Built for review workflows
Who uses AI detection?
AI Detect gives different reviewers a consistent place to start, while keeping the final judgment with a person.
Educators
Use a score as one signal in a documented review process—not as an automatic misconduct verdict.
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AI detector FAQ
Practical answers about AI detection, score interpretation, and the free AI Detect plan.
What is AI Detect?
AI Detect is a web-based AI detector that analyzes text for patterns associated with AI-generated writing. It returns a human-likelihood score plus readability and U.S. grade-level estimates.
Is the AI detector free?
Yes. The free plan includes up to five AI detection scans per day and accepts up to 750 words per scan. Paid plans increase the scan, word, and file-upload limits.
What does the percentage score mean?
The percentage is an estimate of how strongly the submitted text resembles human writing. A higher human score means the passage contains more patterns associated with human-written text; it is not proof of authorship.
Can an AI detector be wrong?
Yes. AI detectors can produce false positives and false negatives, especially with short, heavily edited, formulaic, technical, or non-native English writing. Treat every score as a screening signal and review other evidence before making a decision.
Can AI Detect identify ChatGPT, Claude, or Gemini text?
AI Detect is a general AI text detector intended to analyze patterns that can appear in generated prose from systems such as ChatGPT, Claude, Gemini, and other language models. The result does not identify which model produced the text.
Is AI detection the same as plagiarism detection?
No. AI detection estimates whether writing patterns resemble generated text. Plagiarism detection compares text with existing sources to find matching or copied passages. AI Detect is not a plagiarism checker.
Should an AI detection score be used as proof of misconduct?
No. A detection score should never be the sole basis for an academic, hiring, publishing, or disciplinary decision. Use it to guide a closer review of drafts, citations, revision history, and the writer’s explanation of their process.
How much text should I check?
AI Detect accepts text with at least 10 characters, but a longer, representative passage usually provides more useful context than a sentence or fragment. The free plan supports up to 750 words per scan.
About the product
About AI Detect
AI Detect is a web-based AI detection product operated by XYZAI, Inc. It combines generated-text screening with reading-ease and grade-level analysis, plus optional humanization tools on paid plans.
Product information reviewed:
Questions? Contact support or read the privacy notice.
Check your text with AI Detect
Start with a free AI detection scan, then use the result as one part of a careful human review.