ZeroGPTBenchmark-minded detection
Designed for long-form essays, research papers, resumes, and editorial drafts with clear probability bands instead of vague pass or fail labels.
AI Detector for Essays & Research Papers
Check human-written, AI-generated, and mixed text from ChatGPT, GPT-5, GPT-4o, Gemini 2.5, Claude, DeepSeek, Llama, Grok, Copilot, and more.
AI essay checkerHuman / AI / MixedSentence evidenceResearch paper reviewPlagiarism signals
0 / 10,000 freePro: 50k/check
0 of 2 free scans used today
Why choose this AI detector?
More than surface-level AI detection
Get a reliable AI checker for essays, research papers, resumes, and web content with explainable results, fewer false positives, and SEO-ready answer coverage.
Detection intelligence
Scan AI writing signals without losing academic context
The workflow combines model likelihood, sentence rhythm, repeated phrasing, file-upload review, and careful probability labels so teachers and students can evaluate AI writing responsibly.
AI writing signals in seconds
Identify likely AI-generated, human-written, and mixed passages from ChatGPT, GPT-5, GPT-4o, Gemini 2.5, Claude, DeepSeek, Llama, Grok, Copilot, Qwen, and newer model families.
Updated for new model behavior
The detection workflow is structured around retraining, fresh examples, and evolving sentence patterns so new AI systems can be evaluated responsibly.
See why text may be flagged
Sentence evidence, token-level likelihood, repeated phrasing, and rhythm notes help writers understand what needs review before rewriting.
Detection plus originality checks
Pair AI detection with plagiarism review, paraphrase checks, readability scoring, grammar review, and fact-checking for a more complete integrity workflow.
Careful with human writing
Short, formulaic, translated, or highly edited writing can be difficult to classify, so results are presented as signals that support human judgment.
Ready to review your own paper?Run a free AI essay detector scan
Languages
Multilingual AI detection for global writing
Review essays, assignments, professional documents, and web copy across major languages while keeping model coverage, sentence evidence, and privacy expectations clear.
Global writing review
Keep language support visible, not hidden inside a settings menu
Students, teachers, publishers, and multilingual teams can see supported languages, model coverage, and report outputs before they run a scan.
Advanced AI scanDetect model-like writing patterns across supported languages.
Plagiarism checkPair multilingual AI signals with originality review.
Writing feedbackShow sentence evidence before writers revise or submit.
Report exportShare clean reports for essays, papers, and web copy.
EnglishSpanishFrenchGermanPortugueseItalianDutchChineseJapaneseKoreanArabicHindiIndonesianVietnamesePolishTurkish
Paste multilingual text into the detector above.Check multilingual AI writing now
How it works
How our AI detector separates human and AI writing
The detector combines language modeling, deep learning, and explainable review logic to identify generative content with practical precision.
Trained against large collections of human-written academic, professional, and web documents.
Reviews statistical patterns left by large language models, including phrasing, burstiness, token likelihood, and sentence structure.
Separates AI-generated passages from human input even when the document contains mixed authorship or AI-assisted revisions.
Need a quick model signal?Test ChatGPT, GPT-5, Gemini, or Claude text
Explainable reports
Whole-text and sentence-level AI detection results
Give writers and reviewers a readable answer: what was flagged, why it may look AI-generated, and which next step is appropriate.
68%AI likelihood
PDFDOCXPaste text
Whole-document AI score with human, AI-generated, and mixed-text interpretation.
Sentence-by-sentence visualization showing which passages most influenced the result.
PDF and DOCX upload flow that extracts text first, then runs the same text-based AI detector.
Paraphrase, plagiarism, readability, grammar, and fact-check signals for deeper review.
Want a sentence-level answer for your draft?Get sentence-level AI detection results
Use cases
AI detection for students, teachers, editors, and teams
Different reviewers need different evidence. This homepage covers educational, editorial, recruiting, publishing, SEO, and enterprise AI checker intent.
Check essays before submission
Review AI writing risk, citation integrity, and rewrite suggestions before turning in assignments or research papers.
Support academic integrity
Use AI detection as one discussion signal alongside drafts, writing history, oral review, citations, and classroom context.
Protect content authenticity
Screen articles, blog posts, newsletters, and website copy for generic AI patterns before publication.
Review resumes and cover letters
Paste application text or connect a resume detection API to high-volume screening workflows.
Reduce low-quality AI spam
Identify repetitive, low-insight, machine-generated submissions across reviews, comments, and contributed articles.
