Top 50 AI Content Detectors
Ranked by ToolRank — ToolPotion's proprietary traction engine
#1 right nowGoogle SynthID Detector72Strong- measured
- 89
- avg. ToolRank
- 40.6/100
- combined audience
- 5.4M
ToolRank
ToolRank is ToolPotion’s proprietary ranking engine.
It continuously evaluates hundreds of signals across the open web — real traffic and popularity, audience and community strength, authority and longevity, adoption and engagement — processing millions of data points to place every tool where it has earned to be.
Every AI type is measured by its own tailored model: what proves traction for a SaaS app is not what proves it for an open-source framework or a creator channel. Missing a platform never counts against a tool — ToolRank judges the evidence that exists.
No paid placement. No self-reported numbers.
Teachers and editors checking work with AI content detectors should begin with GPTZero AI Detector, which highlights AI text sentence by sentence. Copyleaks suits schools and businesses needing text, image and audio checks, and Originality.ai adds plagiarism and fact checks for content teams. — Editor's verdict
Quick picks
1 of 4
- # 1Top PickGoogle SynthID DetectorAI AppGoogle SynthID Detector is a tool designed to watermark and identify AI-generated content, enhancing transparency and trust in generative AI. It embeds imperceptible digital watermarks in images, audio, text, and video, which can be detected to verify content authenticity.72ToolRankStrong
- # 2Runner Up
GPTZero AI DetectorAI AppGPTZero is a free AI content checker that detects text generated by models like ChatGPT, GPT-5, and Gemini. It offers sentence-by-sentence analysis and an overall AI score, helping users verify writing authenticity and improve content quality. It aims to preserve human writing.72ToolRankStrong
- # 3Third Place
SciSpace AI for ResearchAI AppSciSpace is an AI research assistant designed for academics, enabling systematic literature reviews on over 280M papers and assisting in writing papers with cited sources. Trusted by millions of students, PhDs, and researchers worldwide.62ToolRankStrong
- 4
Copyleaks AI Content DetectionAI AppCopyleaks offers an AI-powered platform for detecting AI-generated content, ensuring text authenticity, and protecting intellectual property. It provides multi-modal detection across text, video, audio, and image, supporting over 30 languages and integrating seamlessly with existing workflows for businesses and educational institutions.59ToolRankSolid - 5
Undetectable AI DetectorAI AppUndetectable AI offers a free online tool to check text for AI-generated content from models like ChatGPT, GPT-5, and Gemini. It provides instant results, helping users ensure their writing appears human-like and avoid AI detection flags in academic and professional settings.56ToolRankSolid - 6
Winston AI DetectorAI AppWinston AI is a trusted AI content detector and plagiarism checker. It accurately identifies content generated by ChatGPT, Claude, Google Gemini, and other AI models. Features include sentence-level precision, shareable reports, and a plagiarism checker, helping users maintain content originality and integrity.54ToolRankSolid - 7
Originality.ai AI DetectorAI AppOriginality.ai offers an accurate AI detector to identify text generated by ChatGPT, GPT-5, Gemini, Claude, and other popular AI writing tools. It provides detailed insights, sentence-level highlighting, and integrates with Chrome and Google Docs for seamless content integrity checks.54ToolRankSolid - 8
Smodin AI Writing AssistantAI AppSmodin is an AI-powered writing platform offering content creation, rewriting, humanization, and plagiarism checking. It helps users generate original text, improve existing content, and ensure academic integrity. Trusted by over one million users, Smodin streamlines the writing process for students, researchers, and content creators.53ToolRankSolid
- 9iThenticateAI AppiThenticate is a tool for researchers and publishers to screen documents for originality, ensuring integrity and reputation. It offers comprehensive similarity and AI writing detection, ideal for high-stakes documents.53ToolRankSolid
- 10
Compilatio Plagiarism & AI CheckerAI AppCompilatio offers advanced plagiarism and AI content detection tools for educators, students, and writers. It provides intuitive analysis reports and supports integration with major LMS platforms to ensure academic integrity and authenticity of written work.52ToolRankSolid - 11
Reality DefenderAI AppReality Defender provides robust deepfake detection solutions for enterprises, platforms, and institutions, enabling them to identify AI-generated and manipulated media in real time, thus preventing potential threats before they escalate.50ToolRankSolid - 12
