Best AI Detection Software in 2026
Updated
In short: Trinka is ranked #1 of 30 as of 4 October 2026, ahead of Grammarly and Sapling. The best-ranked option with a free plan is Grammarly. The lowest first paid tier on this page is ScribeLens at $0.04/mo.
If you need to assess whether text may have been generated by AI, compare these tools by language coverage and word limit, then check for API access, a browser extension, and report export. Free plans, starting paid prices, and included team seats can help clarify fit for your workflow. The entries are ranked, beginning with Originality.ai, Pangram, and Winston AI, with Heynotai and TraceGPT also among the first options. Check the listed limits and access features against the languages and volume of text you expect to review.
30 AI detection software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
15 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 | GrammarlyAndroid · iPhone | Two bars | — | 2 of 6 | $12/mo | 6.5 | |
| 3 | SaplingWeb · Windows · Self-hosted · API · Extension | Two bars | — | 2 of 6 | $1/mo | 6.5 | |
| 4 | ZeroTrueWeb · Android · iPhone · Self-hosted · API | Three bars | — | 3 of 6 | Free | 6.5 | |
| 5 | GPTZeroWeb · API · Extension | Two bars | — | 1 of 6 | $8.33/mo | 6.4 | |
| 6 | HeynotaiWeb · Self-hosted · API · Extension | Two bars | — | 1 of 6 | $8/mo | 6.4 | |
| 7 | IA CheckerWeb · iPhone | Two bars | — | 2 of 6 | €9.90/mo | 6.4 | |
| 8 | Originality.aiWeb · API · Extension | Two bars | — | 1 of 6 | $12.95/mo | 6.4 | |
| 9 | Polygraf AI DetectorWeb · API · Extension | Two bars | — | 1 of 6 | $9.95/mo | 6.4 | |
| 10 | ScribeLensWeb · API | Two bars | — | 1 of 6 | $0.04/mo | 6.4 | |
| 11 | Winston AIWeb · API · Extension | Two bars | — | 1 of 6 | $0.42/mo | 6.4 | |
| 12 | PangramWeb · API · Extension | Two bars | — | 1 of 6 | $1.67/mo | 6.3 | |
| 13 | UncovAI AI Detector ExtensionWeb · Extension | Two bars | — | 1 of 6 | €9.99/mo | 6.3 | |
| 14 | AI Detector ProWeb | One bar | — | 1 of 6 | Free | 6.2 | |
| 15 | EyeSiftWeb | One bar | — | 1 of 6 | Free | 6.1 | |
| 16 | TraceGPTWeb · API · Extension | One bar | — | — | 1 of 6 | — | 5.5 |
| 17 | Copyleaks AI DetectorWeb · API · Extension | One bar | — | — | 1 of 6 | $1.17/mo | 5.4 |
| 18 | Undetectable AIWeb · API · Extension | One bar | — | — | 1 of 6 | $0.42/mo | 5.4 |
| 19 | AirnoWeb | No signal | — | — | 1 of 6 | — | 5.1 |
| 20 | DetectoWeb | No signal | — | — | 1 of 6 | — | 5.1 |
| 21 | Is It AI?Web | No signal | — | — | 1 of 6 | — | 5.1 |
| 22 | SlopProxWindows | No signal | — | — | 1 of 6 | — | 5.1 |
| 23 | Smodin AI DetectorWeb | No signal | — | — | 1 of 6 | — | 5.1 |
| 24 | LearnawayWeb | No signal | — | — | 1 of 6 | — | 5.0 |
| 25 | TruthLensNo platforms listed | No signal | — | — | 0 of 6 | — | 5.0 |
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which AI detection software is ranked first on Freedom251?
Trinka is ranked #1 of 30 with a score of 6.6. Grammarly is second and Sapling third.
How many of these have a free plan?
15 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. Paid placements never change a rank.