• Get started
    Access Walter dashboard to humanize and detect AI-generated content.
    Go To Dashboard Start Free Trial Login
Resources
New: Walter MCP connector for Claude is live.
Walter Writes AI

Free AI Detector & AI Checker for ChatGPT, Claude & Gemini Text

Detect AI-generated text from ChatGPT, Claude and Gemini instantly.

Free & unlimited checks
Detects ChatGPT, Claude, and Gemini outputs
Accurate AI percentage score for every scan

Trusted by Students, Educators, and Professionals Who Rely on AI Detection Accuracy

Trusted by Students, Educators & Professionals Who Depend on Accurate AI Detection Used by schools, universities, and organizations that need reliable AI writing detection and content verification at scale.

Students

Check AI in Essays

Check your essays, assignments, or research papers for AI-generated content before submission. Walter Writes’ free AI detector for students ensures your work passes AI checks, reads authentically human, and avoids unnecessary academic flags.

Researchers & Academics

Verify Academic Integrity

Verify academic integrity by detecting whether citations, abstracts, or literature reviews were AI-generated. Walter Writes’ AI content detector identifies ChatGPT- or Claude-written sections with high precision, helping researchers maintain originality and transparency in academic writing.

Educators

Analyze Student Submissions

Analyze student writing to identify AI involvement instantly. Walter Writes’ AI checker for educators helps uphold authorship standards, confirm genuine work, and support responsible AI literacy in classrooms and higher education.

SEO & Content Teams

Detect AI in Blog Content

Evaluate blog posts, articles, and website copy before publishing. Our AI text detector finds detectable AI phrasing or uniform tone that can impact E-E-A-T signals and search rankings — helping editors publish trustworthy, authentic content.

Journalists & Publishers

Verify Editorial Authenticity

Scan articles, op-eds, and contributor submissions to verify whether content was generated or assisted by AI tools. Walter Writes’ AI detection software ensures transparency, accuracy, and editorial trust across newsrooms and publishing workflows.

Legal & Compliance Professionals

Validate Human-Written Documents

Validate that contracts, legal filings, or corporate documents are human-written and compliant. Our AI writing detector helps identify AI-generated language in sensitive documents, supporting compliance integrity and reducing reputational risk.

Check Content for AI
Comparison of AI-generated content versus humanized text. Left panel labeled ‘AI Content’ shows robotic writing, while right panel labeled ‘100% Human-Written’ shows natural writing with green checkmarks and detection results marked as human.

What Is an AI Detector and How Does It Work?

An AI detector (also called an AI checker or AI content detector) analyzes writing to determine whether it was created by artificial intelligence models like ChatGPT, Claude, or Gemini.

These tools don’t look for hidden watermarks, instead, they evaluate linguistic probability patterns such as:

Perplexity: How predictable the word choices are (AI text = low perplexity).

Burstiness: How varied sentence length and structure are (AI text = low variation).
Semantic Flow: Whether phrasing and transitions match human rhythm.

Our AI detection tool uses these metrics to generate a human-likeness percentage – the higher the score, the more likely the writing is authentically human.

Start Free Trial
AI detector interface showing AI-generated text detection results with confidence scores and human vs AI writing indicators

Detect AI Text from ChatGPT, Claude, and Gemini

Our AI detector accurately identifies text written by:

ChatGPT (GPT-3, GPT-4, GPT-5): Detects low-variance, formal phrasing common in OpenAI outputs.

Claude (Anthropic): Recognizes analytical structure and symmetrical sentence flow.

Gemini (Google): Flags conversational or fact-dense synthesis typical of Google AI.

Whether you’re reviewing essays, blogs, or business reports, this tool spots AI-generated content with unmatched precision.

Check Your Content for AI – Start Free

AI Detection That’s Built for Accuracy, Speed, and Trust

Detect AI-written content from ChatGPT, Claude, Gemini, GPT-4, and GPT-5 in seconds.

Walter Writes’ AI content detector and GPT detector delivers multi modal analysis, multilingual scanning, and advanced AI probability scoring, so you can confidently verify essays, reports, blogs, or business documents with industry-leading precision.

High-Precision Detection

Identify AI-generated text with advanced algorithms designed for maximum accuracy.Walter Writes’ AI checker tool analyzes tone, structure, and predictability to detect AI patterns with high confidence.

Multi-Model Detection

Scan content across multiple large language models, including GPT-3, GPT-4, GPT-5, Claude, and Gemini.Our GPT detector adapts to evolving AI models, ensuring reliable identification of AI-generated writing.

Real-Time Analysis

Receive instant results with real-time AI detection scoring.Perfect for educators, SEO teams, and professionals needing high-volume content verification without delays.

