Best AI Content Detectors in 2026
Updated
In short: AI Detectors.io is ranked #1 of 25 as of 4 October 2026, ahead of ContentDetector.org and GPTZero. The best-ranked option with a free plan is ContentDetector.org. The lowest first paid tier on this page is It's AI at $0.42/mo.
If you need to check writing for possible AI involvement, detector options can differ in scale and access. Compare word limits and batch scanning with API access to gauge the kinds of checking each tool supports. Detection languages and paraphrase detection add further distinctions, and a browser extension may affect how you reach a service. Check free-plan availability and paid-from pricing as well. Originality.ai and GPTZero begin the ranking, followed by AI Detectors.io and Pangram. Winston AI, It's AI, Copyleaks AI Detector and TrustOriginality.ai are also among the first entries. Consider the listed capabilities against the volume, language and access method relevant to your checks.
25 AI content detectors ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
#1 AI Detectors.io Top pick · 7.1 Free plan · $0.69/mo
#2 ContentDetector.org Runner-up · 7.1 Free plan · Free
#3 GPTZero Also great · 7.0 Free plan · $8.33/mo
- Free plan apiextensionmacOSWebWindows
- Free plan
- Yes
- Paid from
- 8.33 /mo
- Word limit
- 25,000 words
- Paraphrase detection
- Yes
- API access
- Yes
RecognisedDocumentedFree planPlatforms$0.69/mofirst paid tier About AI Detectors.ioVisit site - Free plan extensioniOSmacOSWebWindows
- Free plan
- Yes
- API access
- Yes
RecognisedDocumentedFree planPlatforms - Free planFree trial apiextensionWeb
- Free plan
- Yes
- Detection languages
- 5 languages
- Paraphrase detection
- Yes
- API access
- Yes
RecognisedDocumentedFree planPlatforms$8.33/mofirst paid tier About GPTZeroVisit site - Free plan apiextensionWeb
- Free plan
- Yes
- Paid from
- 7 /mo
- Word limit
- 150,000 words
- Paraphrase detection
- Yes
- API access
- Yes
RecognisedDocumentedFree planPlatforms$0.42/mofirst paid tier About It's AIVisit site - Free planFree trial apiextensionWeb
- Free plan
- No
- Paid from
- 10 /mo
- Detection languages
- 16 languages
- Paraphrase detection
- Yes
- API access
- Yes
RecognisedDocumentedFree planPlatforms$0.42/mofirst paid tier About Winston AIVisit site - Free plan apiextensionWeb
- Free plan
- Yes
- Paid from
- 12.95 /mo
- Detection languages
- 30 languages
- Word limit
- 10,000 words
- Paraphrase detection
- Yes
- API access
- Yes
RecognisedDocumentedFree planPlatforms$12.95/mofirst paid tier About Originality.aiVisit site - Free planFree trial apiextensionWeb
- Free plan
- Yes
- Paid from
- 20 /mo
- Detection languages
- 24 languages
- Word limit
- 300,000 words
- Paraphrase detection
- Yes
- API access
- Yes
RecognisedDocumentedFree planPlatforms$1.67/mofirst paid tier About PangramVisit site - Free planFree trial apiWeb
- Free plan
- No
- Detection languages
- 23 languages
- Word limit
- 3,500 words
- Paraphrase detection
- Yes
- API access
- Yes
RecognisedDocumentedFree planPlatforms$15/mofirst paid tier About ProofademicVisit site - Free plan Web
- Free plan
- Yes
- API access
- Yes
RecognisedDocumentedFree planPlatforms€4.99/mofirst paid tier About TrustOriginality.aiVisit site - Free plan Web
- Free plan
- Yes
- Detection languages
- 5 languages
- API access
- Yes
RecognisedDocumentedFree planPlatforms - Free plan Web
- Free plan
- Yes
- Paid from
- 7 /mo
- API access
- Yes
RecognisedDocumentedFree planPlatforms$7/mofirst paid tier About Detecting-AI.comVisit site - Free plan Web
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - apiextensionWeb
- Free plan
- No
- Paid from
- 9.9 /mo
- Detection languages
- 1 languages
- Paraphrase detection
- Yes
- API access
- Yes
RecognisedDocumentedFree planPlatforms$8.25/mofirst paid tier About TheChecker.AIVisit site - Web
- Detection languages
- 30 languages
- Word limit
- 300,000 words
- Paraphrase detection
- Yes
- API access
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
- Paid from
- 8 /mo
- API access
- Yes
RecognisedDocumentedFree planPlatforms$8/mofirst paid tier About Isgen AI DetectorVisit site - Web
- Paid from
- 10 /mo
- API access
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
- Paraphrase detection
- Yes
- API access
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- No
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- No
- Paraphrase detection
- Yes
- API access
- Yes
RecognisedDocumentedFree planPlatforms -
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
- Paid from
- 6.99 /mo
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
- API access
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
- Paraphrase detection
- No
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- No
- Paid from
- 10.99 /mo
- Word limit
- 2,500 words
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- No
RecognisedDocumentedFree planPlatforms
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 content detector is ranked first on Everything Xiaomi?
AI Detectors.io is ranked #1 of 25 with a score of 7.1. ContentDetector.org is second and GPTZero third.
How many of these have a free plan?
12 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, It's AI has the lowest first paid tier we found: $0.42/mo.
How is this list ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on. Paid placements never change a rank.