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AI Detector

Detect AI writing, copied text, and AI images instantly with the free AI detector

Supported Languages:  

English

French

Spanish

German

All others

AutoEnglishAfrikaansAlbanianAmharicArabicArmenianAzerbaijaniBasqueBelarusianBengaliBosnianBulgarianCatalanCebuanoChichewaChinese SimplifiedChinese TraditionalCorsicanCroatianCzechDanishDutchEsperantoEstonianFilipinoFinnishFrenchFrisianGalicianGeorgianGermanGreekGujaratiHaitian CreoleHausaHawaiianHebrewHindiHmongHungarianIcelandicIgboIndonesianIrishItalianJapaneseJavaneseKannadaKazakhKhmerKoreanKurdishKyrgyzLaoLatinLatvianLithuanianLuxembourgishMacedonianMalagasyMalayMalayalamMalteseMaoriMarathiMongolianMyanmarNepaliNorwegianPashtoPersianPolishPortugueseRomanianRussianSamoanScots GaelicSerbianSesothoShonaSindhiSinhalaSlovakSlovenianSomaliSpanishSundaneseSwahiliSwedishTajikTamilTeluguThaiTurkishUkrainianUrduUzbekVietnameseWelshXhosaYiddishYorubaZulu

Try sample

Claude
GPT-5.2
Gemini 3
Human

(.doc, .docx, .pdf)

Bulk Detection
0/5000 characters

1 Credit Cost

Detection Mode

Basic

Standard accuracy • Single-model analysis

Advance

Higher accuracy • Multi-model analysis

Optional Add-ons

Sentence Analysis

Detailed Sentence level detection

Plagiarism Checker

Scan copied text online

AI Image Detector

Check if an image is AI-generated

Trusted by 10k+ Universities • 50k+ Businesses • 100+ Countries

Detect AI Writing

AI Detector detects AI written content with paragraph-level detection, sentence-level detection, and word-level analysis. It evaluates AI vocabulary, commonly used AI words, and overused words.

The AI Detector applies document-level detection to scan mixed documents, both AI- and human-generated. CudekAI AI Checker verifies AI-generated patterns with accurate results.

SAMPLES:AI TEXTHUMAN0 / 5,000 charactersDetect AI TextINPUT65%OF TEXT IS LIKELY AI-GENERATEDAI SCORE65%HUMAN35%⚡ AI DETECTEDOUTPUT
Plagiarism Checker

Detect Copied Text

AI Checker detects copied content, accidental plagiarism, and duplicate content. CudekAI plagiarism detector scans essays, articles, research papers, and web content to verify content originality.

CudekAI combines AI detection and plagiarism scanning for a complete originality analysis.

Detect AI Images

CudekAI Image Detector scans AI-generated visuals. It verifies AI image authenticity across multiple supported formats. The AI Image Checker reviews visual content to score the AI probability.

The image detector classifies results using an AI rate and a visual AI score to indicate low, medium, or high AI possibilities with clear and structured image analysis for accurate verification.

AI Image Detector

Discover What an AI Detector Can Do

Multi-Modal Inputs

Upload a URL, DOCX, PDF, TXT, or RTF file, or paste text directly. AI detector scans up to 15,000 characters in a single submission.

Multi-Modal Outputs

Download detailed detection reports in PDF or DOCX. Share via copy-results, shareable links, or direct email.

AI Humanizer

Turn AI-generated texts into human-like writing. Refined content reduces detection while maintaining clarity.

AI Plagiarism Checker

Detects copied content and identifies accidental plagiarism through advanced detection algorithms.

AI Grammar Checker

Identify and fix grammar, punctuation, and sentence structuring. Improve readability in one click.

AI Proofreader

Review tone, structure, and readability score to detect overlooked mistakes before submission.

Multi-Language Support

Detect AI writing across English, Spanish, French, German, Japanese, Hungarian, and more.

AI Translator

Translate content across 104 languages while keeping original intent and context.

AI Essay Checker

Check essays for AI patterns, plagiarism, and structuring. Assists in fair grading.

AI Summarizer

Convert long documents into concise summaries. Focused summarization keeps info direct.

AI Paraphraser

Rewrite sentences to improve clarity and avoid repetition without losing key intent.

AI Rewriter

Reword sentences and paragraphs using synonyms to enhance readability and flow.

Follow the Three Steps to Detect AI Content

01

Input Content

Paste text directly to start the checking process. Enter a URL or upload DOCX, PDF, TXT, or RTF files. CudekAI AI detector scans up to 15000 characters.