Quetext Plagiarism Checker & AI DetectorAI AppQuetext offers a comprehensive suite for detecting plagiarism and AI-generated content. Its DeepSearch™ technology analyzes billions of sources for accuracy, while features like a grammar checker, AI summarizer, and paraphrasing tool enhance writing integrity and efficiency for students, teachers, and professionals.49ToolRankSolid - 13
AI DetectorAI AppAI Detector identifies AI-generated content with 99.9% accuracy. It analyzes text for AI patterns, checks for plagiarism, and offers sentence-level insights. Trusted by educators and professionals, it ensures content authenticity and originality.48ToolRankSolid
- 14
DetectGPTAI AppDetectGPT is a free AI checker and plagiarism detector designed to analyze text for AI-generated content and web overlap. Users can paste up to 5,000 words or a public URL to receive an AI percentage score and identify matching phrases from public web pages. It supports various LLMs and offers a separate AI humanizer tool.45ToolRankSolid - 15
ImageWhispererAI AppAI image detector for journalists, researchers and law enforcement that runs 44 independent forensic checks on a photo or link and returns one plain-language verdict plus a full investigation workspace with reverse-image search and fact-check sources.45ToolRankSolid - 16
CodequiryAI AppCodequiry is a source code plagiarism checker and AI-written code detector. It scans programming assignments against peer submissions, GitHub, Stack Overflow, and the web, supporting 65+ programming languages. Trusted by universities and engineering teams, it helps maintain academic integrity.44ToolRankSolid - 17
Pangram AI DetectionPangram AI Detection is a Chrome extension for accurate AI-written text identification. Highlight text, right-click, and select 'Check for AI Content' to receive instant analysis. It works across social feeds, web pages, and Google Docs, offering a breakdown of human versus AI contributions.44ToolRankSolid - 18
AI CheckerAI AppAI Checker is a tool designed to detect AI-generated content in both text and images. It provides detailed reports with detection signals, passage highlights, and clear explanations of the results. Users can scan articles, essays, and photos to identify potential AI involvement, helping them review content before sharing and understand the limitations of AI detection.43ToolRankSolid - 19
NoPlagioAI AppNoPlagio offers a robust AI detector and plagiarism checker for students and educators. It helps identify AI-generated content and potential plagiarism in written work, ensuring originality and academic integrity. The tool provides detailed reports with highlighted similarities and source links for easy review and correction.42ToolRankSolid - 20
ZeroGPTAI AppZeroGPT is a comprehensive AI detection tool that analyzes text, images, and videos for AI-generated content. It provides confidence scores and detailed analysis, offering three free scans without requiring signup.41ToolRankSolid - 21Sensity AI Deepfake DetectionAI AppSensity AI provides a forensic-grade deepfake detection solution for videos, images, and audio. It offers multilayer analysis, cloud and on-premise deployment, and detailed forensic reports to ensure accurate and reliable detection of synthetic media.38ToolRankEmerging
- 22
Illuminarty AI DetectionAI AppIlluminarty provides tools to detect AI-generated images and texts, helping users identify whether content was created by AI or human artists. It offers various functionalities, including localized detection and an API for automated detection.37ToolRankEmerging - 23
Plagramme - Plagiarism Checker and AI DetectorAI AppPlagramme is an online tool that checks for plagiarism and AI-generated content. It supports over 100 languages for plagiarism detection and 50+ for AI detection, offering free document scores and detailed reports to ensure originality.37ToolRankEmerging - 24
Clever AI DetectorAI AppClever AI Detector is a free online tool that checks text for AI-generated content. It provides a probability score and sentence-level signals to help users identify AI-written text. No sign-up is required, and it supports up to 10,000 words per check.37ToolRankEmerging - 25
TruthScan - AI Content DetectionAI AppTruthScan offers enterprise-level AI detection solutions to identify AI-generated text, images, voice, and deepfakes. Trusted by universities, corporations, and government agencies, it helps protect against AI fraud by verifying user-submitted media in real time.36ToolRankEmerging - 26Detector.ioAI AppAI content checker that scans your text across five AI detectors at once — GPTZero, Winston AI, ZeroGPT, AI Detector Pro and its own model — showing each provider's real score side by side, then lets you humanize flagged lines and re-check.35ToolRankEmerging
