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AI Review Detector

Check product, app and business reviews for AI-generated text. Paste one review above, or check a batch of reviews or a CSV file below.

I recently purchased this stainless steel water bottle, and I must say it has truly exceeded my expectations. The sleek design is both elegant and practical, making it perfect for the gym, the office, or outdoor adventures. It keeps beverages cold for up to 24 hours and hot for up to 12, which is incredibly convenient for my busy lifestyle. The leak-proof lid provides peace of mind, and the durable construction ensures it will last for years to come. Overall, I highly recommend this product to anyone looking for a reliable, high-quality water bottle that combines style and functionality.
Try a sample

Selectable text is required. Scanned images need OCR first.


Check many reviews at once

Paste reviews separated by a blank line (or one per line), or upload a CSV export with a review text column. Each review gets its own score. Up to 25 reviews per check; sign up free to check up to 100.

Automate AI detection with the API

Try an API key, run an example, and review usage before choosing a paid plan.

Usage pricing and calculators · API billing is separate from Pro.

Get it everywhere you write

Use the AI detector extension to check text on other webpages. For grammar suggestions and writing assistance, install the Sapling writing extension.

Install AI Content Detector Install Sapling

Developed by former researchers at:
Cal Stanford
Meta Google

Check reviews for AI-generated text

Paste a single product, app, restaurant or service review into the detector above, or check a whole batch at once: paste reviews separated by blank lines, or upload a CSV export from your store, review platform or support tool. Each review gets its own AI probability, and the results download as a CSV you can sort and filter.

No current AI content detector (including Sapling's) should be used as a standalone check to determine whether text is AI-generated or written by a human. False positives and false negatives will occur.

  • Most reviews are short, and short texts give less reliable scores. Reviews under about 150 characters are marked low confidence; reviews under 40 characters aren't scored.
  • A high score means the wording looks machine-generated, not that the review is fake. People do use AI tools to polish an honest review, and a human can write a fake one.
  • Combine the score with other signals, such as account age, purchase verification and posting patterns, before removing a review or penalizing a reviewer.

Screen reviews at scale

Marketplaces, app stores and review platforms can run the same model through the AI Detector API. A batch request scores up to 10 reviews in one call, and each result has the same overall score and per-sentence predictions as a single check, so you can flag reviews for moderation as they arrive.

Talk to us about review moderation

Tell us about your platform, your review volume and how you moderate today. We'll help you set up screening.

Frequently asked questions

How do I check if a review was written by AI?

Paste the review into the detector on this page. To check many reviews, paste them separated by blank lines or upload a CSV file, and the tool scores each one. You get an AI probability for every review and can download the results as a CSV.

Does a high AI score mean a review is fake?

No. The score estimates whether the wording was generated by an AI model. A genuine customer may have used AI to write up a real experience, and a fake review can be written by hand. Use the score to decide which reviews to look at more closely.

How accurate is AI detection on short reviews?

Less accurate than on long text. With only a sentence or two there is little signal to score, so reviews under about 150 characters are marked low confidence and reviews under 40 characters aren't scored. Longer, detailed reviews give the most reliable results.

Can I screen reviews automatically on my platform?

Yes. The AI Detector API accepts single texts or batches of up to 10 and returns a structured JSON score for each. Contact us to discuss volume pricing for moderation workloads.

Checking other kinds of writing? Use the general AI Content Detector or the PDF & Word AI Detector.