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Ahrefs AI Content Detector
Free no-signup AI content detector for short text, part of Ahrefs' free SEO writing tools.
AI Detectors from USD 0.00
Tools we ran through the detector panel ourselves
Listings where we have run the same fixed test texts through the tool and through six detectors, on a stated date.
What has to be true to appear here
A review exists with a published panel run: the same test texts, the same six detectors, before and after, with the test date.
The detectors in the panel
No panel run has been published yet. A dated result is the only honest form here: a humanizer that beat a detector in March may fail it in September, because the detector changed and the tool did not. Until then, these are the detectors the panel is made of.
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Copyleaks AI Content Detector
Enterprise AI and plagiarism detection in one report, with LMS integrations and 30+ language support.
AI Detectors from USD 13.99
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Crossplag AI Content Detector
Free English-only AI content detector offered alongside Crossplag's cross-language plagiarism checker.
AI Detectors from USD 0.00
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Decopy AI Detector
Free no-login AI detector handling up to 200,000 characters with shareable online or PDF reports.
AI Detectors from USD 9.99
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Detecting-AI
Free AI detector taking 15,000 characters per scan without signup, plus detector and humanizer APIs.
AI Detectors from USD 7.00
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Grammarly AI Detector
Free AI detector from Grammarly returning a percentage AI score, with a Pro agent for flagged phrases.
AI Detectors from USD 12.00
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Isgen
Multilingual AI detector with sentence-level highlighting, bulk scanning and an academic-priced plan.
AI Detectors from USD 8.00
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Originality.ai
AI detection plus plagiarism, fact and readability checks aimed at web publishers and content agencies.
AI Detectors from USD 12.95
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Pangram Labs
Research-led AI text detector for schools and platforms, with a free daily quota and a usage-based API.
AI Detectors from USD 20.00
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QuillBot AI Detector
Free AI detector inside QuillBot's writing suite, with sentence highlights and a 1,200-word free scan.
AI Detectors from USD 8.33
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Sapling AI Content Detector
Free AI content detector with sentence-level scores, a Chrome extension and a metered developer API.
AI Detectors from USD 12.00
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Scribbr AI Detector
Free student-facing AI detector with paragraph-level feedback and a paid premium GPT-4-capable tier.
AI Detectors from USD 19.95