GPTZero vs ScribeLens
GPTZero
gptzero.meScribeLens
scribelensai.comSide by side
| Figure | GPTZero | ScribeLens |
|---|---|---|
| Price from | $8.33/mo | $0.04/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 4 | 6 |
| Spec score · AI Detection Software | 9.0 (#5) | 8.7 (#10) |
| Spec score · AI Content Detection Software | 8.9 (#9) | 8.6 (#15) |
| Integrations | GPTZero lists Google Classroom and Canvas LMS integrations, an API for developers, and a Zapier integration. | The maker describes LMS, CMS, editorial-review, and internal automation integrations through the API. |
| Intended users | GPTZero describes its audiences as educators and students, as well as publishers, recruiters, copywriters, marketers, and businesses. | The maker describes the product for students, educators, researchers, academics, journal editors, LLM reviewers, prompt engineers, content reviewers, and technical writers. |
| 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. | Scanned analysis is kept in the browser session and cleared when the tab closes; a server-side copy is stored only when the user creates a verification link. |
| Purpose | GPTZero identifies AI-generated text and highlights AI use at document, sentence, and word level. | ScribeLens analyzes writing for AI-like patterns and presents sentence-level evidence with an overall interpretation and exportable report. |
| Support | The site directs users to its Support Center and customer service team for help. | Support and institutional-access questions are directed to [email protected]. |
| What it does | GPTZero detects likely AI-generated writing and identifies AI use at document, sentence, and word level. | ScribeLens analyzes writing for AI-like patterns and returns an overall interpretation plus sentence-level evidence and reports. |
Plans
GPTZero
- FreeFree
- Essential$8.33 a month
- Premium$12.99 a month
- Professional$24.99 a month
ScribeLens
- FreeFree
- Pro$9 a month
- API$0.04 a month
- FreeFree
- API$0.04, paid once
- Pro$9 a month
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.
ScribeLens
ScribeLens analyzes writing for patterns associated with AI-generated text and explains its findings at sentence level. Each sentence receives a human-like, mixed, or AI-like classification, while flagged sentences include keywords describing the detected pattern. Users can paste text or upload PDF, DOCX, TXT, or Markdown files; extraction occurs in the browser. A scan handles up to 40,000 words. Guest checks work without an account, allowing 2,000 words per scan and 3,500 words daily. For academic documents, reference lists, citations, DOI and ISSN lines, publisher boilerplate, and declaration sections are excluded from scoring and displayed in reports. Reports export to PDF or DOCX. Verification links point to stored copies that expire after 180 days; otherwise, analysis remains in the browser session and clears when the tab closes. ScribeLens offers web and API access, with API keys required server-side. Its detection is probabilistic, does not identify a model or check plagiarism, and is not standalone proof. The Free plan is free with 35,000 monthly tokens and seven PDF exports; Pro is $9 a month, launching soon.