Paperpal logo
Pricing
LoginGet Started
leaf icon
Best AI Writing Tool for Students - Forbes
leaf icon
Works Where You Write
word icongoogle doc iconchrome iconweb extentions icon

Free AI Detector for Essays and Papers

Detect AI-written and edited text from ChatGPT, Gemini, Claude, and other AI tools. Review clearly before you submit.

Scanned
1M+
documents for AI writing patterns
Built on
24+
years of academic writing experience
Trusted by
1,500+
journals worldwide

How Does Paperpal AI Detector Review Your Writing?

sectionImage
Paperpal’s AI detector identifies paraphrased, heavily edited, and mixed AI outputs, not just fully AI-written or human-written text, so you know what to fix before submission.
  • Get a three-band AI detection report showing AI-written, human-written, and human-AI blend patterns in your text.
  • The overall score gives a quick read of AI involvement, while the breakdown reveals granular insights.
  • Hover to review highlighted sentences, refine where needed, and submit with clarity using Paperpal’s AI detection tool.

Why Choose Paperpal’s Free AI Detector?

Trained on Diverse Writing Samples

Built on 100,000+ human and AI scholarly samples from ChatGPT, Claude, and Gemini, Paperpal offers reliable detection that generic AI checkers can’t match.

unmatched feature image

Reduced False Positives

Paperpal’s multi-model checks reduce false positives by over 40%, so original writing is not judged by a single AI detector score.

unmatched feature image

Sentence-Level Review

Unlike generic AI detectors, Paperpal highlights edited and paraphrased AI text at the sentence level, not just a binary AI/human label, so you know what to fix before submission.

unmatched feature image

100% Data Security

Your sensitive academic work stays secure with Paperpal. We don’t store your drafts or use them to train our AI models.

unmatched feature image

Identify AI Text in Essays, Papers, and More

Essays
Essays

Use the AI detector for essays to check AI-like text and fix risky sections before you submit.

Research Papers
Research Papers

See where AI may have shaped your manuscript, disclose AI use responsibly, and align with submission guidelines.

Thesis and Dissertations
Thesis and Dissertations

Review AI-assisted edits across chapters to ensure the final draft reflects your own ideas and reasoning before submission.

Class Assignments
Class Assignments

Check student assignments before grading for AI-like patterns to support fair evaluation and responsible AI use.

Got a High AI Detector Score?
Here’s What to Review Next

icon img
Step 1

Understand the AI Score

A high AI detector score doesn't always mean your essay is fully AI-written. Use the score to understand which parts need review.
icon img
Step 2

Review Flagged AI Text

Check flagged sentences for AI-like phrasing or overly structured writing. AI checkers can flag those sentences even in original work.
icon img
Step 3

Fix Paraphrased AI Output

Vary sentence structure and read aloud to check flow. Small stylistic shifts reduce false positives better than automated 'humanizers.'
icon img
Step 4

Restore Your Writing Style

Restore earlier drafts to add more personality or variation in your voice. Over-editing can make the writing too uniform, resembling AI output.
icon img
Step 5

Document Your Process

Save notes, draft versions, and AI prompts to show your writing journey. This evidence can support appeals if ChatGPT detectors flag your text.
icon img
Step 6

Check AI Use Guidelines

Check your institution's AI guidelines and disclose AI use as required. Transparency ensures compliance and prevents misunderstandings.

Detect AI Text

Go Beyond AI Detection Before You Submit

Check your draft for plagiarism, AI writing signals, grammar, academic tone, references, and submission readiness in one place. Get started for free or unlock advanced checks with Paperpal Prime.

Plagiarism Checker

Reference Checker

Grammar Checker

Pre-Submission Checker

Fix accidental plagiarism before submission

Check your paper for similar phrasing, missed citations, and overlooked source matches so you can protect originality, cite clearly, and submit with confidence.
Banner Media

Ensure every reference supports your paper

Catch citation mismatches, AI hallucinated references, outdated sources, and missing links between claims and evidence before they affect credibility.
Banner Media

Fix grammar issues without losing formatting

Review grammar, punctuation, clarity, and sentence flow while keeping your formatting, meaning, and academic tone intact.
Banner Media

Clear the checks journals look for

Run 30+ language and technical checks across disclosures, metadata, formatting, tables, and figures to spot issues that can delay review or trigger avoidable revisions.
Banner Media

Why Academics ❤️ Paperpal

trustpoilot rating image

Rated Excellent on Trustpilot

"I can't recommend Paperpal enough for teachers. My students can now refine writing and grammar without losing their unique style and I can give efficient feedback so they learn faster. Paperpal has saved time and elevated my classroom assignments."