- 27
Plagium Plagiarism CheckerAI AppPlagium offers advanced plagiarism detection and AI-generated content verification tools, ensuring academic and professional authenticity. Protect your work's originality with comprehensive analysis and immediate notifications of content similarities.35ToolRankEmerging - 28
AI DetectorAI AppAidetector.com offers a free AI text detection tool that identifies AI-generated content from models like ChatGPT and GPT-4. It uses multiple detectors to minimize false positives, ensuring accurate results for educators, writers, and businesses.34ToolRankEmerging - 29
Proofig AIAI AppProofig AI is a tool designed to ensure image integrity in scientific research. It detects image manipulation, duplication, and plagiarism, helping researchers and publishers maintain high standards of research credibility and prevent retractions.34ToolRankEmerging - 30
IsgenAI AppIsgen is a multilingual AI content detector that checks text for AI-generated writing from models like GPT-5, Claude and Gemini, with word- and sentence-level insights, plus a plagiarism and grammar checker.34ToolRankEmerging - 31
Image DetectorAI AppImagedetector.com offers a free AI image detection tool to identify AI-generated images and deepfakes. It provides quick and easy results without requiring sign-up, ensuring privacy and accuracy in detecting manipulated visuals.34ToolRankEmerging - 32
Leap AI Content DetectorAI AppLeap AI's Content Detector is a free tool that checks whether text was written by ChatGPT, Claude, Gemini or other models, giving sentence-level scoring and model signals instead of a single verdict.34ToolRankEmerging - 33
Content CredentialsAI AppContent Credentials Verify offers advanced tools for detecting media authenticity, ensuring transparency and reliability in digital content. It helps identify manipulated media and provides provenance information, making it easier to evaluate digital content critically.33ToolRankEmerging - 34
AIDetectors.io AI Detection ToolAI AppAIDetectors.io offers a free AI detection tool that identifies AI-generated text from models like ChatGPT, GPT-4, Claude, and Gemini. It provides sentence-level analysis and confidence scoring without requiring signup.33ToolRankEmerging - 35
Hive AI DetectorHive AI Detector is a free Chrome extension that checks if text, images, audio, or videos are AI-generated. It scans content directly from your browser, identifying AI-generated media from popular models and predicting the generative engine used for images and videos. No login is required.33ToolRankEmerging - 36
Proofademic AI DetectorAI AppProofademic offers an accurate AI detector for education, publishing, and enterprise. It provides document scores and sentence-level signals, enabling users to review AI-generated text effectively. The tool supports multilingual detection and batch scanning, making it suitable for various workflows.33ToolRankEmerging - 37
Decopy AIAI AppDecopy AI is an advanced AI writing tool designed to enhance academic writing. It offers AI detection, text humanization, and summarization features to improve clarity and efficiency. The platform helps users write, learn, and work smarter by transforming ideas into perfectly expressed content while preserving originality and privacy.33ToolRankEmerging - 38
WasItAI Image DetectorAI AppWasItAI is an AI image detector that identifies AI-generated images. Upload a photo to determine if it was created by AI or a human. It supports deepfake detection and offers API access for bulk analysis.33ToolRankEmerging - 39
AI Detector - BitMindAI Detector - BitMind is a Chrome extension that identifies AI-generated media across various platforms like X/Twitter, Instagram, and Facebook. It enhances cybersecurity by detecting fake news, AI images, and disinformation, offering real-time detection and a confidence score for informed browsing.32ToolRankEmerging - 40
AI Detector & AI CheckerAI AppInstantly check text for AI-generated content with this advanced AI detector. It analyzes writing patterns to identify AI-written text with high precision, highlighting AI-generated sentences and providing detailed analysis. Supports multiple AI models and over 50 languages, ensuring reliable results for students, educators, and businesses.32ToolRankEmerging - 41
AIDetectPlusAI AppAIDetectPlus is an AI content detector and humanizer designed for students, educators, and marketers. It identifies AI-generated content in essays, blogs, and papers, offering tools to humanize and ensure originality. Supports multiple languages and provides plagiarism checks.31ToolRankEmerging - 42
