Free AI checker

Free AI checker for text and images

Paste text or upload an image. Check AI probability, confidence, and the strongest reasons without accounts, payments, or saved uploads.

Check text Check image

Step 1

Paste text

0 words

Paste text or choose a sample above.

Privacy: signed-in checks save summaries only, never full raw text.

Result

Waiting

Run a check to see AI probability, confidence, key reasons, and next steps.

01

AI probability

AI vs human estimate

02

Human-like cues

Human-like context

03

Calibration

Confidence and next steps

Context only. Scores can help you review text, but they do not prove authorship or origin.

Step 1

Upload image

Max 8 MB

Drag, paste, or choose an image.

Image checks need a free account. Results are saved to your private history; the original image is not kept.

Result preview

Upload an image to check AI probability

The check returns probability, reasons, and metadata without claiming proof.

Waiting
Context only. Scores can help you review images, but they do not prove authorship or origin.

AI probability is an estimate to help you review content. It is not proof that someone did or did not use AI.

  1. Probability

    Scores estimate likelihood. They are not proof.

  2. Reasons

    See what affected the result.

  3. Privacy

    Anonymous checks are not saved to your account. Sign in when you want saved history.

Questions

What can I check for free?+

Text and supported image files. Essay and slop pages use the same text checker with a different context.

Can this prove AI authorship?+

No. AI Checker Lab returns probability estimates to help you review content. It should not be used as proof or an accusation.

Does AI Checker Lab save my checks?+

Anonymous checks are not saved to an account. Signed-in users can save recent check history with a short preview, scores, and result details so they can review past results.

Why can AI checkers disagree?+

AI detection is uncertain. Different tools weigh style, length, topic, and evidence differently, so context matters.

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