18.1
AI Detector Pro is a web tool for identifying signs of AI writing in documents and revising text.
Free planAndroidWebAPI
Best AI Detection Software in 2026
When you need to check text for possible AI generation, compare what each tool covers and how it fits your review workflow. Language coverage and word limits matter if you handle particular languages or varying amounts of text; API access, a browser extension, and report export offer other ways to work with results. Free plans, paid-from pricing, and included team seats can help you weigh access and cost. The…
27.8
Grammarly is a writing assistant from Grammarly, founded in 2009 and now part of Superhuman.
Free planAndroidiOS
37.6
Originality.ai offers tools for checking AI-generated text, plagiarism, facts, readability, grammar, spelling, and content quality.
Free planWebAPIExtension
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GPTZero
GPTZero identifies likely AI-generated writing and highlights potential AI use at document, sentence, and word level.
Free planWebAPIExtension7.5From $8.33 a month - 5
Trinka
Trinka is an AI grammar correction and language enhancement assistant designed for academic and technical writing.
Free planWebAPIExtensionmacOS7.5From $300 a year - 6
Winston AI
Winston AI detects AI-generated text and images and includes plagiarism checking and other content-integrity tools.
Free planWebAPIExtensionSelf-hosted7.5From $189 a month - 7
Sapling
Sapling combines writing assistance with developer tools for adding language model-powered functionality to applications.
Free planWebAPIExtensionSelf-hosted7.4From $144 a year - 8
ScribeLens
ScribeLens analyzes writing for AI-like patterns and provides sentence classifications, an overall interpretation, and an exportable report.
Free planWebAPIExtension7.4From $9 a month - 9
ZeroTrue
ZeroTrue checks text, images, audio, video, and code for signs that content may be AI-generated, through a web checker and API.
Free planAndroidiOSWebAPI7.4Free plan - 10
Heynotai
Heynotai checks whether text, images, audio, video, essays, headshots, voice notes or deepfakes are likely AI-generated.
Free planWebAPIExtensionSelf-hosted7.3From $8 a month - 11
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-hostedWindows7.2Free plan - 12
Copyleaks AI Detector
Copyleaks AI Detector identifies AI-written text, including text blended with human writing.
WebAPIExtensionSelf-hosted7.2 - 13
Polygraf AI Detector
Polygraf AI Detector identifies whether content was created or manipulated by AI.
Free planWebAPIExtension7.2From $9.95 a month - 14
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 planiOSWeb7.0From €118.80 a year - 15
TraceGPT
TraceGPT checks writing for signs of AI generation, scoring each sentence from 0 to 100 and highlighting sentences it flags.
WebAPIExtension7.0$5.99 one-time - 16
Walter Writes AI
AndroidiOSWebAPI7.0From $96 a year - 17
Detecto
Detecto is a web tool that estimates the likelihood that text, images, video, or audio were generated by AI.
Free planWeb6.9From $6.99 a month - 186.9From £399 a year
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Pangram
Pangram checks text and images for AI-generated content and also offers plagiarism detection.
Free planWebAPIExtension6.8From $20 a month - 20
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 planWebAPI6.6From $19 a month - 21
SlopProx
SlopProx is a browsing tool that detects and hides AI-generated text, images, and YouTube videos.
Free planExtensionLinuxmacOSWindows6.6From £49 a year - 22
UncovAI AI Detector Extension
UncovAI AI Detector Extension is a freemium browser extension for checking text, images, and links directly on web pages.
Free planWebExtension6.5From €9.99 a month - 23
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.
WebAPIExtension6.5From $60 a year - 24
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.
WebAPI6.4€4.99 one-time - 25
ClassGuard
ClassGuard is a browser-based service that reviews whether student writing matches each student’s established style.
Web6.3From $10 a month