AI Detector

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AI Detector

Check your content for AI on our dashboard here.

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Detection Result

Your AI detection report will appear here.

AI-generated content is evolving quickly. These results should not be used to punish students or writers, but as part of a holistic assessment. See our FAQ to learn more.

Used by Students & Writers Around the World

Why Choose PassWithProof?

Why Choose PassWithProof's AI Detector & AI Checker?

Our AI detector and AI checker deliver results you can trust. Here's what makes PassWithProof different:

Industry-Leading Accuracy for AI Detection

PassWithProof's AI checker achieves 99.8% accuracy in detecting AI-generated text from the latest models including ChatGPT, Claude, Gemini, and other AI writing tools. Our proprietary models are trained on over 1 million real human articles - not synthetic AI content - giving us deep understanding of authentic human writing patterns.

This training on genuine human writing means our AI detector can distinguish between:

Completely AI-written text
Human writing with AI assistance (grammar checking, paraphrasing)
Original human writing that happens to match some AI patterns

Lightning-Fast AI Detection Results

Get your AI detection report in under 10 seconds. Our AI checker processes your text instantly and provides detailed results showing exactly which sections appear AI-generated. No waiting in queues, no slow processing - just immediate, actionable feedback.

100% Free AI Checker - No Hidden Limits

Unlike other AI detectors that advertise "free" but limit you to 250-500 characters, PassWithProof's AI checker is genuinely unlimited. Check as many essays, articles, or documents as you need. No character caps, no scan limits, no pressure to upgrade.

When we say free, we mean completely free.

Your Privacy Protected

Your content stays completely private. All text analyzed by our AI detector is processed securely and deleted immediately after analysis. We don't store your writing, we don't share it, and we don't use it to train our models.

No account required, no tracking, no data retention. Your intellectual property remains yours.

Detailed Highlighting Shows Exactly What's AI

Our AI checker doesn't just give you a percentage - it shows you precisely which sentences triggered the detection. Review highlighted sections to understand what patterns our detector identified, making it easy to address flagged content if needed.

This transparency helps educators have informed conversations with students rather than relying on a simple number.

Comprehensive AI Model Coverage

Our AI checker detects content from all major AI writing tools:

ChatGPT (ChatGPT 4o, ChatGPT 5 and 5.1)
Claude (all versions)
Google Gemini and Bard
Meta Llama models
Jasper, Copy.ai, and other AI writers

Whether your students used ChatGPT or a newer tool, our AI detector identifies the patterns.

Built for Academic Integrity

PassWithProof's AI detector is designed specifically for educational contexts. We understand that AI detection is part of a larger conversation about academic integrity, not a gotcha tool. Our checker helps:

Educators assess student work fairly
Students verify their writing before submission
Writers ensure their content reads authentically
Professionals maintain quality standards

We believe in using AI detection responsibly - as one signal in holistic assessment, not the final word.

How to use AI Detector

Catch AI Writing in Seconds with Our Free AI Detector

Spot ChatGPT and other AI-generated text instantly. No signup required - just paste your text and get results in under 10 seconds.

Step 1

Paste Your Text

Add your content: Copy and paste any text you want to check for AI writing.

Choose your language: Works with English, Spanish, French, and German text.

Minimum length: Make sure your text is at least 30 words long for accurate results.

Step 2

Get Instant Results

Click "Check for AI": Press the 'Check for AI' button at the bottom of the tool.

See your score: Get a clear percentage showing how much text is AI-generated.

View detailed breakdown: See exactly which sentences our AI detector flagged.

Step 3

Review & Fix

Check highlighted parts: Red highlights show text that looks AI-generated.

Rewrite if needed: Edit flagged sections to make them sound more human.

Test again: Run another check to see your improvements.

Is it magic?

How Our AI Checker Works: Proprietary Technology

Our AI checker is built on proprietary models trained exclusively on millions of real human writing. We understand authentic human writing patterns at a fundamental level - not just AI patterns to avoid.

Built on Real Human Writing, not Synthetic Data

Unlike other AI detectors that rely on third-party technology, our AI checker is built on proprietary models trained exclusively on over 1 million real human articles. This means we understand authentic human writing patterns at a fundamental level - not just AI patterns to avoid.

Most detection tools analyze what AI writing looks like. PassWithProof's AI detector understands what genuine human writing looks like. That difference matters for accuracy.

Proprietary AI Detection Models

We've invested in building our own AI detection technology from scratch. While other AI checkers simply repackage existing tools, our detector uses models developed entirely in-house. This gives us complete control over:

Detection accuracy and updates
Privacy and data security
How we handle edge cases and false positives
Adaptation to new AI writing tools

When ChatGPT or other AI tools evolve, we can update our AI checker immediately because we control the entire system.

Designed to Minimize False Positives

False positives can have serious consequences for students and writers. Our AI checker is specifically built to reduce incorrect flagging:

We analyze complete documents, not just isolated sentences
We recognize the difference between AI-assisted editing and AI-written content
We provide probability scores, not absolute judgments
We account for different writing styles, from academic to creative

Our goal isn't to catch people - it's to provide accurate, fair assessment of whether content is AI-generated or human-written.

Continuous Updates for New AI Tools

As new AI writing tools emerge (GPT-5, advanced Claude models, next-generation Gemini), we update our AI detector to maintain accuracy. Because we control our own technology rather than licensing third-party systems, we can adapt quickly to changes in the AI landscape.

Our research team monitors developments in AI writing technology to ensure our checker stays current and reliable.

