# Thesify vs ZeroGPT

Thesify records 116,873 monthly visits with -5.7% month-over-month growth and Freemium pricing. ZeroGPT records 32,864,541 monthly visits with +19.7% growth and Freemium, Paid pricing.

| Metric | [Thesify](https://openaitools.app/tool/thesify) | [ZeroGPT](https://openaitools.app/tool/zerogpt) |
| :--- | :--- | :--- |
| Website URL | https://www.thesify.ai | https://www.zerogpt.com |
| Categories | AI Writing Assistants, AI Writing, AI Research Tool, AI Article Summarizer | AI Content Detector, AI Detector, AI Checker, AI Plagiarism Checker |
| Pricing Model | Freemium | Freemium, Paid |
| Monthly Visits | 116,873 | 32,864,541 |
| MoM Growth Rate | -5.7% | +19.7% |
| Primary Market | United States | United States |
| Direct Visits | 28,260 | 8,220,007 |
| Review Score | 4.2 | 3.8 |
| Saved Count | 1 | 31 |
| Supported Platforms | Website | Website |

## Thesify

Thesify targets the long, uncertain gap between finishing a manuscript and finding out what reviewers think of it. Reviewer reads a PDF or Word draft the way a peer reviewer would, then reports back on argument strength, methodology, evidence, structure and clarity, with each issue graded by severity so authors know what to fix first. Every review also ships with suggestions from an index of 200M+ genuine peer-reviewed articles, a journal matcher, topic and gap suggestions, a paper digest, and an exportable PDF feedback report that can be annotated or filed with a submission.

The second half of the product, Coauthor, is an AI writing workspace where agents search databases, read your uploaded PDFs and edit the document alongside you. Its distinguishing claim is provenance: the workspace tracks which text was human-written and which was AI-generated, and it keeps version history with rollback, supports live co-author collaboration, and compiles LaTeX into export-ready PDFs. Thesify positions itself explicitly against general-purpose chatbots by emphasizing that it does not invent citations, that its cited sources are drawn from a live academic index, and that uploaded documents are never used to train models.

Delivery is fully browser-based with nothing to install, and the team sells to individuals, departments and institutions. Credits are non-expiring, which matters for researchers working in bursts around submission deadlines, and institutional licensing is offered with GDPR and FERPA-aligned deployment.

**Pricing & Plans:** Freemium-style access via a 7-day free trial on Coauthor; Reviewer is paid. One-off review credits cost €14.95 for a single review or €39.95 for three. Reviewer subscriptions run €24.95/month (3 reviews plus AI chat) or €149.95/year, which brings the per-review price to roughly €4.17. Coauthor costs €24.95/month or €149.95/year. All prices in EUR, VAT included; one-time credits never expire.

- **Manuscript pre-submission review:** Upload a draft as PDF or Word and get a full reviewer-style report covering argument, methodology, evidence, structure and clarity, with findings graded by severity.
- **Real-reference suggestions:** Relevant articles are matched from an index of 200M+ peer-reviewed papers, and the platform explicitly avoids fabricating citations that do not exist.
- **Journal recommender:** Get a ranked shortlist of venues matched to your manuscript, with fit, impact factor and selectivity detail to help you choose where to submit.
- **Coauthor AI writing workspace:** Agents search sources, read your PDFs and edit your document, with automatic version history, live co-author collaboration and LaTeX-to-PDF compilation.
- **AI vs human provenance tracking:** Every contribution is attributed so supervisors and co-authors can see exactly which parts of a document were written by a person and which by the AI.

**Strengths:** Feedback arrives in minutes rather than the two to four weeks a human peer editor typically needs; Per-review cost drops to roughly €4.17 on the yearly plan, far below €80–900 for proofreaders and editing agencies; Citation suggestions come from a real academic index, addressing the hallucinated-reference problem of general chatbots; Review credits never expire and there is nothing to install — it runs entirely in the browser

**Limitations:** Reviewer has no free tier and no free trial, so you must pay before you can judge the quality of feedback; The tool is built for theses, dissertations and scientific papers; students needing help with general essays may find the academic rubric overkill; AI feedback cannot replace a subject-matter expert's judgement on novel methodology

[Profile (Markdown)](https://openaitools.app/tool/thesify.md)

## ZeroGPT

ZeroGPT is best known as an AI content detector, but the site has expanded into a full writing and verification toolkit. The core AI/GPT detector lets you paste text or upload a file and returns a highlighted analysis showing which sentences look machine-written, with a percentage gauge and an automatically generated PDF report you can use as documentation.

Around that core sit several companion detectors and writers. The AI image detector and AI video detector extend checking beyond text; the plagiarism checker scans against billions of sources; and the AI humanizer and paraphraser rewrite text into a more natural style. A grammar checker, summarizer, translator, dictionary, word counter, citation generator, and AI email helper round out day-to-day writing tasks. The company says its multi-stage DeepAnalyse model is trained on internet text, educational datasets, and proprietary synthetic AI datasets, covers over 35 LLM families, and reports 98.4% detection accuracy with a false positive rate under 1%.

Access is freemium: the main tools work free in the browser, with MAX and EXPERT subscriptions for heavier use and premium features, and a separate API for organizations that need large-scale integration. ZeroGPT also runs on WhatsApp and Telegram through a bot, letting you chat, detect AI text, summarize, paraphrase, translate, and check grammar without leaving the messaging app.

