AI Detector
Use TwainGPT's advanced AI detector and AI checker to analyze text and identify content generated by ChatGPT, GPT-5, Gemini, Claude, and other AI writing tools. Get a clear AI detection score in seconds.
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Free AI content detector
Check if text was written by AI with a free AI checker.
TwainGPT's AI detector is built to check whether text looks AI-generated. Paste a draft from ChatGPT, GPT-5, Gemini, Claude, or another writing tool and get a clear AI content score in seconds.
Use it as an AI checker before you submit an essay, publish an article, send a report, or review AI-assisted writing. The result gives you a fast read on whether the text may be flagged as AI-written.
Probability of AI
This text is very likely AI-generated
AI checker overview
What Is an AI Detector?
An AI detector, also called an AI checker or AI content detector, analyzes text to estimate how likely it was generated by AI. It searches for patterns common in AI-generated writing and determines whether the writer may have used a tool like ChatGPT, Gemini, or another AI writing platform.
AI content detection is used by students, educators, editors, SEO professionals, publishers, and businesses to review writing, protect originality, and understand whether a draft may be flagged as AI-generated.
Common AI writing signals
Common patterns found in AI-generated text
Simple detection workflow
How to Check AI Text for Free
TwainGPT keeps AI detection simple. Paste your text, choose your scan, review the AI score, then decide whether to edit, humanize, submit, or publish.
Paste your text
Add an essay, article, outline, email, report, or draft from ChatGPT, Gemini, Claude, or another LLM.
Choose scan settings
Enable Advanced Scan if you want sentence-level insights and a deeper AI detection report.
Run the AI checker
Click Scan for AI and let TwainGPT's AI detector analyze the writing pattern for AI-generated signals.
Review the score
Check the AI probability, human score, and overall AI checker result before making a decision.
Edit, humanize, or publish
If the draft is flagged as AI-generated, edit the text or use TwainGPT's AI humanizer before submitting.
AI model coverage
AI Detector for ChatGPT, GPT-5, Gemini, Claude, and More
TwainGPT's AI detector works across a wide range of AI language models, including ChatGPT, Gemini, Claude, DeepSeek, Llama, Grok, Perplexity, Microsoft Copilot, and other AI writing tools.
Detection features
The AI Detector That Stays Ahead of AI
Our AI Detector is continuously updated to account for emerging patterns in AI-generated text as AI evolves. It identifies typical AI tells and flags patterns you may not realize indicate AI. Our AI scanner offers clear results, fast analysis, and strong privacy protections to help keep your writing clean.
Trained on modern LLMs
Stay ahead of AI writing patterns from ChatGPT, Gemini, Claude, DeepSeek, and more.
Transparent results
Get clear AI and human scores so the detector result is easy to understand before you edit.
Multilingual support
Use the AI detector across English, Spanish, French, German, Portuguese, and more.
Instant detection
Paste your text and get fast AI checker results without slowing down your workflow.
Long-form review
Scan coursework, research drafts, blog posts, product pages, proposals, and longer writing.
Insights and next steps
Review the AI checker result, then decide whether to revise, rewrite, or humanize the draft.
How AI detection works
How Do AI Detectors Work?
AI detection uses natural language processing and machine learning to compare writing patterns. The AI checker turns text into measurable signals, compares them against human and AI-generated writing, then returns an AI probability score.
Input
Text is pasted into the AI checker to begin a detection scan.
Tokenize
The AI detector separates text into analyzable parts.
Analyze
The detector checks perplexity, burstiness, structure, and more.
Classify
The AI checker classifies the text based on its detected signals.
Who needs an AI checker?
Who Should Use an AI Detector?
Students
Check essays, coursework, reflections, discussion posts, and research drafts before submitting them.
Teachers and educators
Use the AI detector to review essays, assignments, and classroom writing for possible AI use.
SEO writers
Scan SEO content, blog posts, and landing pages for AI-generated patterns before publishing.
Editors and publishers
Review contributor drafts, guest posts, and submissions for possible AI-generated sections.
Marketers
Check campaign copy, product descriptions, emails, and social posts for generic AI patterns.
Business teams
Review reports, proposals, support replies, internal docs, and sales emails before sending them.
AI Detector FAQs
Answers to common questions about AI detectors, AI checkers, ChatGPT detection, false positives, plagiarism, and what to do when text gets flagged.