GPTZero: AI Content Detector for ChatGPT & More

GPTZero has established itself as a go-to solution for spotting AI-written content across a wide range of large language models, including ChatGPT, GPT-4, Gemini, Claude, and LLaMA. Rather than delivering a simple yes-or-no verdict, the tool breaks its analysis down to the sentence level, highlighting exactly which portions of a document appear machine-generated so users can see the full picture rather than a vague score. Beyond detection, GPTZero bundles in a suite of complementary tools including plagiarism checking, authorship verification, source finding, and grammar checking, making it useful for more than just catching AI text. Its AI vocabulary detection and Advanced AI Scan features dig deeper into stylistic patterns that are common in machine-generated writing, while the AI Grader feature caters specifically to educators evaluating student submissions. Whether you're a teacher safeguarding academic integrity, a recruiter screening candidate submissions, or a writer proving your content is human-made, GPTZero offers a practical, accessible way to check text. It's available directly through a browser-based interface as well as a Chrome extension, making it easy to integrate into existing workflows.

Paste the text you want to analyze into the input box, or upload a document file directly. GPTZero scans the content and generates an overall AI-detection score along with sentence-level highlighting to show exactly where AI-generated language may appear. For deeper functionality like plagiarism checks, citation sourcing, and higher word limits, sign up for a free account or upgrade to a paid plan, and install the Chrome extension for quick access while browsing.