Best AI Content Detection Software in 2026
Updated
In short: Trinka is ranked #1 of 45 as of 7 October 2026, ahead of Ahrefs and AI or Not. The best-ranked option with a free plan is Ahrefs. The lowest first paid tier on this page is ScribeLens at $0.04/mo.
When you need to assess whether text may be AI-generated, the right comparison can depend on where scans run and how results are handled. These entries are ranked, starting with AI or Not, Originality.ai, and GPTZero. Compare supported languages, file uploads, and batch scanning, then consider whether report exports suit the way you review or share results. API access and a browser extension are additional factors for fitting checks into other tools or browser-based work. Free-plan availability and paid starting prices round out the fields to compare.
45 AI content detection software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
22 of the 25 here have a free tier you can use, 0 have open-source code on record, and 0 have full bars: free, open, on most of your devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 1 | TrinkaWeb · Windows · Mac · Self-hosted · API · Extension | Three bars | — | 3 of 6 | Free | 6.6 | |
| 2 | AhrefsWeb · API | Two bars | — | 1 of 6 | $29/mo | 6.4 | |
| 3 | AI or NotWeb · iPhone · API | Two bars | — | 2 of 6 | $5/mo | 6.4 | |
| 4 | GPTZeroWeb · API · Extension | Two bars | — | 1 of 6 | $8.33/mo | 6.4 | |
| 5 | Hive AI-Generated Content DetectionWeb · Self-hosted · API · Extension | Two bars | — | 1 of 6 | $6/mo | 6.4 | |
| 6 | Polygraf AI DetectorWeb · API · Extension | Two bars | — | 1 of 6 | $9.95/mo | 6.4 | |
| 7 | Reality DefenderWeb · Self-hosted · API | Two bars | — | 1 of 6 | $33.25/mo | 6.4 | |
| 8 | Resemble DetectWeb · Self-hosted · API · Extension | Two bars | — | 1 of 6 | $280/mo | 6.4 | |
| 9 | ScribeLensWeb · API | Two bars | — | 1 of 6 | $0.04/mo | 6.4 | |
| 10 | Winston AIWeb · API · Extension | Two bars | — | 1 of 6 | $5/mo | 6.4 | |
| 11 | AI Detector ProWeb | Two bars | — | 1 of 6 | Free | 6.3 | |
| 12 | Detecting-AI.comWeb · API | Two bars | — | 1 of 6 | $0.58/mo | 6.3 | |
| 13 | IlluminartyWeb · API | Two bars | — | 1 of 6 | $10/mo | 6.3 | |
| 14 | Isgen AI DetectorWeb · API | Two bars | — | 1 of 6 | $8/mo | 6.3 | |
| 15 | Originality.aiWeb · API · Extension | Two bars | — | 1 of 6 | $12.95/mo | 6.3 | |
| 16 | PangramWeb · API · Extension | Two bars | — | 1 of 6 | $1.67/mo | 6.3 | |
| 17 | ProofademicWeb · API | Two bars | — | 1 of 6 | $15/mo | 6.3 | |
| 18 | Quetext AI DetectorWeb · API · Extension | Two bars | — | 1 of 6 | $7.99/mo | 6.3 | |
| 19 | TrustOriginality.aiWeb | Two bars | — | 1 of 6 | €4.99/mo | 6.3 | |
| 20 | ZeroGPTWeb · API | Two bars | — | 1 of 6 | Free | 6.3 | |
| 21 | Corrector.appWeb | One bar | — | 1 of 6 | Free | 6.1 | |
| 22 | EyeSiftWeb | One bar | — | 1 of 6 | Free | 6.1 | |
| 23 | TraceGPTWeb · API · Extension | One bar | — | — | 1 of 6 | — | 5.5 |
| 24 | Copyleaks AI DetectorWeb · API · Extension | One bar | — | — | 1 of 6 | $1.17/mo | 5.4 |
| 25 | HumbotWeb · API | One bar | — | — | 1 of 6 | $0.67/mo | 5.4 |
Compare all 25 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | Supported languages | File uploads |
|---|---|---|---|---|---|---|---|---|
| 1 | Trinka | 6.6 | Free plan | — | Yes | 20 /mo | — | — |
| 2 | Ahrefs | 6.4 | Free plan | $29/mo | Yes | 29 /mo | — | — |
| 3 | AI or Not | 6.4 | Free plan | $5/mo | Yes | 5 /mo | — | Yes |
| 4 | GPTZero | 6.4 | Free plan | $8.33/mo | Yes | — | — | — |
| 5 | Hive AI-Generated Content Detection | 6.4 | Free plan | $6/mo | No | — | — | Yes |
| 6 | Polygraf AI Detector | 6.4 | Free plan | $9.95/mo | Yes | — | 1 | Yes |
| 7 | Reality Defender | 6.4 | Free plan | $33.25/mo | Yes | — | — | Yes |
| 8 | Resemble Detect | 6.4 | Free plan | $280/mo | Yes | 350 /mo | 54 | Yes |
| 9 | ScribeLens | 6.4 | Free plan | $0.04/mo | Yes | 9 /mo | — | — |
| 10 | Winston AI | 6.4 | Free plan | $5/mo | No | 10 /mo | — | — |
| 11 | AI Detector Pro | 6.3 | Free plan | Free | Yes | — | — | — |
| 12 | Detecting-AI.com | 6.3 | Free plan | $0.58/mo | Yes | 7 /mo | — | — |
| 13 | Illuminarty | 6.3 | Free plan | $10/mo | Yes | 10 /mo | — | Yes |
| 14 | Isgen AI Detector | 6.3 | Free plan | $8/mo | Yes | 8 /mo | — | — |
| 15 | Originality.ai | 6.3 | Free plan | $12.95/mo | Yes | 12.95 /mo | — | — |
| 16 | Pangram | 6.3 | Free plan | $1.67/mo | Yes | 20 /mo | — | — |
| 17 | Proofademic | 6.3 | Free plan | $15/mo | No | — | — | — |
| 18 | Quetext AI Detector | 6.3 | Free plan | $7.99/mo | Yes | 7.99 /mo | — | — |
| 19 | TrustOriginality.ai | 6.3 | Free plan | €4.99/mo | Yes | — | — | — |
| 20 | ZeroGPT | 6.3 | Free plan | Free | Yes | — | — | Yes |
| 21 | Corrector.app | 6.1 | Free plan | Free | Yes | — | — | — |
| 22 | EyeSift | 6.1 | Free plan | Free | Yes | — | — | — |
| 23 | TraceGPT | 5.5 | No | — | Yes | — | — | — |
| 24 | Copyleaks AI Detector | 5.4 | No | $1.17/mo | — | — | — | — |
| 25 | Humbot | 5.4 | No | $0.67/mo | Yes | 7.99 /mo | — | — |
Is your app on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which AI content detection software is ranked first on Freedom251?
Trinka is ranked #1 of 45 with a score of 6.6. Ahrefs is second and AI or Not third.
How many of these have a free plan?
22 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, ScribeLens has the lowest first paid tier we found: $0.04/mo.
How is this list ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.