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AI Review Detector for Product and Service Reviews

Paste a product, restaurant, travel, or app review into this AI review detector. Slop or Not checks the English wording for patterns associated with LLM output and returns a probability. That answers a narrow question about the text, not whether the reviewer was paid, used the product, or told the truth. Online, the pasted text first goes to Numen's server for a hidden-character scan, is processed in memory, and is discarded with the response, so nothing is stored. The separate AI check runs on Numen's private Mac server, and the text is deleted after processing. The iPhone, iPad, and Mac apps run both checks on-device.

Catches 99.5% of AI text at a 5% false-positive rate, scored by RAID, the public benchmark, not by us.

Paste a paragraph or a whole thesis. The iPhone and Mac apps have no word cap and no monthly word budget.

  • Paste English textSchool essays, product reviews, captions, articles, and social posts up to 20,000 characters.
  • ResultA probability verdict, AI score, and readability analysis.
  • PrivacyDeleted the moment the check finishes. We never keep your text.
English text only. Deleted after processing.0/20000

AI detection is probabilistic. Results can vary with new AI models and evasion methods. Human writing that sounds formal can be flagged as AI.

Scored by a fine-tuned transformer model, not a word-pattern checker.

What it checks

What Can an AI Review Detector Tell You?

Generic praise that could describe many unrelated products or services

Repeated sentence structure across benefits, drawbacks, and conclusions

Polished explanatory language with little concrete firsthand detail

Good Uses

  • Triaging review text that needs a closer platform moderation check
  • Checking a suspicious review before relying on it for a purchase
  • Reviewing imported testimonials before publishing them on a product page

Limits to Know

  • Short reviews provide little language evidence and can be hard to classify
  • Templates, translation, and editorial cleanup can make human reviews look unusually regular
  • The detector does not evaluate timing clusters, reviewer history, incentives, or factual accuracy

FAQ

AI Review Detector Questions

Does an AI review detector find fake or paid reviews?

No. It checks whether the English wording resembles AI-generated text. A human can write a fake review, and a real customer can use AI to edit an honest one. Payment, deception, and factual accuracy require separate evidence.

What writing patterns deserve a closer look?

Generic praise, repeated structure, and missing firsthand detail can justify a closer read. None of those clues proves AI use on its own, and a detector result remains supporting evidence.

What else should I check before trusting a review?

Look at timing clusters, the reviewer's history, disclosed incentives, purchase verification, and whether factual claims match the product. Those checks sit outside the text detector's verdict.

Does the online checker store review text?

The pasted text first goes to Numen's server for a hidden-character scan, is processed in memory, and is discarded with the response, so nothing is stored. The separate AI check runs on Numen's private Mac server. The text is not sent to third-party AI providers and is deleted after processing. The iPhone, iPad, and Mac apps run both checks on-device.

Run the Next Check on Your iPhone or Mac

The Slop or Not app checks images and text on-device, so nothing you check ever leaves your device.

Download on the App Store

Related checks

Compare Related Detector Workflows

AI Text Detector

Check whether writing looks AI-generated with Slop or Not. Paste text online for a quick check, or use the iPhone and Mac apps on-device.

Hidden Character Detector

Free hidden character detector: scan text for invisible Unicode, smart punctuation, and lookalikes, then copy clean text; Numen never stores the passage.