GPTZero
7.5#4 in ai detection softwareFrom $8.33 a monthFree planWebAPIExtension
VisitGPTZero vs Originality.ai
Originality.ai
7.6#3 in content optimization softwareFrom $12.95 a monthFree planWebAPIExtension
VisitWhat both publish
| Fact | GPTZero | Originality.ai |
|---|---|---|
| API | The API accepts files and text and returns AI-detection probabilities at document, paragraph, and sentence level, including batch inference. | The public REST API accepts scan requests and returns AI-likelihood and plagiarism results; the help page says it supports 30 languages. |
| Browser extension | The Chrome extension scans web pages and adds AI detection, citation checks, writing feedback, and writing replays to Google Docs and other workflows. | The extension scans Google Docs, web pages, or selected text and includes writing replay, typing behavior insights, and shareable reports. |
| Founded | 2023 | 2022 |
| Headquarters | New York, United States | Collingwood, Ontario, Canada |
| Integrations | GPTZero lists Google Classroom and Canvas LMS integrations, an API for developers, and a Zapier integration. | Originality.ai offers a Moodle integration for reviewing submitted work for AI-generated text and plagiarism within Moodle. |
| Privacy | GPTZero says it does not store or collect documents submitted through API calls, while dashboard inputs may be used in aggregate to improve the service. | The privacy policy says it covers data processed through the website, app, Chrome extension, API, Moodle plugin, and educational integrations. |
GPTZero plans
- FreeFree
- Essential$8.33 a month
- Premium$12.99 a month
- Professional$24.99 a month
Originality.ai plans
- BasicFree
- Pro$12.95 a month
- Pro (annual billing)$12.95 a month
- Pro (monthly billing)$14.95 a month
- Enterprise$136.58 a month
- Enterprise (annual billing)$136.58 a month
Pick GPTZero if…
GPTZero suits educators, hiring teams, publishers, journalists, and others assessing writing authenticity. Its API, browser extension, and education integrations may also suit users who want detection in existing workflows.
Pick Originality.ai if…
Originality.ai may suit website owners, content marketers, writers, and publishers who want AI, plagiarism, or content-quality checks. Its site scanning, browser extension, and API provide different ways to review pages or text.