GPTZero vs TheChecker.AI
GPTZero
gptzero.me
TheChecker.AI
thechecker.aiSide by side
| Figure | GPTZero | TheChecker.AI |
|---|---|---|
| Price from | $8.33/mo | $8.25/mo |
| Free plan | Yes | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 4 | 9 |
| Spec score · AI Content Detectors | 8.8 (#3) | 7.3 (#23) |
| Spec score · AI Content Detection Software | 8.9 (#9) | 7.4 (#36) |
| 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 Chrome extension page says the extension is coming soon and describes planned one-click checks, page scanning, and support for Google Docs and Gmail. |
| Company | The team page says GPTZero is based in New York and Toronto and was founded in January 2023. | The service is operated by Girema Holdings Limited, whose contact page lists an address in Limassol, Cyprus. |
| Headquarters | New York, United States | Limassol, Cyprus |
| Integrations | GPTZero lists Google Classroom and Canvas LMS integrations, an API for developers, and a Zapier integration. | The homepage describes an MCP connection for Claude or other MCP clients, with detection and humanization tools using the same account. |
| 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 text is processed immediately and not stored permanently unless results are saved in an account; the homepage says demo checks are not saved and account scans are saved. |
| Security | GPTZero states it is SOC 2 Type II compliant and lists CCPA, GDPR, FERPA, HECVAT, and VPAT commitments or assessments. | The privacy policy says the company uses encryption in transit and at rest, regular security assessments, and access controls. |
| Support | The site directs users to its Support Center and customer service team for help. | The features page advertises 24/7 support, while the yearly plan includes priority support. |
Plans
GPTZero
- FreeFree
- Essential$8.33 a month
- Premium$12.99 a month
- Professional$24.99 a month
TheChecker.AI
- Monthly$9.90 a month
- Yearly$99 a year
- Starter Humanizer Credits$5, paid once
- Standard Humanizer Credits$15, paid once
- Pro Humanizer Credits$35, paid once
- EnterprisePriced on request
- Humanizer Starter$5, paid once
- Humanizer Standard$15, paid once
- Humanizer Pro$35, paid once
In their own words
GPTZero
GPTZero identifies likely AI-generated writing and highlights detected AI use at document, sentence, and word level. Its detector can classify text as human, AI, or mixed, and provides confidence scores, explanations, AI vocabulary, and sentence-by-sentence highlighting. Advanced Scan points to passages contributing most to an AI classification. Users can submit pasted text or DOCX, PDF, and image files; the technology page says it can analyze up to 50 files at a time. GPTZero lists support for English, German, Portuguese, French, and Spanish, and detector coverage for text from ChatGPT, GPT-3 through GPT-6, Gemini, Claude, Copilot, and other models. Additional tools include Writing Replay, plagiarism checking, writing feedback, and grammar checking. The Chrome extension scans webpages and Google Docs, and integrations include Google Classroom, Canvas, an API, and Zapier. GPTZero says its results may be wrong, perform better on longer English prose, and should not be used alone to punish students. The free plan costs nothing. Paid plans start at $8.33 a month when billed annually.
TheChecker.AI
TheChecker.AI has no write-up on Specifiction yet; its figures are above.