02

Start Detection

Run the AI checker to perform word-level, sentence-level, paragraph-level, and document-level analysis. The AI detector automatically scans for AI-generated and plagiarized content.

03

Get Output

The CudekAI detector will scan the text in seconds. Download the detailed report in PDF and DOCX format or create a shareable link.

All-in-One Multi-Model AI Detector

Detect AI content generated by the top AI models

OpenAI icon

ChatGPT

Detects Content Generated By GPT-5, GPT-4, GPT-3, GPT-4.1, And GPT-4.1-Mini. Accurate AI Probability Scoring Ensures Reliable Analysis.

Gemini

CudeKAI AI Checker Detects Text By Gemini 3, Gemini 2.5 Pro, Gemini 2.5 Flash, And Gemini 2.5 Flash-Lite With Structured Analysis.

Claude

Identify Robotic Text From Claude Sonnet 4 Using Sentence-Level And Document-Level Analysis.

Meta

Llama

The AI Detector Identifies Linguistic Patterns Produced By Llama.

DeepSeek

Detects Text Generated By DeepSeek Models With Adaptive AI Fingerprint Analysis

Grok

Grok

Analyze AI-Written Content Created By Grok With Cross-Model Comparison Logic..

Get Detailed AI Detection Results. Every time

Accuracy, Detailed Analysis, Instant Results

CudekAI uses a highly accuracy model for reliable AI detection. Independent benchmarking and large-scale testing verify its detection accuracy. The AI detector model minimizes false positives and misclassifications, while benchmarks confirm consistent performance across multiple AI models.

Verify text across Schools, Universities, and Enterprises

Academic Trust

CudekAI is trusted by teachers, students, and researchers across academic institutions, colleges, and universities. The school system uses an AI detector to check AI in essays, papers, and blog content for accurate verification.

Professional Edge

Copywriters, marketers, recruiters, publishers, and authors rely on its precise AI detection score. Every submission is analyzed to ensure high-stakes content meets originality standards.

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UPGRADE ANYTIME

// Initialize CudekAI API
POST /v1/detect/bulk
{
"inputText": "Sample Text",
}

Bulk AI detection with API access

Performs bulk AI detection with API integration by inputting content and getting API access to the AI detector for automated checks. The API supports AI detection, plagiarism checking, paraphrasing, and translation.

See Why 100,000+ users Choose CudekAI

100,000+
Global Users
Instant
Bulk Analysis
Ready to automate?

Get API access today.

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Frequently Asked Questions (FAQs)

What is an AI detector?

An AI detector is a tool by CudekAI that identifies AI and human writing by analyzing the linguistic and structural patterns. AI checker determines AI probability.

Why do you need an AI content checker?

You need an AI content checker to identify content created by artificial intelligence. CudekAI analyzes text, images, and other forms of media to determine whether it was generated by human effort or through complex machine learning (ML) algorithms.

How does the CudekAI AI detector work?

CudekAI AI detector works by analyzing linguistic patterns, structure, and probability signals at paragraph-level, sentence-level, and word-level to determine AI likelihood.

What is the best AI detector?

The best AI detector provides high detection accuracy with low false positives. CudekAI's content checker delivers reliability through benchmarking and large-scale testing.

Does the free AI checker store any data?

Submitted content is not stored permanently. The AI content detector system processes text securely and protects user privacy.

What languages do the CudekAI AI detectors support?

The AI detector supports multiple languages for AI and plagiarism detection. The AI text detector analyzes multilingual content across 100+ languages using model-specific signals.

How is the CudekAI AI detector different from others?

This AI detector offers multi-model detection, detailed analysis, and API access. CudekAI focuses on reducing misclassification and improving detection accuracy.

Does the AI checker only check text from ChatGPT?

No, the AI text detector does not only check text from ChatGPT. The Multi-Model AI Detector scans content from ChatGPT, GPT-5, GPT-4, GPT-3, Gemini, Claude, Llama, DeepSeek, Grok, and other AI models.

Who benefits from using a free AI checker?

Everyone can benefit from using an AI content detector. Teachers, students, copywriters, researchers, and publishers can verify AI detection.

What are the limitations of the ChatGPT detector?

AI detectors analyze linguistic and structural patterns for AI probability. Detection accuracy may vary for mixed documents or paraphrased AI content. False positives and misclassification can occur in certain cases.