How to Use GPTZero to Detect AI Content Like a Pro in 2026

Quick Start

This guide covers every GPTZero feature and shows you how to use GPTZero like a pro:

• Empezando — Create account and basic setup
• How to Use AI Detector — Scan text for AI-generated content instantly
• How to Use AI Vocabulary — Spot AI-style word choices in your writing
• How to Use Plagiarism Checker — Check text against online sources
• How to Use Grammar Checker — Fix grammar errors for free
• How to Use Hallucination Detector — Catch fake citations and unsupported claims
• How to Use AI Grader — Grade student work while checking for AI use
• How to Use Authorship Verification — Verify if the same person wrote a document
• How to Use Advanced AI Scan — Get sentence-level AI detection results
• How to Use Canvas Integrations — Connect GPTZero to your LMS

Time needed: 5 minutes per feature

Also in this guide: Pro Tips | Common Mistakes | Solución de problemas | Precios | Alternativas

Why Trust This Guide

I’ve used GPTZero for over a year and tested every feature covered here. This tutorial comes from real hands-on experience — not marketing fluff or vendor screenshots.

GPTZero is one of the most trusted AI detection tools available today.

But most users only scratch the surface of what it can do.

This guide shows you how to use every major feature.

Step by step, with screenshots and pro tips.

GPTZero Tutorial

This complete GPTZero tutorial walks you through every feature step by step, from initial setup to advanced tips that will make you a power user.

GPTZero

Detect AI-generated content with 99% accuracy. GPTZero scans texto from ChatGPT, GPT-5, Claude, and Gemini with the lowest false positive rate in the industry. Start free with 10,000 words per month.

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Getting Started with GPTZero

Before using any feature, complete this one-time setup.

It takes about 3 minutes.

Watch this quick overview first:

Now let’s walk through each step.

Step 1: Create Your Account

Go to gptzero.me in your browser.

Click “Get Started” in the top right corner.

Sign up with your email or Google account.

✓ Checkpoint: Comprueba tu bandeja de entrada for a confirmation email.

Step 2: Access the Dashboard

GPTZero works entirely in your web browser.

No downloads are needed to start scanning text.

Log in with your new account credentials.

Here’s what the dashboard looks like:

✓ Checkpoint: You should see the main dashboard with a text input area.

Step 3: Install the Chrome Extension (Optional)

Search “GPTZero Origin” in the Chrome Web Store.

Click “Add to Chrome” to install it.

This lets you scan text inside Google Docs and across the web.

How to Use GPTZero AI Detector

AI Detector lets you scan any text to check if it was written by AI.

Here’s how to use it step by step.

See AI Detector in action:

Now let’s break down each step.

Step 1: Paste Your Text

Copy the text you want to check.

Paste it into the main text box on the GPTZero dashboard.

For best results, use at least 200 to 250 words.

Step 2: Click “Check Origin”

Hit the scan button to start the AI detection process.

GPTZero analyzes your text using perplejidad and burstiness metrics.

Results appear in seconds with a clear percentage score.

✓ Checkpoint: You should see a result showing “Human,” “AI,” or “Mixed.”

Step 3: Review Your Results

Check the overall AI probability score at the top.

Look at the confidence statement that shows the error rate.

You can also upload files in PDF, DOCX, or TXT format.

How to Use GPTZero AI Vocabulary

AI Vocabulary lets you spot AI-style word choices that make your writing sound robotic.

Here’s how to use it step by step.

See AI Vocabulary in action:

Now let’s break down each step.

Step 1: Open the AI Vocabulary Scanner

Navigate to the AI Vocabulary tool from the GPTZero dashboard.

This is a separate scan option from the main AI detector.

Step 2: Paste and Scan Your Text

Enter your text and run the vocabulary scan.

GPTZero highlights specific words that AI tends to overuse.

✓ Checkpoint: You should see highlighted words flagged as common AI vocabulary.

Step 3: Replace Flagged Words

Swap out AI-style words for more natural alternatives.

Words like “delve,” “crucial,” and “moreover” are common AI flags.

Rewrite those sentences in your own voz.

How to Use GPTZero Plagiarism Checker

Plagio Inspector lets you find if your text matches existing online sources.

Here’s how to use it step by step.

See the Plagiarism Checker in action:

Now let’s break down each step.

Step 1: Access Plagiarism Scan

Open the GPTZero dashboard and find the plagiarism check option.

This feature requires the Premium plan at $12.99 per month.

Step 2: Submit Your Text

Paste your text or upload a document for scanning.

