18.1
AI Detector Pro is a web tool for identifying signs of AI writing in documents and revising text.
Free planAndroidWebAPI
Best AI Content Detectors in 2026
When checking writing for possible AI generation or paraphrasing, the right detector depends on your workflow and the material you need to review. Compared on API access, batch scanning, browser extensions, detection languages, paraphrase detection, and word limits, these options also show free-plan availability and paid-from pricing. AI Detectors.io, ContentDetector.org, and GPTZero are among the tools to compare.…
28.0
TrustOriginality.ai analyzes text, images, audio, and video for signs of AI-generated or manipulated content.
Free planAndroidiOSWeb
37.6
Originality.ai offers tools for checking AI-generated text, plagiarism, facts, readability, grammar, spelling, and content quality.
Free planWebAPIExtension
- 4
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
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 - 6
Copyleaks AI Detector
Copyleaks AI Detector identifies AI-written text, including text blended with human writing.
WebAPIExtensionSelf-hosted7.2 - 7
AI Detectors.io
AI Detectors.io analyzes text associated with major language models and returns an overall AI probability, confidence scores, and sentence-level results.
Free planWebAPIExtensionmacOS6.9From $100 a year - 8
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 - 96.9From £399 a year
- 10
Detecting-AI.com
Detecting-AI.com analyzes writing for signals associated with AI and displays a document score with likely AI-related passages highlighted in the text.
Free planWebAPI6.8From $84 a year - 11
6.8From $5 a month - 12
Isgen AI Detector
Isgen AI Detector is a web and API service for assessing whether content may have been generated by AI.
Free planWebAPI6.8From $8 a month - 13
Pangram
Pangram checks text and images for AI-generated content and also offers plagiarism detection.
Free planWebAPIExtension6.8From $20 a month - 14
Proofademic
Proofademic analyzes submitted writing for possible AI-generated content and plagiarism.
Free planWebAPI6.8From $15 a month - 15
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 - 16
ContentDetector.org
ContentDetector.org is a free tool that estimates whether text was written by AI and displays a percentage for AI-written versus human-written content.
Free planiOSWebExtensionmacOS6.6Free plan - 17
It's AI
It's AI estimates whether text may have been produced by a language model, with checks for content associated with ChatGPT, Gemini, Claude, Grok and other models.
Free planWebAPIExtension6.6Free plan - 18
Mask AI Detector
Mask AI Detector is a web-based tool that checks text for AI-generated content using six detection engines.
Free planWeb6.5From $10.99 a month - 19
ClassGuard
ClassGuard is a browser-based service that reviews whether student writing matches each student’s established style.
Web6.3From $10 a month - 20
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 planWeb6.3Free plan - 21
Smodin AI Detector
Smodin AI Detector examines writing for patterns associated with AI-generated text, helping users judge its apparent authenticity.
WebExtension6.1From $10 a month - 22
TheChecker.AI
TheChecker.AI analyzes writing for signs of AI generation from Claude, GPT models, Gemini, and more than 40 models, including ChatGPT and Llama.
WebAPIExtension6.1From $99 a year - 23
AI-Content Detector ML
AI-Content Detector ML is a free browser-based tool for estimating whether text was generated by ChatGPT, Claude, Gemini, and other AI models.
Free planWebExtension6.0Free plan - 24
Content Checker by AI Aware
Content Checker by AI Aware is a paid web service that assesses submitted writing as human, AI-generated or hybrid.
Web6.0 - 25
Elucida
Elucida is a web platform for colleges, universities, high schools, and other educational institutions that want to identify AI-created essays and test answers.
Web5.0