What it is
Overview
An AI detection tool that analyzes text for machine-generated content across GPT, Claude, and Gemini models. Built on proprietary detection algorithms rather than wrapping existing models. The 26.3 million monthly visits skew toward educators checking student submissions, content creators verifying originality, and students testing their own work before submission.
At a glance
Usability & Quality overview
Best for
- quick, casual checks on English-language text
- low-stakes screening
Watch out for
- false positives (flagging human text as AI)
- easy evasion (paraphrasing bypassing detection)
- low accuracy (35-65% vs claimed 98%)
Real product, not a wrapperIndependent product
ZeroGPT functions as a basic interface for AI text detection without proprietary algorithms or specialized training data. It lacks the advanced features or workflow integration that would set it apart from simpler detection tools.
Strong evidenceQuality score
ZeroGPT is a convenient, free AI detector but is unreliable due to high false positives and easy evasion, making it unsuitable for high-stakes decisions.
Plans
Pricing
How free is free?
Free with limits
Free AI detection but accuracy issues; pushes premium humanizer
What you get for free
- AI content detection for ChatGPT, GPT-5, Claude and other models
- Sentence-level highlighting of detected AI content
- Basic plagiarism checking functionality
Behind the paywall
- AI Humanizer tool for rewriting contentPremium
- Higher word count limits for checkingPremium
- Advanced paraphraser and summarizer toolsPremium
Community feedback
Aggregated reviews
Ratings and quoted comments below are aggregated from third-party sources and reflect those users' views, not SearchTools.ai's.
What reviewers talk about
themes inside the Sentiment pillar — not score ingredients
15Output Quality73 mentions
“(Everything I'm about to say is a lie) It is very accurate and can tell that my writing is not ai and it can detect which ones are. I love it because it shows word by word what is ai and what is not and those words that are highlighted have a 100 percent accuracy of being right.”
“Absolute trash! It thinks everything is written by AI. ”
“El mismo archivo en formato de word (.doc) y en formato pdf daban uno un 76% en IA y el otro un 13.4% en IA. SIENDO EL MISMO ARCHIVO EXACTAMENTE. Esto ya debería ser prueba suficiente de lo malo que es este detector de IA.”
“This is literally the A.I. detector that flags the Declaration of Independence as A.I.-generated. Use that how you will. ”
29Value & Pricingthin data · 7 mentions
“PRPratiksha R.Frontend DeveloperMid-Market (51-1000 emp.)4/28/2026More Options "Affordable, Easy-to-Use AI Content Detection That Performs Well" 5/5 Basically, we need to analyse whether users have used ChatGPT or any other tool to write their answers, because we are creating a”
“Scammers trying to capitalize on GPTZero's reputation. ”
“The worst possible tool of this kind. 100% inaccurate. Impossible to get a decent score unless you write like 4-year old kid. The only purpose is to force users get premium so they can use AI Humanizer by the same brand, which is also one of the worst of it's kind. ”
“Es una página web que oferta un servicio supuestamente gratuito de verificación de texto escriyo con IA, pero que luego tiene funcionalidades dentro de su aplicación con otras empresas, que en ningún momento dice que sean colaboradores. Si quieres tener la posibilidad de que te ”
46Reliability10 mentions
“ABAmit Singh B.Sr. WFM Analyst Mid-Market (51-1000 emp.)9/8/2024More Options "A tool which help you to figure out what is real" 4/5 It provides results quickly and is easy to use. It helped alot to figure out AI generated Articles as well as assisments. It quickely Scan everyth”
“Отвратительный сайт, который приходится использовать в работе из-за того, что его создателям удается обмануть некоторых заказчиков. Результат может кардинально измениться из-за одного символа, в том числе пробела. При этом сервис не обнаруживает ИИ-тексты, но отмечает человечески”
“This is the worst tool ever. The numbers are completely made up; just do a few minutes' test with any text. Not only is it a huge waste of time for teachers and evaluators, but it's also a risk for students and workers. I don't even know why it's so popular. On top of that, they'”
