Best AI Detection Software in 2026
Updated
In short: GPTZero is ranked #1 of 30 as of 4 October 2026, ahead of Sapling and Polygraf AI Detector. The best-ranked option with a free plan is Sapling. The lowest first paid tier on this page is ScribeLens at $0.04/mo.
AI detection software helps you assess text that may have been generated by AI. Start by comparing language coverage and word limit against the material you review, then consider whether API access, a browser extension, or report export fits how you handle results. GPTZero, Sapling, and Polygraf AI Detector are among the options shown. Free-plan availability, included team seats, and the paid starting price offer additional points of comparison. Think about the languages and volume of text involved, as well as whether you need to review results individually or within a team. The listed access methods and limits can help you identify which options suit your review process.
30 AI detection software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
AI Detection Software, ranked on how quickly a newcomer can get going. 18 of the 25 on this page can be tried for free.
- 1 GPTZeroPaid from $8.33/mo
- Free to practise on: yes
- Free trial: yes
- Well documented: yes
- Runs where you work: not on record
- 2 SaplingPaid from $1/mo
- Free to practise on: yes
- Free trial: yes
- Well documented: yes
- Runs where you work: not on record
- 3 Polygraf AI DetectorPaid from $9.95/mo
- Free to practise on: yes
- Free trial: yes
- Well documented: yes
- Runs where you work: not on record
- 4 PangramPaid from $1.67/mo
- Free to practise on: yes
- Free trial: yes
- Well documented: yes
- Runs where you work: not on record
- 5 UncovAI AI Detector ExtensionPaid from €9.99/mo
- Free to practise on: yes
- Free trial: yes
- Well documented: yes
- Runs where you work: not on record
- 6 Winston AIPaid from $0.42/mo
- Free to practise on: yes
- Free trial: yes
- Well documented: yes
- Runs where you work: not on record
- 7 GrammarlyPaid from $12/mo
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 8 TraceGPT
- Free to practise on: not on record
- Free trial: yes
- Well documented: yes
- Runs where you work: not on record
- 9 TrinkaFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 10 ZeroTrueFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 11 Copyleaks AI DetectorPaid from $1.17/mo
- Free to practise on: not on record
- Free trial: yes
- Well documented: yes
- Runs where you work: not on record
- 12 HeynotaiPaid from $8/mo
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 13 IA CheckerPaid from €9.90/mo
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 14 ScribeLensPaid from $0.04/mo
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 15 Originality.aiPaid from $12.95/mo
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 16 Undetectable AIPaid from $0.42/mo
- Free to practise on: not on record
- Free trial: yes
- Well documented: yes
- Runs where you work: not on record
- 17 AI Detector ProFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 18 EyeSiftFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 19 Smodin AI Detector
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 20 Is It AI?
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 21 SlopProx
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 22 Walter Writes AI
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: yes
- 23 Airno
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 24 ClassGuard
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 25 Compilatio AI Detector
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
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 The Geeks Club?
GPTZero is ranked #1 of 30 with a score of 7.7. Sapling is second and Polygraf AI Detector 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 on how quickly a newcomer can get going: documentation depth, a free tier or trial, and the platforms it runs on. Paid placements never change a rank.