# GPTZero

> GPTZero is a New York-based AI startup that builds tools to detect AI-generated text and verify human authorship. Launched in January 2023 by Princeton senior Edward Tian, it grew from a viral side project into a profitable company serving over 10 million users and 100+ organizations across education, hiring, publishing, and legal. Its mission is to restore trust and transparency to writing on the internet as large language models flood it with machine-made text.

- **Founded:** 2023
- **Headquarters:** New York, New York, United States
- **Founders:** Edward Tian (Co-founder & CEO), Alex Cui (Co-founder & CTO)
- **Team size:** ~140 employees (per data providers; varies by source)
- **Products:** AI Detector / AI Checker, Deep Scan, Writing Reports / Writing Replay, Origin Chrome Extension & Google Docs integration, AI Detection API
- **Notable:** Grew from a January 2023 launch to over 10 million users, Named a #1 Best AI Software Product of 2025 by a major review platform, Reached profitability before raising its Series A

## Products & services

- **AI Detector / AI Checker** — Free and paid web tool that analyzes text and estimates how likely it was generated by AI models like ChatGPT, GPT-5, and Gemini, with sentence-level highlighting.
- **Deep Scan** — Granular analysis with color-coded highlights distinguishing AI from human sections, plus statistical breakdowns of mixed AI-human documents.
- **Writing Reports / Writing Replay** — Captures and replays the writing process, analyzing typing patterns to provide evidence of how a document was actually created.
- **Origin Chrome Extension & Google Docs integration** — Live AI detection as you write, customizable feedback comments, writing replay reports, and a research-focused citation and fact checker inside Google Docs.
- **AI Detection API** — Programmatic detection for organizations and platforms, plus integrations with Canvas, Moodle, Zapier, and other LMS and workflow tools.
- **Batch File Scans & Writing Sandbox** — Scan multiple files at once and monitor the writing process with improvement insights, used by institutions at scale.

## Achievements

- Grew from a January 2023 launch to over 10 million users
- Named a #1 Best AI Software Product of 2025 by a major review platform
- Reached profitability before raising its Series A
- Adopted by 3,500+ colleges and 100+ organizations
- Raised $13.5M total from notable AI and media investors

## Latest updates

- **2024-06** — Announced a $10M Series A led by Footwork to scale responsible AI adoption.
- **2025-01** — Surpassed 10 million users and expanded Google Docs and LMS integrations.
- **2026-04** — Edward Tian led office hours and a 'Teaching Responsibly with AI' certificate program, offering teachers a free year of access.

## Links

- Website: https://gptzero.me
- LinkedIn: https://www.linkedin.com/company/gptzero
- Twitter/X: https://twitter.com/gptzeroai
- Facebook: https://facebook.com/gptzero

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Profile page: https://yespress.io/gptzero
Published by YesPress — https://yespress.io
Last updated: 2026-06-07