GPTZero vs ZeroTrue
GPTZero
gptzero.meZeroTrue
zerotrue.appSide by side
| Figure | GPTZero | ZeroTrue |
|---|---|---|
| Price from | $8.33/mo | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 4 | 4 |
| Spec score · AI Detection Software | 9.0 (#5) | 8.2 (#17) |
| API | The API accepts files and text and returns AI-detection probabilities at document, paragraph, and sentence level, including batch inference. | The API uses one request pattern across text, images, audio, video, and code, with batch processing and asynchronous webhooks listed as capabilities. |
| Company | The team page says GPTZero is based in New York and Toronto and was founded in January 2023. | The site identifies the company as ZeroTrue Inc. |
| Integrations | GPTZero lists Google Classroom and Canvas LMS integrations, an API for developers, and a Zapier integration. | The product site advertises Android and iOS apps, a Telegram bot and Mini App, MCP connectivity, an agent skill and SDK integrations. |
| Intended users | GPTZero describes its audiences as educators and students, as well as publishers, recruiters, copywriters, marketers, and businesses. | ZeroTrue identifies enterprise review, journalism and OSINT, platform integrity, and developer products as fit areas. |
| Security | GPTZero states it is SOC 2 Type II compliant and lists CCPA, GDPR, FERPA, HECVAT, and VPAT commitments or assessments. | The public website and application endpoints are served over HTTPS; the site advises confirming data location, retention, deletion, access controls, and deployment requirements before production use. |
| What it does | GPTZero detects likely AI-generated writing and identifies AI use at document, sentence, and word level. | ZeroTrue detects signals associated with AI-generated or manipulated text, images, audio, video and source code. |
Plans
GPTZero
- FreeFree
- Essential$8.33 a month
- Premium$12.99 a month
- Professional$24.99 a month
ZeroTrue
- FreeFree
- DeveloperPrice not published
- EnterprisePriced on request
- GrowthPriced on request
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.
ZeroTrue
ZeroTrue checks text, images, audio, video, and code for signs that content may be AI-generated, through a web checker and API. Results give an overall probability and supporting details, such as highlighted regions or timestamps, for a person to assess; they are not proof of authorship or intent. The API uses one request pattern across the listed media types, with batch processing and asynchronous webhooks among its capabilities. Python, TypeScript, and Go SDKs are listed, along with Android and iOS apps, a Telegram bot and Mini App, MCP connectivity, and an agent skill. Detection confidence can be reduced by short samples, editing, compression, translation, re-recording, mixed human and AI content, or new generators. The free web image checker accepts JPG and PNG files up to 10 MB. The free plan is free and includes 100 detections per month, API access, a web dashboard, and community support. Enterprise features include on-premise deployment, SSO and SAML, a custom SLA, and a dedicated account manager. ZeroTrue advises human review rather than relying on detector results alone for high-impact decisions.