Instant AI Probability Score

See exactly how much of your text may be AI-generated.The AI probability checker displays a clear percentage score, helping you make informed content decisions.

Multilingual AI Checking

Detect AI-written content in 20+ languages, including English, Spanish, French, German, and Portuguese.Ideal for global educators and researchers working across multilingual submissions.

Perfect for Academic & Business Use

Whether you’re a student, teacher, or professional, Walter Writes’ AI detection tool ensures accuracy, fairness, and transparency in every document you verify.
Start Free Trial
AI content detection interface displaying loading animation while analyzing text for AI-generated content.

Get a Clear AI Detection Score in Seconds with Walter Writes’ AI Checker

Once scanned, your content is evaluated with a precise AI detection score powered by Walter Writes’ advanced AI checker. The report instantly shows how likely your text was generated by AI or written by a human. Designed for students, educators, SEO editors, and researchers, our tool delivers clear, real-time AI probability results you can trust for originality and authorship verification.

AI detector result showing 100% probability that the text is AI-generated

AI Content Detector Built for Reliability, Speed, and Accuracy

AI-generated writing can be difficult to identify, but our AI content detector and GPT detector make it simple. Walter Writes AI uses multi-model analysis to determine whether text was likely created by tools such as ChatGPT, Claude, or GPT-4/5. Whether you’re checking essays, research papers, or professional content, our AI checker provides reliable results in seconds, confirming authenticity and improving writing integrity.

Try AI Detector Free
AI detection tool identifying AI-generated text with a 100% AI score, highlighting documents and messages flagged as AI-written

How Our AI Detector Protects Academic Integrity

Academic institutions depend on accurate and transparent AI detection to uphold fairness, integrity, and trust in learning. Walter Writes’ AI Detector promotes responsible AI literacy — emphasizing understanding, not punishment.

It helps students recognize when drafts rely too heavily on AI tools, enables teachers to detect AI-generated writing while protecting student privacy, and integrates ethically with resources like the AI Humanizer for academic writing to support authentic learning.

See Your AI Score – Try It Free Now

How the Free AI Detector Works in 3 Simple Steps

Detect AI-generated content from ChatGPT, GPT-4, Claude, and more in seconds with a single AI detection scan.

1

Paste Your Text

Copy and paste any text you want to check essays, blog posts, reports, or emails right inside the AI checker.

2

Scan for AI Content

Click “Scan for AI” and our detection engine will instantly analyze and check for signs of AI-generated text.

3

Get Your AI Detection Score Instantly

Instantly view a confidence score showing how likely your content was AI-generated, based on advanced linguistic analysis.

Scan Your Content for AI Now
AI content detector highlighting suspected AI-generated text within an academic-style paragraph about childhood development and personality traits.

Why Accuracy and Trust Matter in AI Detection Tools

Accuracy in AI detection matters. A false flag can impact grades, credibility, or trust — which is why Walter Writes AI is trained to deliver the most accurate AI detection results available. Our AI detection engine minimizes false positives across models like ChatGPT, GPT-5, Claude, and Gemini, ensuring dependable results for educators, journalists, and professionals who need to verify human-authored writing with confidence.

Test GPT Detector Now
AI content detector highlighting suspected AI-generated text within an academic-style paragraph about childhood development and personality traits.

The AI Detector API Built for Production Apps

Catch AI-Generated Text Automatically Inside Your Stack

If you’re moderating user content, screening academic submissions, or auditing AI-assisted copy at scale, manual checks can’t keep up. Walter’s API exposes the same detection engine behind our app, accessible through a single REST endpoint — calibrated to flag ChatGPT, Claude, and Gemini output with the accuracy our customers verify in production every day.

  • One REST endpoint, JSON in and out — integrate in under an hour
  • Returns per-paragraph confidence scores plus an overall AI probability
  • Tested against ChatGPT, Claude, Gemini, and Llama outputs across short and long-form text
Try the AI Detector API

AI Detector FAQs: Everything You Need to Know AI Detector FAQs

Get quick answers about Walter Writes AI’s detection tool, how it works, and how to get started for free.

  • What is Walter Writes AI’s AI Detector?

    Walter Writes AI includes a powerful AI checker and detector that identifies whether text was written by AI models like ChatGPT, Claude, or GPT-4. It’s fast, accurate, and easy to use - perfect for students, editors, educators, and professionals who want trusted AI content verification.

  • What types of content can I check for AI?

    You can scan essays, research papers, blog posts, emails, job applications, and more. Any English-language content can be pasted into the tool to check for AI-written patterns.

  • Are AI detectors reliable or accurate?

    No AI detector can guarantee 100% accuracy, but Walter Writes AI is one of the most reliable detection systems available. It combines linguistic analysis, probability scoring, and continuous model training to improve precision and reduce false positives.