Dimitrios Gkaveras
Professor, Leonteios Nea Smyrni, Greece

"Paperpal has revolutionized my writing! It takes my ideas and adds in its magic and makes it so much better. I can't consider working on my writing without the help of Paperpal."

Jenny Dee
Jenny Dee
Teacher, University of Technology, Sydney

"I write about 5-8 emails per day for the US team. I love how Paperpal makes sentences sound personal, yet academic, unlike ChatGPT, which makes sentences very hard and formal."

Cristina Martin
Cristina Martin
Digital Analyst, e-commerce, Molson Coors, Romania

"As a researcher and professor, I like Paperpal for its editing quality and comprehensive features for writing and submitting journal manuscripts. I recommend it to my undergraduate and graduate students."

Ricardo Cobucci
Ricardo Cobucci
Professor, Potiguar University, Brazil

"Paperpal has saved me from grammar mistakes and possible bad grades as a student. It doesn’t make mistakes like Grammarly and has always perfectly edited every essay. I highly recommend Paperpal, it has helped me immensely through high school and college."

Talia Kim
Student, USA

"Ever since I’ve been using Paperpal I haven’t received one mark against my grammar. I went from getting B’s on my papers to A’s. Now instead of dreading writing papers, I look forward to it because of Paperpal."

Angela Jones
Angela Jones
Student, Southern New Hampshire University, USA

"Paperpal doesn't just edit my writing; it boosts my confidence. With Paperpal, I feel assured that my arguments are well-structured, my language is clear and concise, and my paper meets the high standards of academic publishing."

Darryl Sutphin
Darryl Sutphin
Graduate Student, Georgia Institute of Technology, USA

"Paperpal has increased my productivity and made it easier to finalize ideas and projects. Paperpal also corrects my non-native English to sound professional and academic. I highly recommend it to everyone from students to experienced researchers."

Ivan Šitum
Ivan Šitum
PhD Student, University Hospital Center Zagreb, Croatia

"Paperpal helped me cut down several hours in finding, reading, and verifying research articles. This freed-up time is now better allocated to essential tasks like securing more work and contracts."

James Lembeck
Senior Researcher, Colorado Therapeutic Enterprises, USA

"With Paperpal, I can think and write confidently without any reservations knowing that it will articulate my ideas clearly. Paperpal is invaluable for researchers looking to enhance their writing skills and communicate more effectively."

Soha Elzalabany
Soha Elzalabany
Mid-career Researcher, American University in Cairo, Egypt

"As a researcher, proofreading with Paperpal's language suggestions comes in handy in ensuring timely delivery of manuscripts and stress-free collaboration with international partners."

Wilson Gbedema
Wilson Gbedema
PhD Student, Knust, Ghana

"I have tried a lot of AIs and by far Paperpal has given me what I prefer— high-quality academic writing. It makes fact-checking easy and offers the right writing and editing support needed in the academic domain."

 Jaclyn Azuela
Jaclyn Azuela
Professor, University of the Immaculate Conception, Philippines

"I was amazed at how Paperpal helped me develop a new research proposal. The Research and Cite features dramatically reduced the time spent on literature search and the detailed editing mode fine-tuned my draft for submission."

Dr. Greg Carey
Dr. Greg Carey
Former Lecturer, Flinders University, Australia

"I started using Paperpal for my final year project write up and literature review. It provides academic language changes that no other assistive technology I have used has been able to provide. I would recommend Paperpal to anyone writing essays or papers in an academic setting."

Jessica Campbell
Pharmacy Student, Queens University Belfast, United Kingdom

"I can't recommend Paperpal enough for teachers. My students can now refine writing and grammar without losing their unique style and I can give efficient feedback so they learn faster. Paperpal has saved time and elevated my classroom assignments."

Dimitrios Gkaveras
Professor, Leonteios Nea Smyrni, Greece

"Paperpal has revolutionized my writing! It takes my ideas and adds in its magic and makes it so much better. I can't consider working on my writing without the help of Paperpal."

Jenny Dee
Jenny Dee
Teacher, University of Technology, Sydney

"I write about 5-8 emails per day for the US team. I love how Paperpal makes sentences sound personal, yet academic, unlike ChatGPT, which makes sentences very hard and formal."