**Pricing & Plans:** Freemium with paid tiers. Core tools such as the AI detector, summarizer, and grammar checker are usable free in the browser, while MAX and EXPERT subscriptions unlock higher limits and premium features, and API access is sold separately for organizations.

- **AI and ChatGPT detection:** Paste up to 15,000 characters or upload a file and get a highlighted breakdown of which sentences appear AI-written, plus an overall percentage score and a downloadable PDF report.
- **AI image and video detection:** Beyond text, ZeroGPT offers an AI image detector and an AI video detector that performs frame-level analysis to flag generated or manipulated visuals.
- **Plagiarism checking and humanizing:** Compare your text against billions of sources through the plagiarism checker, or rewrite and humanize AI text with the paraphraser and AI humanizer while keeping the original meaning.
- **Writing and productivity tools:** A bundled writing suite covers summarization, grammar and spelling correction, translation across many languages, a dictionary, word and character counting, citation generation, and an AI email writer.
- **API for organizations:** A documented REST API exposes detection, plagiarism, paraphrasing, summarization, grammar, chatbot, and translation endpoints for organizations that need to embed ZeroGPT at scale.

**Strengths:** Free browser access to the core AI detector, summarizer, and grammar checker; Sentence-level highlighting with an overall percentage and exportable PDF reports; Extends beyond text to AI image and video detection, plus plagiarism checking; Broad companion toolkit: humanizer, paraphraser, translator, dictionary, citations, email helper

**Limitations:** AI detectors can produce false positives, so results should be treated as a signal rather than proof; The strongest features sit behind MAX/EXPERT paid tiers and API access is a separate purchase; Character limits apply to the free detection box; No detection tool can guarantee correctness across every model and language

[Profile (Markdown)](https://openaitools.app/tool/zerogpt.md)

## Frequently Asked Questions

### How do Thesify and ZeroGPT compare in monthly traffic?

Thesify has 116,873 monthly visits, while ZeroGPT has 32,864,541. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Thesify has a month-over-month growth rate of -5.7%; ZeroGPT has +19.7%.

### How does pricing compare?

Thesify: Freemium. Freemium-style access via a 7-day free trial on Coauthor; Reviewer is paid. One-off review credits cost €14.95 for a single review or €39.95 for three. Reviewer subscriptions run €24.95/month (3 reviews plus AI chat) or €149.95/year, which brings the per-review price to roughly €4.17. Coauthor costs €24.95/month or €149.95/year. All prices in EUR, VAT included; one-time credits never expire. ZeroGPT: Freemium, Paid. Freemium with paid tiers. Core tools such as the AI detector, summarizer, and grammar checker are usable free in the browser, while MAX and EXPERT subscriptions unlock higher limits and premium features, and API access is sold separately for organizations.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Grammarly](https://openaitools.app/tool/grammarly) | 58,867,412 | -1.5% | Freemium | Cross-platform writing assistant focused on real-time grammar and tone correction rather than AI content detection. | [.md](https://openaitools.app/tool/grammarly.md) |
| 2 | [QuillBot Paraphraser](https://openaitools.app/tool/quillbot-paraphraser) | 36,630,337 | +2.3% | Freemium | Popular paraphrasing assistant focused on rewriting and grammar correction, but lacks dedicated AI detection scanners. | [.md](https://openaitools.app/tool/quillbot-paraphraser.md) |
| 3 | [GPTZero](https://openaitools.app/tool/gptzero-me) | 23,246,989 | +32.5% | Freemium, Paid | Industry-standard AI content detection trusted by educators, offering robust sentence-level analysis similar to ZeroGPT. | [.md](https://openaitools.app/tool/gptzero-me.md) |
| 4 | [Scribbr](https://openaitools.app/tool/scribbr) | 7,530,803 | +14.6% | Freemium | Academic editing platform pairing AI plagiarism detection with professional human proofreaders for student papers. | [.md](https://openaitools.app/tool/scribbr.md) |
| 5 | [SciSpace](https://openaitools.app/tool/scispace) | 4,464,111 | +8.6% | Freemium | AI research platform for reading, understanding and writing scientific papers | [.md](https://openaitools.app/tool/scispace.md) |
| 6 | [Undetectable AI](https://openaitools.app/tool/undetectable-ai) | 3,113,403 | +17.5% | Freemium | Combines reliable AI detection with advanced text humanization tools to rewrite machine-generated content naturally. | [.md](https://openaitools.app/tool/undetectable-ai.md) |
| 7 | [Copyleaks](https://openaitools.app/tool/copyleaks) | 2,402,494 | -14.1% | Paid, Contact for Pricing | Enterprise-grade content verification suite detecting AI text, images, and source code across multiple languages. | [.md](https://openaitools.app/tool/copyleaks.md) |
| 8 | [Originality.ai](https://openaitools.app/tool/originality) | 2,049,639 | +2.8% | Paid | Comprehensive content integrity platform specialized in accurate AI detection and plagiarism checking for digital publishers. | [.md](https://openaitools.app/tool/originality.md) |
| 9 | [ProWritingAid](https://openaitools.app/tool/prowritingaid-com) | 1,623,266 | +17.6% | Freemium, Paid | A storytelling toolkit that checks your grammar and coaches your craft | [.md](https://openaitools.app/tool/prowritingaid-com.md) |
| 10 | [Jenni](https://openaitools.app/tool/jenni) | 1,498,133 | +5.2% | Freemium | The AI workspace where researchers read, write, and cite with every claim traceable to its source | [.md](https://openaitools.app/tool/jenni.md) |

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Source: https://openaitools.app/compare/thesify-vs-zerogpt

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