[Help](https://revise.io/help)›AI detection score

# AI detection score

Last updated September 16, 2026

## Check a Document for AI-Generated Writing

AI detection score runs your document through a state-of-the-art AI-writing detector and reports how much of the text reads as human, AI-assisted, or AI-generated. It is available on the Pro and Max plans.

### Running a Score

1. Open the Review tab in the editor ribbon and click AI detection.
2. Revise shows how many words will be scored and what the run will cost before anything is sent.
3. Click Run AI detection. The result opens in a few seconds.

The score is saved with the document, so everyone you share it with can open the same result from the Last score button. A dot on that button means the text has changed since it was scored.

### Reading the Result

- Verdict - Human, Mixed, or AI, with a one-line summary.
- Breakdown bar - the share of the text classified as human, AI-assisted, and AI.
- Segments - each passage the detector examined, with its AI-assistance score and confidence.

### Cost and Limits

- Each run uses $0.05 per 100 words of your monthly AI allowance, the same allowance the AI agent draws from. A 600-word essay costs $0.30; a 2,000-word document costs $1.00.
- Documents must be between 50 and 2,000 words. The detector is unreliable on very short text, and longer documents are not yet supported.
- If you are past your allowance and have [Extra Usage](https://revise.io/billing) turned on, the run is charged there at the usual 25% premium.
- The text scored follows the suggestion view: with tracked changes pending, the final (as-if-accepted) text is sent.

Keep in mind: AI detectors are probabilistic. A score is a signal about the writing style, not proof of how a document was produced. Use it alongside your own judgment, and never as the sole basis for a decision about someone else's work.