Best AI Detection Software in 2026
Updated
In short: GPTZero is ranked #1 of 30 as of 3 October 2026, ahead of TraceGPT and Trinka. The best-ranked option with a free plan is Trinka. The lowest first paid tier on this page is ScribeLens at $0.04/mo.
When you need to assess whether writing may be AI-generated, compare the tools’ language coverage and word limits with the way you plan to review text. API access, browser extensions, and report export can shape how detection fits into your workflow; free plans, paid-from pricing, and included team seats add cost and collaboration context. The ranking begins with Originality.ai, Pangram, and Winston AI, then continues with TraceGPT and Heynotai. Check the listed capabilities against your review volume, languages, and preferred access method before settling on a fit.
30 AI detection software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
| # | Platform | Score | Why | From | Free plan | Paid from | Word limit | |
|---|---|---|---|---|---|---|---|---|
| 1 | GPTZero | 7.4 | RecognisedAPIDocumented | $8.33/mo | Yes | — | — | View |
| 2 | TraceGPT | 7.4 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 3 |  Trinka | 7.4 | RecognisedAPIDocumented | — | Yes | 20 /mo | — | View |
| 4 |  Heynotai | 7.3 | RecognisedAPIDocumented | $8/mo | Yes | 8 /mo | — | View |
| 5 | Sapling | 7.3 | RecognisedAPIDocumented | $1/mo | Yes | — | — | View |
| 6 | Undetectable AI | 7.3 | RecognisedAPIDocumented | $0.42/mo | Yes | 9.99 /mo | — | View |
| 7 | Winston AI | 7.3 | RecognisedAPIDocumented | $0.42/mo | No | 10 /mo | — | View |
| 8 | Originality.ai | 7.2 | RecognisedAPIDocumented | $12.95/mo | Yes | 12.95 /mo | 10,000 words | View |
| 9 | Pangram | 7.2 | RecognisedAPIDocumented | $1.67/mo | Yes | 20 /mo | 300,000 words | View |
| 10 |  Grammarly | 5.9 | RecognisedAPIDocumented | $12/mo | Yes | — | — | View |
| 11 |  IA Checker | 5.9 | RecognisedAPIDocumented | €9.90/mo | Yes | — | 300,000 words | View |
| 12 |  UncovAI AI Detector Extension | 5.8 | RecognisedAPIDocumented | €9.99/mo | Yes | — | — | View |
| 13 | AI Detector Pro | 5.6 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 14 |  ScribeLens | 5.6 | RecognisedAPIDocumented | $0.04/mo | Yes | 9 /mo | 300,000 words | View |
| 15 | EyeSift | 5.5 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 16 |  Polygraf AI Detector | 5.5 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 17 | Airno | 5.3 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 18 | Copyleaks AI Detector | 5.3 | RecognisedAPIDocumented | — | — | — | 300,000 words | View |
| 19 | Detecto | 5.3 | RecognisedAPIDocumented | — | Yes | 6.99 /mo | — | View |
| 20 | Is It AI? | 5.3 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 21 |  SlopProx | 5.3 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 22 |  TruthLens | 5.3 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 23 |  ZeroTrue | 5.3 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 24 |  AI Detect | 5.2 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 25 |  Learnaway | 5.2 | RecognisedAPIDocumented | — | Yes | — | — | View |
Is your platform 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 Inferse?
GPTZero is ranked #1 of 30 with a score of 7.4. TraceGPT is second and Trinka third.
How many of these have a free plan?
13 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 on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it. Paid placements never change a rank.