What Our AI Detector Actually Analyzes

Our AI checker examines your text for patterns commonly found in AI-generated content:

Writing Flow & Structure

Human writers naturally vary their sentence lengths, paragraph structures, and transitions. AI tends to follow more predictable patterns. Our detector identifies when text feels formulaic versus organically developed.

Language Authenticity

AI-generated content often uses safe, generic phrasing and avoids risks in word choice. Human writers include personal touches, cultural references, and unexpected expressions. Our AI checker recognizes these authenticity markers.

Contextual Depth

While AI can maintain surface-level coherence, it often lacks the depth of context and subtle idea development that characterizes human writing. Our detector evaluates how naturally ideas connect and evolve throughout your text.

Consistency Patterns

AI writing often maintains unnaturally consistent quality, tone, and style throughout a document. Human writing includes natural variations, corrections, and style shifts. Our AI detector identifies these patterns.

All-In-One Solution

PassWithProof is the go-to AI writing tool for writers, and marketers.

Our tool goes beyond basic editing—it's your complete solution for creating polished, reader-friendly content.

Research Papers: Before submitting, run your paper through our AI detector to make sure it won't get flagged by plagiarism checkers.
Avoid False Positives: PassWithProof's AI Detector can help you avoid false positives by identifying AI-generated text and allowing you to make necessary adjustments.
Blog copy: With PassWithProof, you can make sure you're publishing quality SEO content that feels human and resonates with readers.
Work projects: Use AI to create reports and presentations, then use PassWithProof to ensure the final product meets quality standards.

Quality Assurance

What Makes PassWithProof's AI Checker Stand Out?

Not all AI detection tools work the same way. Here's what makes PassWithProof's AI detector different:

Proprietary Technology vs. Repackaged AI

Most AI checkers in the market simply repackage existing detection technology from third parties. PassWithProof has built our own AI detection models from scratch, trained on over 1 million real human articles.

This means:

We control our entire system - no reliance on external providers
We can update immediately when new AI tools emerge
Your data stays on our servers, not shared with third parties
We understand human writing patterns, not just AI patterns to flag

When you use our AI detector, you're using technology built specifically for accurate, fair detection - not a reskinned version of someone else's tool.

Genuine "Free" Without the Fine Print

Many AI checkers advertise as "free" but hide character limits that make them unusable for real documents:

Some limit free checks to 250 words (less than one page)
Others restrict to 5-10 scans per month
Many require signup and credit cards for "free" trials

PassWithProof's AI checker is truly unlimited:

No character limits on detection
No monthly scan caps
No credit card required
No signup barriers

Free means free. Check your entire dissertation if you want.

Built on Real Human Data

The quality of an AI detector depends entirely on its training data. Our AI checker is trained exclusively on over 1 million authentic human articles - not synthetic content, not AI-generated text mixed in.

Other detection tools often train on a mix of human and AI writing, or use publicly available datasets that may include low-quality content. PassWithProof's proprietary training on verified human writing gives our detector a fundamental advantage in accuracy.

Privacy You Can Trust

When you check text with our AI detector:

Your content is processed and immediately deleted
No storage on our servers after analysis
No account creation required (no email, no tracking)
Your writing never becomes training data
Complete confidentiality for sensitive documents

Many other AI checkers require accounts, store your submissions, or use your content to improve their models. Not PassWithProof.

Designed for Fair Assessment

Our AI checker is built specifically for educational and professional contexts where fairness matters. We provide:

Probability Scores, Not Absolute Judgments

Instead of saying "This IS AI-written," we give you percentage likelihoods. This acknowledges that no detection is perfect and encourages informed judgment.

Recognition of AI-Assisted vs. AI-Written

Our AI detector distinguishes between text completely generated by AI versus human writing that used AI tools for grammar checking or editing assistance.

Transparent Highlighting

See exactly which parts triggered detection, so you can make informed decisions rather than relying on a black-box algorithm.

This approach helps educators, students, and professionals use AI detection as a tool for dialogue and improvement - not as a punishment mechanism.

Support

Frequently Asked Questions

Will my content be stored online after checking it for AI?

Absolutely not. PassWithProof does not store your submitted content after analysis. We do not share it with third parties, and we do not use your text to train models.

Is there a limit to how many times I can use the AI Detector?

There is no limit to how many times you can use the AI Detector. You can run checks as often as you need.

How accurate is the AI Detector?

Our AI detector targets 99.8% accuracy for strongly AI-generated text. No detector is perfect, so results should be interpreted as guidance rather than absolute proof.

How do I cite PassWithProof in academic papers?

A common format is: Author or Organization (Year). PassWithProof Detector. Version (if available). URL.

What's the difference between an AI detector and an AI checker?

They are used interchangeably. Both refer to tools that analyze text and estimate whether content is AI-generated or human-written.

Can this AI detector identify text from all AI writing tools?

Our AI checker is designed to detect common patterns from major models like ChatGPT, Claude, Gemini, Llama, and other popular writing assistants.

Why did your AI checker flag my human-written text?

False positives can happen when human writing resembles AI patterns, such as highly formal structure or repetitive phrasing. Use detection results as one input, not a final verdict.

How can I improve my AI detection score?

Use varied sentence lengths, add specific examples, include authentic voice, and revise flagged passages. Then run the detector again to compare results.

Can professors use this AI detector to check student work?

Yes. We recommend using AI detection as one signal in a broader academic integrity process, alongside context and direct discussion.

Is PassWithProof's AI detector as accurate as other major tools?

PassWithProof aims for industry-leading accuracy while remaining fully free and privacy-focused, making it practical for everyday student and professional use.

Try PassWithProof for free today

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