  • Can AI detectors tell if text was written by ChatGPT or GPT-4?

    Yes. Walter Writes AI’s detector identifies patterns typical of ChatGPT, GPT-4, Claude, and other large language models. The tool uses multi-model detection to flag stylistic and structural signals unique to AI-generated writing.

  • Can AI detectors work in other languages besides English?

    Yes. Walter Writes AI supports multilingual detection, including Spanish, French, German, and Portuguese, making it ideal for global institutions and international students.

  • Does the AI detector work for business or SEO content?

    Yes. Walter Writes AI helps editors, marketers, and SEO teams identify AI-generated sections that may affect ranking or E-E-A-T trust signals. Detecting and humanizing AI-written content improves readability and credibility across websites.

  • Is there a free AI detector or trial version?

    Yes. Walter Writes AI offers a free AI checker trial so you can test detection accuracy before subscribing. You’ll get an AI probability score and detailed section-by-section report instantly.

  • Is there an API for the AI detection tool?

    If you’re interested in using our detection engine via API, please contact us for early access opportunities .

  • What types of content can I check for AI?

    You can scan essays, research papers, blog posts, SEO articles, emails, and job applications. The AI content detector analyzes any English text (and multiple other languages) to determine if it’s AI-generated or human-written.

  • What’s the difference between an AI detector and a plagiarism checker?

    AI detectors identify whether text was generated by artificial intelligence (like ChatGPT or GPT-4 and 5), while plagiarism checkers compare writing against existing online sources. Walter Writes AI specializes in detecting AI-written content, not matching copied text, so you can verify authorship with confidence.

  • How accurate are Walter Writes AI detection results?

    Walter Writes AI uses industry-leading AI writing detection algorithms and advanced model training. While no tool can guarantee 100% certainty, it provides high-confidence scores you can trust for essays, articles, and reports.

  • How do teachers and schools detect AI writing?

    Educators use tools like Walter Writes AI to check essays and assignments for AI-generated text. The detector highlights likely AI-written sections, helping teachers maintain academic integrity while supporting transparent learning.

    For a detailed breakdown of methods used in higher education, see our full guide on how professors detect AI in student work.

  • Can I check entire documents or PDFs for AI?

    Yes. You can upload full documents to scan for AI-written text. The AI detector analyzes essays, reports, or long-form articles and returns an AI probability score for each section.

  • Does Walter Writes AI offer plagiarism detection too?

    Walter Writes focuses on AI content detection, not plagiarism comparison. If you need to verify originality or human authorship, our tool is optimized for detecting AI use, not matching copied sources.

  • What happens if my content is flagged as AI-generated?

    If your writing scores as “AI-generated,” review the flagged sections for overly formal tone or repetitive phrasing. Then use Walter Writes’ AI Humanizer to rework those parts — preserving your ideas while restoring a natural human voice.

  • Where can I read Walter's full 2025 guide to AI detector tools?

    See our in-depth roundup here: Best AI Detector Tools (We Tested Them All). We compare accuracy, false-positive rates, pricing, screenshots, and give workflow tips for safer publishing.

  • What is Walter Writes AI’s AI Detector?

    Walter Writes AI includes a powerful AI checker and detector that identifies whether text was written by AI models like ChatGPT, Claude, or GPT-4. It’s fast, accurate, and easy to use - perfect for students, editors, educators, and professionals who want trusted AI content verification.

  • What types of content can I check for AI?

    You can scan essays, research papers, blog posts, SEO articles, emails, and job applications. The AI content detector analyzes any English text (and multiple other languages) to determine if it’s AI-generated or human-written.

  • What types of content can I check for AI?

    You can scan essays, research papers, blog posts, emails, job applications, and more. Any English-language content can be pasted into the tool to check for AI-written patterns.

  • What’s the difference between an AI detector and a plagiarism checker?

    AI detectors identify whether text was generated by artificial intelligence (like ChatGPT or GPT-4 and 5), while plagiarism checkers compare writing against existing online sources. Walter Writes AI specializes in detecting AI-written content, not matching copied text, so you can verify authorship with confidence.

  • Are AI detectors reliable or accurate?

    No AI detector can guarantee 100% accuracy, but Walter Writes AI is one of the most reliable detection systems available. It combines linguistic analysis, probability scoring, and continuous model training to improve precision and reduce false positives.

  • How accurate are Walter Writes AI detection results?

    Walter Writes AI uses industry-leading AI writing detection algorithms and advanced model training. While no tool can guarantee 100% certainty, it provides high-confidence scores you can trust for essays, articles, and reports.

  • Can AI detectors tell if text was written by ChatGPT or GPT-4?