Scale reviews with API and LMS
Use API, LMS, and batch workflows when teams need high-volume checks, policy reporting, or custom retention controls.
Choose your workflow, then start with the same scanner.Scan an essay, research paper, resume, or web article
Professional review workflow
Designed for careful decisions, not automatic accusations
AI detection works best when reviewers can compare the score with sentence evidence, document context, policy rules, and the writer's process.
Review AI writing with evidence, context, and policy
Use the AI score as a review signal, then compare sentence evidence with the document purpose, citation quality, draft history, and your institution's academic integrity rules.
Sentence evidenceDocument contextPolicy notes
AI Detection FAQs
Common AI detector questions people ask before they trust a score
Comprehensive answers for AI checker accuracy, model coverage, PDF and DOCX files, resume detection, API use, LMS workflows, false positives, privacy, and responsible AI use.
AccuracyModel coverageMixed textPDF and DOCXAPI and LMSPrivacy
How does AI detection work?
An AI detector uses machine-learning systems related to the architectures behind generative AI. It does not generate words. It estimates whether each word, token, sentence, and full document is more likely to be AI-generated or human-written, then visualizes the result.
What models can this AI detector review?
It is designed for text from ChatGPT, GPT-5, GPT-4o, Gemini 2.5, Claude 4.5, DeepSeek-V3, Qwen3, Llama, Grok, Copilot, and other current or emerging AI writing systems.
Can it detect mixed human and AI text?
Yes. Mixed text is one of the main use cases. The detector looks for sections where human-created text may have been amended, expanded, paraphrased, or rewritten by AI.
Does the AI detector support PDF and DOCX files?
A production version can support PDF AI detection and DOCX AI detection by extracting text from the file first, then running the same text-based analysis used by the editor.
Can I check resumes or cover letters?
Yes. You can paste resume or cover letter text into the editor. For high-volume recruiting, an AI resume detector API can connect to an applicant tracking system.
Is there an API, LMS, or browser workflow?
The page is structured for API, LMS, browser-selection, and enterprise workflows. Teams can use the same detection logic inside classroom systems, editorial tools, or screening pipelines.
Is there a free AI detector?
The free checker can support quick scans with practical text limits. Paid plans can unlock longer character limits, saved reports, batch checks, file uploads, and team controls.
Why do AI detectors have minimum and maximum text length requirements?
Very short text provides too little signal and can create false positives. Very long text needs token limits, processing controls, and fair-use boundaries, so large documents may be split or processed through an API.
How accurate is AI detection?
Accuracy varies by text length, subject, language, editing level, and model family. Long-form documents usually provide stronger signals, while short or generic text can be harder to classify.
What is the most accurate AI detector?
The best AI detector should combine model coverage, low false positives, explainable sentence evidence, transparent limits, privacy controls, and regular evaluation against fresh AI outputs.
Will normal grammar tools or writing assistants be flagged as AI content?
Basic spelling, grammar, and clarity edits should not automatically mean a document is AI-generated. Heavy rewriting, generic phrasing, and uniform sentence patterns may increase the score.
What data protection should an AI detector provide?
A trustworthy AI checker should explain retention, encryption, access controls, training use, deletion options, and enterprise data-processing terms before teams upload sensitive writing.
Can teachers detect whether a student used AI for schoolwork?
AI detection can support review, but it should not be treated as automatic proof. Teachers should combine detection with draft history, citations, student discussion, and assignment context.
Does AI detection also check plagiarism or paraphrasing?
AI detection and plagiarism detection answer different questions. A full integrity workflow should also review source overlap, paraphrased passages, citation quality, readability, and factual claims.
What is AI spam?
AI spam is low-quality, repetitive, generic, or mass-produced machine-generated content. It often appears in reviews, social posts, comments, articles, and other user-generated content surfaces.
Can tools falsely claim that text passes an AI detector?
Yes. Some tools claim that text will pass a detector without actually checking it. Treat those claims cautiously and verify the final document with a transparent AI checker.
Can AI-generated content be detected by search engines?
Search quality systems focus on usefulness, originality, expertise, and trust. AI detection can help editors find generic drafts, but strong content still needs accurate information and human value.
Is using AI considered cheating?
That depends on the policy. Schools, publishers, and workplaces should define acceptable AI assistance, citation rules, disclosure requirements, and review steps before judging a document.
After reading the answers, run a live check.Check your paper with the AI detector