AI Detector — WritiMate

Why use WritiMate's AI Detector

Built on agentic AI workflows, WritiMate goes beyond surface-level pattern matching. Every sentence is forensically analyzed using 30+ detection signals across vocabulary, structure, and behavioral patterns.

Sentence-Level Analysis

Every sentence is classified independently as AI-generated, AI-refined, or human-written. No blanket scores that miss the nuance.

Built-in AI Rewriter

Detected AI content? One click rewrites only the flagged sentences while preserving your authentic human voice. Then auto-verifies the result.

18 Languages Supported

Detects AI patterns in English, Hindi, Spanish, French, German, Chinese, Japanese, Arabic, Korean, and 9 more languages with language-specific markers.

Confidentiality Guaranteed

Your text is processed in real-time and never stored. We don't log, share, or train on your submissions.

No Sign-Up Required

Start detecting AI content instantly. No account, no paywall, no credit card. Just paste and detect.

Powered by AI Agents

Not a simple classifier. WritiMate uses agentic AI workflows that apply 30+ forensic signals, weighted analysis, and conservative labeling to minimize false positives.

Detects content from every major AI model

WritiMate's detection framework identifies text generated by the latest models with high accuracy. The forensic analysis catches patterns that persist across model families, versions, and fine-tunes.

ChatGPT (GPT-3.5)

GPT-4

GPT-4o

GPT-4.5

Claude 3 / 3.5 / 4

Gemini

Gemini 2.5

Llama 3 / 4

Mistral

DeepSeek

Command-R

Qwen

Copilot

Jasper

WriteSonic

Copy.ai

No AI detector can guarantee 100% accuracy. As language models evolve, detection tools must continuously adapt. WritiMate's agentic architecture makes it easy to update detection signals without rebuilding the system.

WritiMate AI Detector is perfect for

🎓

Students

Verify your own work before submission

Check that AI-assisted drafts have been sufficiently rewritten in your own voice
Identify which sections your professor's detector would flag
Build confidence that your submission reflects genuine understanding
Use the built-in rewriter to humanize flagged passages

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Educators

Maintain academic integrity at scale

Screen student submissions with sentence-level precision
Distinguish between AI-generated and AI-refined work
Get evidence-based analysis rather than blanket pass/fail scores
Support 18 languages for international student bodies

✍️

Bloggers & Content Teams

Protect your SEO and brand voice

Audit freelancer and agency submissions before publishing
Prevent search algorithm penalties for AI-generated content
Ensure your content reads as authentic and original to readers
Rewrite flagged sections while preserving your editorial direction

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Enterprises

Quality control for content operations

Verify authenticity of reports, proposals, and client deliverables
Screen job applications and cover letters at scale
Maintain compliance with internal content authenticity policies
Multilingual support for global operations

AI Detector vs. Plagiarism Checker

Both verify content authenticity, but they solve fundamentally different problems.

AI Detector

Finds AI-generated text

Analyzes the internal characteristics of writing: sentence structure, word choice, predictability, burstiness, and behavioral patterns. It asks "does this text behave like AI output?" without comparing it to any database.

How it works

Measures 30+ forensic signals per sentence: vocabulary fingerprints, structural uniformity, low burstiness, missing human texture, formulaic hedging, and semantic emptiness.

Plagiarism Checker

Finds copied text

Compares your text against a database of web pages, academic journals, news articles, and published work. It asks "does this text match something already published?" without analyzing writing style.

How it works

Searches billions of indexed documents for overlapping phrases, paraphrased passages, and uncited sources. Reports similarity percentage with links to matching sources.

Your questions, answered

Which AI models can WritiMate detect?

WritiMate detects content generated by all major language models including ChatGPT (GPT-3.5, GPT-4, GPT-4o, GPT-4.5), Claude (3, 3.5, 4), Google Gemini, Meta Llama 3/4, Mistral, DeepSeek, Qwen, and AI writing tools like Jasper, Copy.ai, and WriteSonic. The detection framework targets universal AI patterns that persist across model families.

How accurate is WritiMate's AI detection?

WritiMate uses a conservative "2+ strong signals" rule before labeling any sentence as AI-generated, which minimizes false positives. Accuracy varies by content type and language, but the sentence-level analysis with 30+ detection signals provides significantly more nuance than simple pass/fail detectors. No AI detector can guarantee 100% accuracy, and WritiMate is transparent about this limitation.

How do I interpret the AI score?

The percentage shows how much of your text (by character count) falls into each category. AI-generated (yellow) means the sentence was almost certainly written by an LLM. Human-written & AI-refined (blue) means a human idea was polished or expanded by AI. Human-written (gray) means the sentence was authored by a person. The sentence-level breakdown in the results panel shows exactly which sentences were flagged and why.

What does the Rewrite feature do?

After detection, if AI content is found, the Rewrite button surgically rewrites only the sentences flagged as AI or mixed, while preserving your human-written sentences exactly as they are. It then automatically re-runs detection on the rewritten text so you can verify the score dropped. You can undo the rewrite at any time to restore your original text.

Does WritiMate support multiple languages?

Yes. WritiMate supports 18 languages including English, Hindi, Spanish, French, German, Portuguese, Chinese, Japanese, Arabic, Korean, Russian, Italian, Dutch, Turkish, Indonesian, Thai, and Vietnamese. Each language has its own set of AI markers. For example, Hindi detection catches the absence of natural code-mixing, while Spanish detection flags overly formal register that avoids regional vocabulary.

Is my text stored or shared?

No. Your text is processed in real-time through the detection pipeline and is not stored, logged, or used for training. WritiMate does not retain any submitted content after the analysis is complete.

Can AI-generated text pass detection after rewriting?

The built-in rewriter is designed to humanize AI text by replacing AI vocabulary, adding natural variation, and injecting human texture. After rewriting, the auto-verification shows you the new score. In most cases, the AI score drops significantly. However, heavily formulaic or entirely AI-generated text may still retain some detectable patterns even after rewriting.