GPTZero Blog
The AI Detective
We're here to answer the question: What does it mean to be human?
10 Best AI Detectors with Highest Accuracy (Updated October 2026)
Compare the best AI detectors of 2026 with these breakdowns of their accuracy rates, unique features, and pricing.
Adele Barlow
· 16 min read
How to Write a Cover Letter That Lands the Interview
A cover letter is more than a formality - it’s your chance to show employers why you’re right for the job. Learn to write a compelling, tailored letter with a simple structure, practical tips, templates, and samples to help you stand out.
Allie Watson
· 5 min read
GPTZero records 0 false positives on essays by ESL students or students with disabilities
Being falsely accused of using AI can be damaging, especially for students developing their writing skills. Here’s what our latest tests of GPTZero 4o reveal.
Anna Gao
· 2 min read
Presidents Say the Same Things: Analysis of 81st United Nations General Assembly Speeches
Our first analysis looked at how much of what was said at this year's General Assembly came from speeches GPTZero flagged as AI-generated. This post is an addendum to that one. Here, we look at a few examples of world leaders saying the same things, sometimes in nearly the same words, and at whether those were the speeches GPTZero flagged. We covered every General Assembly meeting with a UN transcript from September 8 to 26, which comes to 16 meetings, including the first five days of the Gene
Avikam Mangla, Edward Tian
· 13 min read
Introducing GPTZero 4o
Our new model offers even more reliability for mixed and modified AI text, with broader training and easier ways to understand results
GPTZero Team
· 7 min read
How to teach critical thinking
Some strategies for knowing how to encourage critical thinking in the classroom, and practical ways to help students recognize what a necessary skill it is.
Adele Barlow
· 9 min readGPTZero Investigation: One in Five Words at the UN General Assembly are AI-Generated
From September 8 to September 28, world leaders descended upon New York City for the 81st session of the United Nations General Assembly. This marked a major milestone in history as world leaders convened to discuss partnerships and debate major geopolitical challenges, including ongoing conflicts in Iran and Ukraine, and the role of humanity in the development of artificial intelligence. This year, the use of AI by world leaders and the debate over the use of AI have grown increasingly intertw
Edward Tian, Avikam Mangla, Alex Cui
· 6 min read
Mathematicians Are Worried About AI Proofs. But GPTZero Spotted Them All
One of the biggest days in mathematical history, or the Doomsday of mathematics? In any case, we put GPTZero to the test.
Anna Gao
· 3 min read
How AI Content Detectors Work To Check For AI
Learn how AI content detectors spot the difference between AI and human writing – with a simple breakdown of the cutting-edge technology behind the tools.
Adele Barlow
· 11 min read
What Counts as a Hallucinated Citation? A Response to CiteTracer
Earlier this year, researchers from the University of Massachusetts Amherst and Ohio State University released a paper titled “Source or It Didn’t Happen: A Multi-Agent Framework for Citation Hallucination Detection.” This paper benchmarks GPTZero’s Hallucination Check against their own citation verification tool: CiteTracer. We welcome third-party benchmarking as both a contribution to the field and a useful signal for improving our systems. However, the paper reports 62.8% recall for GPTZero o
Dmytro Nikolaiev, Nazar Shmatko, Paul Esau
· 10 min read
How to Write a Resignation Letter: Tips & Templates
Ready to leave your job on good terms? Learn how to write a professional resignation letter to protect your reputation, preserve valuable relationships, and help you move on with confidence. Explore practical tips and templates for your situation.
Allie Watson
· 5 min read
How to Write the Perfect Post-Interview Thank-You Email
A great interview is just the beginning. A well-crafted thank-you email can reinforce your first impression, highlight your qualifications, and keep you top of mind after an interview. Learn what to include, when to send it, and how to follow up by using practical templates and examples.
Allie Watson
· 6 min read
How to Write a Great Elevator Pitch in 5 Simple Steps
An elevator pitch is a short, polished introduction that highlights who you are, what you’ve accomplished, and where you’re headed. Learn how to craft a compelling pitch that makes a strong first impression and starts a conversation.
Allie Watson
· 5 min read
How to Write a Resume Summary, With Examples and Formula
Learn how to write a concise, tailored resume summary that highlights your strongest qualifications, uses relevant keywords, and makes a compelling first impression. Includes a simple formula and examples for different careers.
Allie Watson
· 5 min read
Impact of AI on the Way Students Learn
What we know so far about how students are actually using AI today, and the approaches that work when it comes to responsible AI use.
Adele Barlow
· 9 min read