“gptzero and zerogpt are both unreliable”
83Ease of Use10 mentions
“PSPriya S.Digital Marketing ManagerSmall-Business (50 or fewer emp.)12/16/2025More Options "Essential Tool for Effortless AI Content Detection" 5/5 ZeroGPT is an extremely helpful tool for detecting AI-generated content. I rely on it daily to review blog posts for my project. I”
“Confusing website. I didn't have a clue what the heck it was saying”
“DTDo T.Internal Contro & AuditSmall-Business (50 or fewer emp.)10/30/2024More Options "Improvement in another language, like Vietnamese" 4/5 Zero GPT is a simple interface and quick results. I find its very easy to use, i just had to input the data and ZeroGPT will provided me ”
“NGNamrata G.Team LeadInformation Technology and ServicesMid-Market (51-1000 emp.)11/5/2024More Options "ZeroGPT for the win!" 3.5/5 ZeroGPT stands out for its accuracy and simplicity, while identifying AI generated content. It has a simple and straightforward interface with no ”
Capabilities
Key features
Content Detector
Analyzes text to estimate whether it was written by a human or AI
Plagiarism Checker
Scans text against sources to detect copied passages and flag originality issues
Grammar Checker
Detects and corrects grammar, spelling, and punctuation errors in your writing
Paraphraser
Rewrites text in different words while keeping the original meaning intact
The honest take
What users love & flag
Distinct themes surfaced across 52 reviews from 2 sources — each grounded in real review text, ranked by how often it comes up.
Questions
Frequently asked
What is ZeroGPT?
ZeroGPT is an AI detection platform that identifies content generated by ChatGPT, GPT-5, Claude, Gemini, and other AI models. It provides sentence-level highlighting to show exactly which parts of text are AI-generated, along with percentage scores indicating the amount of AI content detected. The platform also includes additional writing tools like plagiarism checking, paraphrasing, summarizing, and grammar correction.
Is ZeroGPT free to use?
Yes, ZeroGPT offers a free tier that includes basic AI detection capabilities for up to 15,000 characters per check. Premium plans are available that unlock additional character limits and advanced features, though specific pricing details for paid tiers aren't specified.
Which AI models can ZeroGPT detect?
ZeroGPT can detect content generated by ChatGPT, GPT-3, GPT-4, GPT-5, Claude, Gemini, Grok, Perplexity AI, and LLaMa models. The platform uses DeepAnalyse Technology to analyze text across these various AI systems, providing comprehensive coverage of the most popular AI writing tools.
What makes ZeroGPT different from other AI detectors?
ZeroGPT stands out by providing sentence-level highlighting that shows exactly which parts of text are AI-generated, rather than just giving an overall score. It also supports over 100 languages and covers the latest AI models like GPT-5, while combining AI detection with a full suite of writing tools in one platform.
What additional writing tools does ZeroGPT offer?
Beyond AI detection, ZeroGPT provides a comprehensive writing toolkit including an AI humanizer, plagiarism checker, paraphraser, summarizer, grammar checker, translator, word counter, and citation generator. This makes it an all-in-one platform for content verification and enhancement rather than just AI detection.
Can ZeroGPT generate reports for AI detection results?
Yes, ZeroGPT automatically generates PDF reports for each AI detection analysis as proof of the results. This feature is particularly useful for educators checking student submissions or content managers who need documentation of their verification process.
Does ZeroGPT support file uploads and batch processing?
Yes, users can upload files directly to ZeroGPT in addition to inputting text manually. The platform also supports batch file uploads through the dashboard, making it efficient for processing multiple documents at once.
What integration options does ZeroGPT provide?
ZeroGPT offers integration with WhatsApp and Telegram through dedicated bots for convenient access. The platform also provides API access for organizations that want to integrate AI detection capabilities into their own systems or workflows.
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