# Hallucination Detector for Quality Information

Use our reliable source checker and AI reference finder to quickly find sources from text, essays, or research papers. A simple way for students, educators, and researchers to provide citations and evidence for their work.

99% Accuracy

17 million Users  
1 million Educators

Add to Google Docs - it‘s free!!

Paste your text or  
Upload files

Upload from Google Drive

## Hallucination Detector - Verify Sources & Bibliographies

GPTZero's Hallucination Detector automatically detects hallucinated sources and poorly supported claims in essays. Verify academic integrity with the most accurate hallucination detection tool for educators.

## Detect Hallucinated Citations & Fake Academic Sources

AI writing tools often generate convincing but non-existent citations. Our citation checker identifies these hallucinated references instantly, helping educators maintain academic integrity without spending time on manual verification.

## Advanced Citation Verification Technology

Get in-depth analysis highlighting specific sentences likely to contain hallucinated or incorrect citations, allowing educators to focus verification efforts on the most suspicious citations and claims rather than reviewing every source.

## Discover New Sources for Missing Citations

Get AI-powered suggestions for credible academic sources to support unsupported claims and strengthen arguments.

## Trusted by educators.

Kristina McElheran, Assistant Professor of Economics, University of Toronto  
"GPTZero’s feedback aligns well with my sense of what is going on in the writing - almost line-for-line."

Randi Weingarten, President, American Federation of Teachers  
"This tool is a magnifying glass to help teachers get a closer look behind the scenes of a document, ultimately creating a better exchange of ideas that can help kids learn and get excited about school when AI is used appropriately."

Justin Curl, J.D. Candidate, Harvard Law School  
"I'm a huge fan of the writing reports that let me verify my documents are human-written. The writing video, in particular, is a great way to visualize the writing process!"

## AI Text Detection and Analysis Trusted by Leading Organizations

## Built-in AI detection for classrooms and workspaces

Bring the most precise AI content checker directly into the software you use every day.

## Choose a plan to upgrade

- **Free**:  
  $0, 10,000 words per month, Basic AI Scan.
- **Premium**:  
  Most Popular, $12.99/ month, billed annually, 300,000 words per month, Advanced AI Scan.
- **Professional**:  
  $24.99/ month, billed annually, 500,000 words per month, All of Premium.

## General FAQs about GPTZero's Source Finder

### What is GPTZero's source finder?

GPTZero source finder is to detect potentially misleading claims in text and give recommendations for sources that support or contradict those claims. Our tool allows you to find any arguments or “claims” in a document that may require more scrutiny, and then links to helpful sources to dive deeper into your analysis and provide helpful context.

### How do I use GPTZero's source finder?

Source finder will detect as many checkable, objective claims in your text and match those to sources from online, academic, and publicly available data coming from AI-powered search engines. You may find sources that would directly support or contradict these claims. You can cite the relevant snippet from the source, and also citations in MLA, Chicago, APA, BibTeX and IEEE.

### Does GPTZero's source finder use AI?

We use AI to detect claims and arguments and pair them with potentially relevant sources. We actively do NOT recommend AI-generated content, due to their unreliability, and filter out sources that are potentially AI-generated.

### Does GPTZero's source finder work as a fact checker?

Our tool currently does not take a stance on whether your claims or the claims in the sources cited are true “facts” or false. We only indicate whether there is online evidence that contradicts, debates, or supports a claim.

### How does GPTZero select the sources in its database?

We allow you to search for claims from a dataset of over 220M scholarly articles, preprints and real-time news using AI next-generation recommendation AI and large language models.

### What citation styles does GPTZero support?

GPTZero supports major formats including MLA, APA, Chicago, IEEE, and BibTeX, making it easy to check sources across a variety of academic and professional settings.

### Does GPTZero support multiple languages besides English?

Yes. GPTZero was trained on a diverse multilingual dataset and supports English, Spanish, French, German, and other languages.