AI Detector ProAI AppAI Detector Pro is a tool that helps identify AI-generated content, including from GPT4 and Gemini, and offers humanization suggestions to make it sound more natural. It supports multiple languages and provides both automatic and manual editing tools.31ToolRankEmerging - 43
Plagiarisma AI DetectorAI AppPlagiarisma AI Content Detector is a free online tool designed to identify AI-generated text from models like ChatGPT and GPT-5. It helps businesses, educators, and creators ensure content authenticity without registration.31ToolRankEmerging
- 44
DeepfakeDetection.ioAI AppDeepfakeDetection.io offers a free AI-powered tool for detecting deepfakes in images, videos, and voices. It provides fast and accurate authenticity verification, helping users identify manipulated media and protect against misinformation.31ToolRankEmerging - 45
CatchGPTCatchGPT is a Chrome extension designed to detect AI-generated text and images. It helps users differentiate between human-created and AI-generated content, aiming to preserve the value of human knowledge for future progress. The tool offers a one-click solution for content analysis.31ToolRankEmerging - 46
AI ScannerAI AppFree AI content detector that checks text for AI-generated writing from ChatGPT, Claude, Gemini and other models, returning an AI score and a sentence-by-sentence breakdown, with no account required and no text stored.30ToolRankEmerging - 47
EyeSift AI DetectorAI AppEyeSift provides free AI detection tools for text, images, video, and audio. It helps identify AI-generated content using statistical analysis and linguistic fingerprinting, offering a browser-first, no-signup workflow.30ToolRankEmerging
- 48
MyDetector.aiAI AppMyDetector.ai offers a free AI content checker for text generated by ChatGPT, Gemini, and Claude. It uses advanced algorithms to detect AI patterns, providing high-precision analysis. The tool supports multiple file formats and offers real-time results, helping users ensure content authenticity and improve readability.30ToolRankEmerging - 49
AI Image DetectorAI AppAI Image Detector is a free tool that analyzes photos in seconds to estimate whether they were AI-generated. It detects output from generators like Midjourney, DALL-E, and Stable Diffusion for journalists, educators, and everyday users.30ToolRankEmerging - 50
GenaiosGenaios is a Chrome extension designed for AI content detection and fact-checking. It automatically identifies AI-generated text and scans information for accuracy, helping users safeguard trusted information online. Supporting English, German, and Spanish, it aims to empower users with reliable online content verification.30ToolRankEmerging
Quick picks
1 of 4
Editor's round-up
This board ranks detectors that check whether text, images or media came from AI. GPTZero AI Detector leads with a ToolRank of 72. It highlights suspect sentences, gives an overall score and adds a hallucination detector. Copyleaks AI Content Detection is second and checks text, video, audio and images in more than 30 languages. Undetectable AI Detector is third. It is free with no signup, though the same app also offers a humanizer that makes AI text sound human.
Further down, a few options fit specific jobs. Originality.ai AI Detector bundles plagiarism, readability and fact checks for content teams. Winston AI Detector gives sentence-level results and shareable reports. iThenticate screens high-stakes research papers, theses and dissertations. Compilatio Plagiarism & AI Checker plugs into major LMS platforms and has a free tier for students.
AI images and video need different tools. Reality Defender catches deepfakes and cloned voices in real time. ImageWhisperer runs 44 forensic checks on a photo and returns one plain verdict. Sensity AI Deepfake Detection produces forensic reports for legal and government work.
Pick by what you check most. Teachers should look at GPTZero or Compilatio, editors at Originality.ai, and security teams at Reality Defender.
How to choose AI content detectors
Test on your own samples
Several detectors here advertise accuracy near 99%. Run a few texts you know are human and a few you know are AI through GPTZero, Winston AI and ZeroGPT before trusting any score.
Look for sentence-level results
An overall percentage is hard to act on. GPTZero, Winston AI and Quetext highlight individual sentences. They show exactly which passages to discuss or rewrite.
Match your workflow
Teachers can run checks inside their LMS with Compilatio. Writers can check drafts in Google Docs with Originality.ai or the Pangram AI Detection Chrome extension.
Cover images and audio too
Text detectors cannot catch deepfakes. For photos, video and voice, look at Reality Defender, ImageWhisperer or Sensity AI, which were built for synthetic media.