Best AI Content Detectors in 2026
Updated
AI content detectors can help you check writing for signs of AI generation or paraphrasing. Compare word limits and detection languages with batch scanning and API access, especially if you handle different volumes or workflows. Paraphrase detection and browser extension availability add other points to weigh, while free plans and paid-from pricing help frame costs. ContentDetector.org, AI Detectors.io, and GPTZero are among the options shown. Consider the languages and volume of material you expect to assess, then compare the listed access and checking features.
19 of 21 with known pricing have a free tier;0 apps show full bars: free, open, on most devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 1 | TrustOriginality.aiWeb · Android · iPhone · API | Three bars | 3 of 6 | €4.99/mo | 6.6 | ||
| 2 | AI Detectors.ioWeb · Windows · Mac · API · Extension | Three bars | 3 of 6 | $0.69/mo | 6.5 | ||
| 3 | ContentDetector.orgWeb · Windows · Mac · iPhone · Extension | Three bars | 4 of 6 | Free | 6.5 | ||
| 4 | GPTZeroWeb · API · Extension | Two bars | 1 of 6 | $8.33/mo | 6.4 | ||
| 5 | It's AIWeb · API · Extension | Two bars | 1 of 6 | $0.42/mo | 6.4 | ||
| 6 | Originality.aiWeb · API · Extension | Two bars | 1 of 6 | $12.95/mo | 6.4 | ||
| 7 | Winston AIWeb · API · Extension | Two bars | 1 of 6 | $5/mo | 6.4 | ||
| 8 | AI Detector ProWeb | Two bars | 1 of 6 | Free | 6.3 | ||
| 9 | AI-Content Detector MLWeb · Extension | Two bars | 1 of 6 | Free | 6.3 | ||
| 10 | AirnoWeb · API | Two bars | 1 of 6 | $19/mo | 6.3 | ||
| 11 | Detecting-AI.comWeb · API | Two bars | 1 of 6 | $0.58/mo | 6.3 | ||
| 12 | DetectoWeb | Two bars | 1 of 6 | $6.99/mo | 6.3 | ||
| 13 | GPTKitWeb · API | Two bars | 1 of 6 | $5/mo | 6.3 | ||
| 14 | Isgen AI DetectorWeb · API | Two bars | 1 of 6 | $8/mo | 6.3 | ||
| 15 | LearnawayWeb | Two bars | 1 of 6 | $33.25/mo | 6.3 | ||
| 16 | Mask AI DetectorWeb | Two bars | 1 of 6 | $10.99/mo | 6.3 | ||
| 17 | PangramWeb · API · Extension | Two bars | 1 of 6 | $1.67/mo | 6.3 | ||
| 18 | ProofademicWeb · API | Two bars | 1 of 6 | $15/mo | 6.3 | ||
| 19 | EyeSiftWeb | One bar | 1 of 6 | Free | 6.1 | ||
| 20 | Copyleaks AI DetectorWeb · API · Extension | One bar | 1 of 6 | $1.17/mo | 5.4 | ||
| 21 | Smodin AI DetectorWeb · Extension | One bar | 1 of 6 | $0.83/mo | 5.3 | ||
| 22 | Content Checker by AI AwareWeb | One bar | 1 of 6 | 5.0 | |||
| 23 | TheChecker.AIWeb · API · Extension | One bar | No | 1 of 6 | $8.25/mo | 5.0 | |
| 24 | ElucidaWeb | One bar | 1 of 6 | 4.8 | |||
| 25 | ClassGuardWeb | No signal | No | 1 of 6 | $10/mo | 4.7 |
Compare all 25 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | Detection languages | Word limit |
|---|---|---|---|---|---|---|---|---|
| 1 | TrustOriginality.ai | 6.6 | Free plan | €4.99/mo | Yes | |||
| 2 | AI Detectors.io | 6.5 | Free plan | $0.69/mo | Yes | 8.33 /mo | 25,000 words | |
| 3 | ContentDetector.org | 6.5 | Free plan | Free | Yes | |||
| 4 | GPTZero | 6.4 | Free plan | $8.33/mo | Yes | 5 languages | ||
| 5 | It's AI | 6.4 | Free plan | $0.42/mo | Yes | 7 /mo | 150,000 words | |
| 6 | Originality.ai | 6.4 | Free plan | $12.95/mo | Yes | 12.95 /mo | 30 languages | 10,000 words |
| 7 | Winston AI | 6.4 | Free plan | $5/mo | No | 10 /mo | 16 languages | |
| 8 | AI Detector Pro | 6.3 | Free plan | Free | Yes | 5 languages | ||
| 9 | AI-Content Detector ML | 6.3 | Free plan | Free | Yes | |||
| 10 | Airno | 6.3 | Free plan | $19/mo | Yes | |||
| 11 | Detecting-AI.com | 6.3 | Free plan | $0.58/mo | Yes | 7 /mo | ||
| 12 | Detecto | 6.3 | Free plan | $6.99/mo | Yes | 6.99 /mo | ||
| 13 | GPTKit | 6.3 | Free plan | $5/mo | Yes | |||
| 14 | Isgen AI Detector | 6.3 | Free plan | $8/mo | Yes | 8 /mo | ||
| 15 | Learnaway | 6.3 | Free plan | $33.25/mo | Yes | |||
| 16 | Mask AI Detector | 6.3 | Free plan | $10.99/mo | No | 10.99 /mo | 2,500 words | |
| 17 | Pangram | 6.3 | Free plan | $1.67/mo | Yes | 20 /mo | 24 languages | 300,000 words |
| 18 | Proofademic | 6.3 | Free plan | $15/mo | No | 23 languages | 3,500 words | |
| 19 | EyeSift | 6.1 | Free plan | Free | Yes | |||
| 20 | Copyleaks AI Detector | 5.4 | $1.17/mo | 30 languages | 300,000 words | |||
| 21 | Smodin AI Detector | 5.3 | $0.83/mo | 10 /mo | ||||
| 22 | Content Checker by AI Aware | 5.0 | No | |||||
| 23 | TheChecker.AI | 5.0 | No | $8.25/mo | No | 9.9 /mo | 1 languages | |
| 24 | Elucida | 4.8 | No | |||||
| 25 | ClassGuard | 4.7 | No | $10/mo | No |
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Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.