GPTZero checks it against billions of web pages and databases.

✓ Checkpoint: You should see a plagiarism percentage with matched sources listed.

Step 3: Review Matched Sources

Click on each flagged section to see the original source URL.

Decide whether to rewrite, cite, or remove the matching content.

How to Use GPTZero Grammar Checker

Corrector gramatical lets you fix spelling, punctuation, and grammar errors for free.

Here’s how to use it step by step.

See the Grammar Checker in action:

Now let’s break down each step.

Step 1: Open the Grammar Tool

Find the Grammar Checker on the GPTZero dashboard.

This feature is available on the free plan.

Step 2: Paste and Scan Your Text

Enter your text into the grammar checker input box.

GPTZero highlights grammar, spelling, and punctuation errors.

✓ Checkpoint: You should see underlined errors with suggested corrections.

Step 3: Apply Corrections

Click on each error to see the suggested fix.

Accept or reject each suggestion based on your writing style.

How to Use GPTZero Hallucination Detector

Hallucination Detector lets you catch fake citations and unsupported claims in any document.

Here’s how to use it step by step.

See the Hallucination Detector in action:

Now let’s break down each step.

Step 1: Upload Your Document

Go to the Hallucination Detector section on the dashboard.

Upload a document that contains citations or factual claims.

Step 2: Run the Citation Check

GPTZero checks every citation against online databases.

It flags any reference that can’t be verified as a real source.

✓ Checkpoint: You should see flagged citations highlighted in your document.

Step 3: Review Flagged Citations

Check each flagged citation to see why it was marked suspicious.

GPTZero also suggests credible sources to replace fake ones.

How to Use GPTZero AI Grader

AI Grader lets you grade alumno assignments while checking for AI use at the same time.

Here’s how to use it step by step.

See AI Grader in action:

Now let’s break down each step.

Step 1: Upload Student Assignments

Go to the AI Grader tool and upload student papers.

You can upload multiple files at once using batch scanning.

Step 2: Set Your Grading Criteria

Customize feedback by adding specific prompts or uploading a rubric file.

GPTZero scans each paper and flags AI-generated sections.

✓ Checkpoint: You should see AI scores and writing feedback for each submission.

Step 3: Review and Share Feedback

Check which parts look human-written and which look AI-generated.

Share detailed feedback reports with students directly.

How to Use GPTZero Authorship Verification

Authorship Verification lets you confirm if the same person wrote two different text samples.

Here’s how to use it step by step.

See Authorship Verification in action:

Now let’s break down each step.

Step 1: Submit a Known Writing Sample

Upload a verified document from the known author.

This serves as the baseline for writing style comparison.

Step 2: Submit the Text to Verify

Upload the document you want to check against the known sample.

GPTZero compares writing patterns, style, and voice.

✓ Checkpoint: You should see a comparison report showing similarity scores.

Step 3: Interpret the Results

Review whether the writing style matches the known author.

High similarity suggests the same person wrote both documents.

How to Use GPTZero Advanced AI Scan

Advanced AI Scan lets you see exactly which sentences triggered AI detection flags.

Here’s how to use it step by step.

See Advanced AI Scan in action:

Now let’s break down each step.

Step 1: Run an Advanced Scan

Select “Advanced Scan” instead of the basic quick scan option.

The free plan includes 5 advanced scans per month.

Step 2: Review Sentence-Level Highlighting

Each sentence is color-coded based on its AI probability.

GPTZero explains why each sentence was flagged in plain language.

✓ Checkpoint: You should see individual sentences highlighted with AI probability scores.

Step 3: Take Action on Flagged Sentences

Focus on the most heavily flagged sentences first.

Rewrite those sections in your own voice to lower the AI score.

How to Use GPTZero Canvas Integrations

Integraciones de Canvas lets you connect GPTZero directly to your learning management system.

Here’s how to use it step by step.

See Canvas Integrations in action:

Now let’s break down each step.

Step 1: Connect Your LMS

Go to your GPTZero account settings and find the integrations page.

Follow the setup instructions to link Canvas or your LMS.

Step 2: Enable AI Scanning for Assignments

Select which courses and assignments should be scanned automatically.

Student submissions are checked as they come in.

✓ Checkpoint: You should see GPTZero reports appear alongside student submissions in Canvas.

Step 3: Review Reports in Canvas

Open any student submission to see the GPTZero AI detection report.

Reports include AI probability, sentence highlighting, and writing feedback.

GPTZero Pro Tips and Shortcuts

After testing GPTZero for over a year, here are my best tips.