    Yes. Walter Writes AI’s detector identifies patterns typical of ChatGPT, GPT-4, Claude, and other large language models. The tool uses multi-model detection to flag stylistic and structural signals unique to AI-generated writing.

  • How do teachers and schools detect AI writing?

    Educators use tools like Walter Writes AI to check essays and assignments for AI-generated text. The detector highlights likely AI-written sections, helping teachers maintain academic integrity while supporting transparent learning.

    For a detailed breakdown of methods used in higher education, see our full guide on how professors detect AI in student work.

  • Can AI detectors work in other languages besides English?

    Yes. Walter Writes AI supports multilingual detection, including Spanish, French, German, and Portuguese, making it ideal for global institutions and international students.

  • Can I check entire documents or PDFs for AI?

    Yes. You can upload full documents to scan for AI-written text. The AI detector analyzes essays, reports, or long-form articles and returns an AI probability score for each section.

  • Does the AI detector work for business or SEO content?

    Yes. Walter Writes AI helps editors, marketers, and SEO teams identify AI-generated sections that may affect ranking or E-E-A-T trust signals. Detecting and humanizing AI-written content improves readability and credibility across websites.

  • Does Walter Writes AI offer plagiarism detection too?

    Walter Writes focuses on AI content detection, not plagiarism comparison. If you need to verify originality or human authorship, our tool is optimized for detecting AI use, not matching copied sources.

  • Is there a free AI detector or trial version?

    Yes. Walter Writes AI offers a free AI checker trial so you can test detection accuracy before subscribing. You’ll get an AI probability score and detailed section-by-section report instantly.

  • What happens if my content is flagged as AI-generated?

    If your writing scores as “AI-generated,” review the flagged sections for overly formal tone or repetitive phrasing. Then use Walter Writes’ AI Humanizer to rework those parts — preserving your ideas while restoring a natural human voice.

  • Is there an API for the AI detection tool?

    If you’re interested in using our detection engine via API, please contact us for early access opportunities .

  • Where can I read Walter's full 2025 guide to AI detector tools?

    See our in-depth roundup here: Best AI Detector Tools (We Tested Them All). We compare accuracy, false-positive rates, pricing, screenshots, and give workflow tips for safer publishing.

Ready to See What’s AI and What’s Not?

Walter Writes AI’s free checker detects AI-generated text in seconds. Scan essays, emails, and more—no credit card required.

Start Free — No Card Required

AI Detection Scorecard

Human-Written Score:
98%

What Real Customers Are Saying About Walter’s AI Detector

From classrooms to hiring teams, professionals across industries trust Walter AI to identify AI-generated content with precision.

"I have used a number of AI detectors, but Walter's AI Detector is one of the most simple to use and most reliable. It highlights exactly where AI is suspected and gives you actionable feedback - it has become a part of my grading workflow."

Business Professor

"We use Walter's AI Detector to vet cover letters and written responses. It is quick and accurate and is very easy to integrate into our hiring review process. It allows us to have a consistent standard that eliminates bias."

Tech Recruiter & Career Coach

"As a journalist, as an executive director of a journalism school, I frequently receive guest articles, articles, and pitches. Walter's AI Detector allows me to quickly determine if submissions are original or AI-generated copy. It has become an important part of my editorial duties."

Features Editor

"I wanted to see if my essay would raise any AI detectors before I submitted it. Walter's AI Detector gave me a clear score and alerted me to risky sections. It also prevented me from being flagged for plagiarism."

Undergraduate Student

Learn more about AI detection

Explore expert-written articles on how AI detectors work, how to avoid false positives, and the evolving landscape of AI content verification in education, hiring, and beyond.
Walter Writes AI - AI humanizer and AI Detection
25 min read

Does Grammarly Get Detected as AI by Leading AI Detectors? What Tools to Use and Avoid

Every time you use Grammarly for a few tweaks while submitting a thesis or report, a question might cross your mind: “Does Grammarly get detected as AI?” Students are particularly concerned about this issue today, as Turnitin has recently begun evaluating submissions for AI-based content, and several institutions have increased the rigor of their policy...

Lisa Braswick
AI Content Specialist
Read
Walter Writes AI - AI humanizer and AI Detection
25 min read

Best AI Detectors for Teachers in 2026: Top Tools to Detect AI-Written Student Work

The best AI detectors for teachers in 2026 are Turnitin AI Detection, Originality.ai, Proofademic, ChatGPTZero, and Copyleaks. All five catch raw ChatChatGPT output reliably. The difference between them shows up on humanized and mixed-source content, where accuracy ranges from 12% (Grammarly) to 78% (Turnitin in our 2026 testing). False positive rates matter as much as...

Lisa Braswick
AI Content Specialist
Read