Cristina Martin
Cristina Martin
Digital Analyst, e-commerce, Molson Coors, Romania

"As a researcher and professor, I like Paperpal for its editing quality and comprehensive features for writing and submitting journal manuscripts. I recommend it to my undergraduate and graduate students."

Ricardo Cobucci
Ricardo Cobucci
Professor, Potiguar University, Brazil

"Paperpal has saved me from grammar mistakes and possible bad grades as a student. It doesn’t make mistakes like Grammarly and has always perfectly edited every essay. I highly recommend Paperpal, it has helped me immensely through high school and college."

Talia Kim
Student, USA

"Ever since I’ve been using Paperpal I haven’t received one mark against my grammar. I went from getting B’s on my papers to A’s. Now instead of dreading writing papers, I look forward to it because of Paperpal."

Angela Jones
Angela Jones
Student, Southern New Hampshire University, USA

"Paperpal doesn't just edit my writing; it boosts my confidence. With Paperpal, I feel assured that my arguments are well-structured, my language is clear and concise, and my paper meets the high standards of academic publishing."

Darryl Sutphin
Darryl Sutphin
Graduate Student, Georgia Institute of Technology, USA

"Paperpal has increased my productivity and made it easier to finalize ideas and projects. Paperpal also corrects my non-native English to sound professional and academic. I highly recommend it to everyone from students to experienced researchers."

Ivan Šitum
Ivan Šitum
PhD Student, University Hospital Center Zagreb, Croatia

"Paperpal helped me cut down several hours in finding, reading, and verifying research articles. This freed-up time is now better allocated to essential tasks like securing more work and contracts."

James Lembeck
Senior Researcher, Colorado Therapeutic Enterprises, USA

"With Paperpal, I can think and write confidently without any reservations knowing that it will articulate my ideas clearly. Paperpal is invaluable for researchers looking to enhance their writing skills and communicate more effectively."

Soha Elzalabany
Soha Elzalabany
Mid-career Researcher, American University in Cairo, Egypt

"As a researcher, proofreading with Paperpal's language suggestions comes in handy in ensuring timely delivery of manuscripts and stress-free collaboration with international partners."

Wilson Gbedema
Wilson Gbedema
PhD Student, Knust, Ghana

"I have tried a lot of AIs and by far Paperpal has given me what I prefer— high-quality academic writing. It makes fact-checking easy and offers the right writing and editing support needed in the academic domain."

 Jaclyn Azuela
Jaclyn Azuela
Professor, University of the Immaculate Conception, Philippines

"I was amazed at how Paperpal helped me develop a new research proposal. The Research and Cite features dramatically reduced the time spent on literature search and the detailed editing mode fine-tuned my draft for submission."

Dr. Greg Carey
Dr. Greg Carey
Former Lecturer, Flinders University, Australia

"I started using Paperpal for my final year project write up and literature review. It provides academic language changes that no other assistive technology I have used has been able to provide. I would recommend Paperpal to anyone writing essays or papers in an academic setting."

Jessica Campbell
Pharmacy Student, Queens University Belfast, United Kingdom

Frequently Asked Questions

AI detectors or AI checkers are tools that identify whether a piece of writing, or even an image, was generated using AI writing tools like ChatGPT. As generative AI becomes more advanced, many academics use it to speed up writing tasks, sometimes unintentionally compromising originality or accuracy. That’s why universities, journals, and institutions increasingly rely on AI content detectors to uphold academic integrity in essays, theses, and research papers.

These AI text detectors work by analyzing linguistic patterns, sentence structures, and stylistic features that reveal the likelihood of AI-generated content. They use advanced machine learning models trained on both human- and AI-written text to assign a confidence score showing how likely content was created by AI. This helps writers, educators, and reviewers identify sections that may need reworking or citation before submission.

To assess writing authenticity, ChatGPT detectors typically apply techniques such as classifiers (to predict AI authorship), embeddings (to analyze contextual meaning), perplexity (to gauge predictability), and burstiness (to measure sentence variety). While no AI checker is perfect, tools like Paperpal’s AI detector combine these approaches with academic context awareness, offering more reliable insights to help maintain originality, trust, and ethical writing practices.

Preserve Your Voice in the Age of AI

cactus logo
Copyright 2026 Cactus Communications. All rights reserved.