Atajos de teclado

Hidden Features Most People Miss

• Batch File Upload: Upload up to 10 files at once on the free plan. Premium users get unlimited batch scanning to check entire class sets.
• Writing Report in Google Docs: Install the Origin extension to see a video replay of how any Google Doc was typed, including copy-paste events and typing patterns.
• Downloadable Proof Reports: Generate PDF reports you can share as proof that content is human-written. Great for publishers and content creators.

GPTZero Common Mistakes to Avoid

Mistake #1: Scanning Text That’s Too Short

Mistake #2: Using AI Detection as the Only Evidence

Mistake #3: Relying on a Single AI Detector

GPTZero Troubleshooting

Problem: False Positive — My Human Writing Was Flagged as AI

Cause: Formulaic writing, short text, or heavily edited content can trigger false positives. Non-native English speakers are also more likely to be flagged.

Arreglar: Add more personal voice to your writing. Vary your sentence structure and length. Scan at least 250 words for better accuracy. Contact GPTZero support for a Certified Human badge if needed.

Problem: Inconsistent Results on the Same Text

Cause: Minor text changes can shift the AI probability score. GPTZero’s detection is probabilistic, not absolute.

Arreglar: Run multiple scans and look at the overall pattern. Focus on the confidence statement, not just the percentage. Use the advanced scan for more detailed results.

Problem: Chrome Extension Not Showing Reports

Cause: The GPTZero Origin extension may need updated permissions or a page refresh after installation.

Arreglar: Refresh the page after installing. Check that the extension has access to the current site. Disable and re-enable the extension in Chrome settings if needed.

📌 Nota: If none of these fix your issue, contact GPTZero support.

¿Qué es GPTZero?

GPTZero is an AI detection tool that checks whether text was written by a human or generated by AI models like ChatGPT.

Think of it like a fact-checker, but for authorship instead of accuracy.

Watch this quick overview:

It includes these key features:

• AI Detector: Scans text to determine if it was written by AI with up to 99% accuracy.
• AI Vocabulary: Highlights AI-style word choices that make writing sound robotic.
• Comprobador de plagio: Checks text against billions of web pages for duplicate content.
• Corrector gramatical: Fixes spelling, punctuation, and grammar errors for free.
• Hallucination Detector: Catches fake citations and unsupported factual claims.
• AI Grader: Grades student work while checking for AI use automatically.
• Authorship Verification: Compares writing styles to confirm document authorship.
• Advanced AI Scan: Provides sentence-level AI detection with explanations.
• Canvas Integrations: Connects directly to your LMS for automatic scanning.

For a full review, see our GPTZero review.

Precios de GPTZero

Here’s what GPTZero costs in 2026:

Prueba gratuita: Yes — the free plan gives you 10,000 words per month with no credit card needed.

Garantía de devolución de dinero: No official money-back guarantee. Cancel anytime to stop future billing.

💰 Best Value: Premium at $12.99 — it unlocks plagiarism checking, writing feedback, and advanced scans that make GPTZero far more useful than the free plan.

GPTZero vs Alternatives

How does GPTZero compare? Here’s the competitive landscape:

Quick picks:

• Best overall: GPTZero — highest accuracy with the lowest false positive rate in independent tests.
• Best budget: Undetectable — starts at just $5 per month with yearly billing.
• Best for beginners: QuillBot — simple interface with free AI detection scans built in.
• Best for publishers: Originality AI — built for content teams with team-level scanning features.

🎯 GPTZero Alternatives

Looking for GPTZero alternatives? Here are the top options:

• 🚀 QuillBot: Combines paraphrasing, grammar checking, and AI detection in one affordable tool starting at $4.17 per month.
• 💰 Originalidad IA: Built for publishers and content marketers with team dashboards, full-site scanning, and API access from $12.95 per month.
• 🎨 Winston AI: Offers a clean, simple interface with strong detection accuracy and readability scoring starting at $10 per month.
• ⚡ Smodin: All-in-one writing suite with AI detection, plagiarism checking, rewriting, and citation tools from $10 per month.
• 🔒 Texto de la pregunta: Focuses on plagiarism detection with DeepSearch technology and citation tools starting at $9.99 per month.
• 🧠 Undetectable: Detects and humanizes AI text in one platform, great for writers who want to bypass detection starting at $5 per month.
• 👶 Phrasly AI: Budget-friendly AI detection with humanizing features included, starting at $10.99 per month with a free tier available.
• 🏢 Gramáticamente: The go-to grammar tool that now includes AI detection and plagiarism checking in its Pro plan from $12 per month.

