Question 1

How accurate is this AI checker?

Accepted Answer

Our AI checker reaches roughly 98% accuracy on typical English prose and highlights suspect sentences individually, so you can see exactly which parts look machine-written. No detector is perfect, though — treat the score as strong evidence, not absolute proof, especially for very short or heavily edited passages.

Question 2

Which AI models can it detect?

Accepted Answer

It recognizes the statistical fingerprints of all major text generators, including ChatGPT (GPT-3.5 and GPT-4), Claude, Gemini, and Llama-family models. Because it analyzes writing patterns rather than matching against one specific model, it also generalizes well to newer releases.

Question 3

Is the AI checker free to use?

Accepted Answer

Yes. You can paste text and get an AI probability score with sentence-level highlighting at no cost and without creating an account. Paid plans add higher word limits and extra features for heavy users.

Question 4

Do you store or share the text I check?

Accepted Answer

No. Text you submit is analyzed to produce your result and is not stored, published, or shared with third parties. Your drafts, student submissions, and client work stay private.

Question 5

Can a human-written text be flagged as AI?

Accepted Answer

False positives are possible with any detector, particularly for formulaic writing, non-native English, or text under a few dozen words. If a result surprises you, check a longer sample and look at which sentences were highlighted before drawing conclusions.

Question 6

How much text do I need for a reliable result?

Accepted Answer

Longer samples give better signals. We recommend at least 50-100 words; a few hundred words produces the most stable scores because the checker has more sentence-level evidence to work with.

Free AI Detector - Check if Text is AI Written

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