4
GPTZero
GPTZero identifies likely AI-generated writing and highlights potential AI use at document, sentence, and word level.
Free planWebAPIExtension
7.5From $8.33 a month
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5
Trinka
Trinka is an AI grammar correction and language enhancement assistant designed for academic and technical writing.
Free planWebAPIExtensionmacOS
7.5From $300 a year
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6
Sapling
Sapling combines writing assistance with developer tools for adding language model-powered functionality to applications.
Free planWebAPIExtensionSelf-hosted
7.4From $144 a year
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7
ScribeLens
ScribeLens analyzes writing for AI-like patterns and provides sentence classifications, an overall interpretation, and an exportable report.
Free planWebAPIExtension
7.4From $9 a month
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8
ZeroTrue
ZeroTrue checks text, images, audio, video, and code for signs that content may be AI-generated, through a web checker and API.
Free planAndroidiOSWebAPI
7.4Free plan
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9
Heynotai
Heynotai checks whether text, images, audio, video, essays, headshots, voice notes or deepfakes are likely AI-generated.
Free planWebAPIExtensionSelf-hosted
7.3From $8 a month
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10
AI Detect
AI Detect is a free, open-source tool that scores writing sentence by sentence for signs associated with AI-generated text.
Free planOpen sourceLinuxmacOSSelf-hostedWindows
7.2Free plan
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11
Copyleaks AI Detector
Copyleaks AI Detector identifies AI-written text, including text blended with human writing.
WebAPIExtensionSelf-hosted
7.2
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12
Polygraf AI Detector
Polygraf AI Detector identifies whether content was created or manipulated by AI.
Free planWebAPIExtension
7.2From $9.95 a month
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13
IA Checker
IA Checker is an iOS and web workspace for checking AI-generated text and images, revising writing, and labelling AI content under the EU AI Act.
Free planiOSWeb
7.0From €118.80 a year
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14
TraceGPT
TraceGPT checks writing for signs of AI generation, scoring each sentence from 0 to 100 and highlighting sentences it flags.
WebAPIExtension
7.0$5.99 one-time
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15
Walter Writes AI
AndroidiOSWebAPI
7.0From $96 a year
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16
Detecto
Detecto is a web tool that estimates the likelihood that text, images, video, or audio were generated by AI.
Free planWeb
6.9From $6.99 a month
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17
Learnaway
Learnaway is a web-based writing-process detector for teachers.
Free planWeb
6.9From £399 a year
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18
Pangram
Pangram checks text and images for AI-generated content and also offers plagiarism detection.
Free planWebAPIExtension
6.8From $20 a month
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19
Airno
Airno analyzes text and images to estimate whether they may have been generated by AI, returning a confidence score and a breakdown by detector.
Free planWebAPI
6.6From $19 a month
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20
SlopProx
SlopProx is a browsing tool that detects and hides AI-generated text, images, and YouTube videos.
Free planExtensionLinuxmacOSWindows
6.6From £49 a year
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21
UncovAI AI Detector Extension
UncovAI AI Detector Extension is a freemium browser extension for checking text, images, and links directly on web pages.
Free planWebExtension
6.5From €9.99 a month
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22
Undetectable AI
Undetectable AI’s AI Detector checks whether text may be AI-generated and identifies ChatGPT, Gemini, Claude, and other models as detectable sources.
WebAPIExtension
6.5From $60 a year
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23
Compilatio AI Detector
Compilatio AI Detector estimates what share of a text may have been generated by AI and highlights relevant passages in an analysis report.
WebAPI
6.4€4.99 one-time
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24
ClassGuard
ClassGuard is a browser-based service that reviews whether student writing matches each student’s established style.
Web
6.3From $10 a month
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25
EyeSift
EyeSift is a web-based set of tools for checking text, images, video and audio for signals associated with AI generation, alongside writing and utility tools.
Free planWeb
6.3Free plan
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26
Is It AI?
Web
6.2From £9.99 a month
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27
Smodin AI Detector
Smodin AI Detector examines writing for patterns associated with AI-generated text, helping users judge its apparent authenticity.
WebExtension
6.1From $10 a month
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28
TruthLens
TruthLens is a free, open-source browser extension that flags possible AI-generated text, synthetic images, and cloned voices in real time.
Free planExtension
5.6Free plan
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29
Turnitin AI Writing Detection
Web
5.4
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