For the full list, see our GPTZero alternatives guide.

⚔️ GPTZero Compared

Here’s how GPTZero stacks up against each competitor:

• GPTZero vs QuillBot: GPTZero wins on AI detection accuracy. QuillBot wins on value with paraphrasing, grammar, and detection bundled together cheaply.
• GPTZero vs Originality AI: Both score high on accuracy. Originality AI is better for content teams with its full-site scanning and team management tools.
• GPTZero vs Winston AI: GPTZero has more features like hallucination detection and AI grading. Winston AI offers a simpler, faster scanning experience.
• GPTZero vs Smodin: GPTZero is the better AI detector. Smodin is the better all-in-one writing tool with rewriting and citation features included.
• GPTZero vs Quetext: GPTZero excels at AI detection. Quetext excels at plagiarism detection with its DeepSearch technology and citation assistant.
• GPTZero vs Undetectable: GPTZero focuses on detection. Undetectable focuses on making AI text pass detection — opposite goals at very different price points.
• GPTZero vs Phrasly AI: GPTZero is more accurate with lower false positive rates. Phrasly AI offers detection plus humanizing in one tool for a similar price.
• GPTZero vs Grammarly: GPTZero is the stronger AI detector. Grammarly is the stronger writing assistant with grammar, style, and tone suggestions built in.

Start Using GPTZero Now

You learned how to use every major GPTZero feature:

• ✅ AI Detector
• ✅ AI Vocabulary
• ✅ Plagiarism Checker
• ✅ Grammar Checker
• ✅ Hallucination Detector
• ✅ AI Grader
• ✅ Authorship Verification
• ✅ Advanced AI Scan
• ✅ Canvas Integrations

Next step: Pick one feature and try it now.

Most people start with the AI Detector.

It takes less than 5 minutes.

Preguntas frecuentes

How do you use GPTZero?

Go to gptzero.me and create a free account. Paste your text into the scanner or upload a file in PDF, DOCX, or TXT format. Click “Check Origin” and GPTZero will show you an AI probability score in seconds. For deeper analysis, use the Advanced Scan to see sentence-level highlighting.

Can GPTZero detect ChatGPT?

Yes. GPTZero detects text from ChatGPT, GPT-5, GPT-4, Claude, Gemini, Llama, Deepseek, and other major AI models. In 2026 benchmarks, GPTZero scored over 99% accuracy on pure AI-generated text. It uses seven detection methods to identify AI content from any major language model.

Is GPTZero free to use?

Yes. GPTZero offers a free plan with 10,000 words per month and 5 advanced scans. No credit card is needed. For more words and features like plagiarism checking, paid plans start at $12.99 per month. Annual billing saves up to 45% on all paid plans.

Is GPTZero better than Turnitin?

They serve different needs. GPTZero focuses on AI text detection with 99% accuracy and a free tier. Turnitin focuses on plagiarism checking for institutions. Some universities stopped using Turnitin’s AI detector over accuracy concerns. For best results, use both tools together for coverage.

How accurate is GPTZero’s AI detection?

GPTZero claims 99% accuracy on AI-generated text with a false positive rate near 1%. Independent benchmarks from Penn State’s AI Research Lab confirmed these numbers. For mixed content with both human and AI writing, accuracy is about 96.5%. Accuracy drops on text under 200 words.

Is ZeroGPT or GPTZero better?

GPTZero is generally more accurate with lower false positive rates in independent benchmarks. ZeroGPT offers free unlimited scans, which makes it attractive for casual use. For important academic or professional decisions, GPTZero’s higher accuracy makes it the better choice despite its word limits.

Does GPTZero have a humanizer?

No. GPTZero is a detection tool only. It does not rewrite or humanize AI content. If you need to make AI text sound more human, you would need a separate tool like Undetectable or Phrasly AI. GPTZero’s AI Vocabulary feature does help you spot robotic word choices to fix manually.

What is a good score on GPTZero?

A score below 10% AI probability means the text is almost certainly human-written. Scores between 10% and 50% suggest mixed content. Anything above 50% likely contains significant AI-generated text. Always check the confidence statement alongside the percentage for the full picture.

Why does GPTZero say I used AI when I didn’t?

False positives happen for several reasons. Formulaic writing, short text, heavily edited content, and non-native English can all trigger false flags. AI detection is always probabilistic and not absolute. Try scanning a longer sample, vary your sentence structure, and contact GPTZero support if you face academic consequences from a false positive.