# ChatPDF vs Citely

ChatPDF records 1,044,477 monthly visits with -3.7% month-over-month growth and Freemium pricing. Citely records 62,271 monthly visits with -6.1% growth and Freemium pricing.

| Metric | [ChatPDF](https://openaitools.app/tool/chatpdf) | [Citely](https://openaitools.app/tool/citely) |
| :--- | :--- | :--- |
| Website URL | https://www.chatpdf.com | https://citely.ai |
| Categories | AI PDF, AI Chatbot, AI PDF Summarizer, AI Summarizer | AI Essay Writer, AI Paragraph Generator, AI Report Writing, AI Review Generator |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 1,044,477 | 62,271 |
| MoM Growth Rate | -3.7% | -6.1% |
| Primary Market | United States | United States |
| Direct Visits | 457,792 | 9,641 |
| Review Score | 4.2 | 4.2 |
| Saved Count | 279 | 0 |
| Supported Platforms | Website | Website |

## ChatPDF

ChatPDF started as a simple "chat with your PDF" utility and has grown into a full research and study workspace. You can drop in a PDF, Word document, PowerPoint deck, Markdown or text file, paste a link, or point it at a YouTube video, then ask questions in natural language. Answers are grounded in your sources and come with clickable citations so you can verify anything straight from the original page.

Beyond one-off Q&A, the platform supports folders and multi-file chats, so you can query a whole reading list at once and compare findings across documents. A side-by-side layout keeps the conversation and the document open together, while translation lets you read material in another language or ask questions in a language different from the source. The team has expanded the suite with an AI writer, AI detector, flashcards, slide generation, and a dedicated research mode.

Access is browser-based and device-agnostic, with desktop and mobile apps available. The free tier covers a limited number of documents per day with no sign-up required for the core experience, while the paid Plus plan removes limits and unlocks advanced features. Enterprise-grade handling (SSL in transit, encrypted storage, SOC 2 Type II storage provider) is advertised, and users can delete their documents at any time.

**Pricing & Plans:** Freemium. A free tier lets you analyze a limited number of documents per day, and the core chat experience works without creating an account. ChatPDF Plus is a paid subscription that adds unlimited document analysis and advanced features — check the site for current plan details and regional pricing.

- **Cited answers:** Every response is anchored to your source document with clickable citations that scroll to the exact passage, so verification takes seconds instead of page-by-page searching.
- **Multi-file chat and folders:** Organize documents into folders and query many files in a single conversation to compare arguments, cross-reference findings, or study a whole syllabus at once.
- **Summarization and translation:** Condense long papers, reports, and contracts into key takeaways, and translate or query documents in any language — including mixing a source language with a different question language.
- **Study and writing tools:** Generate flashcards and slide decks from your material, and use the built-in AI writer and AI detector for drafting and checking academic text.
- **Side-by-side reading view:** Keep the chat panel and the PDF open together so answers stay linked to the original content while you read along.

**Strengths:** Answers include clickable citations tied to the original page, which makes fact-checking straightforward; Works with PDFs, Word, PowerPoint, Markdown, text, YouTube links, and web pages in one place; No account needed to try the core chat experience, and the free tier covers light daily use; Multilingual: upload in one language and ask questions in another

**Limitations:** The free plan caps how many documents you can analyze each day; Advanced features such as unlimited analysis and the full study toolkit sit behind the paid Plus subscription; Very large documents or heavy multi-file sessions can be slower and may hit size limits

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

## Citely

Unlike a plain text generator, Citely is positioned as a verification layer for academic work. The core workflow is simple: paste a reference list, and Citely resolves each entry against scholarly databases, returning a status for every citation. Entries with DOIs that do not resolve, author-year combinations that do not match the record, or venues that do not exist are surfaced clearly, which is exactly the failure mode produced when a language model invents plausible-looking references.

The second half of the product works in the opposite direction. The AI Source Finder takes a claim or a paragraph and searches the same indexes for genuine papers that support it, returning citations with verified metadata. For students writing essays, thesis candidates assembling literature reviews, and editors screening submissions, that combination covers both sides of the problem: proving that a source is real, and finding a real source to support a point.

Citely is a browser-based tool with paid tiers that meter usage in credits. A one-off trial plan unlocks a single verification run, monthly and yearly subscriptions grant a recurring credit allowance plus citation export, and a multi-year "Believer" tier is aimed at long-running research projects. Character ceilings differ between the Source Finder and the reference checker, so the size of a reference list affects how many credits a run consumes.

**Pricing & Plans:** Citely uses a credit-based model with four published tiers: a $9 one-time trial, $19/month billed monthly, $14/month billed yearly, and a $347 one-time three-year Believer plan. Higher tiers raise the credit allowance, extend the character limit for reference verification from 2,000 to 4,000 characters, and add citation export in APA, MLA, and Chicago. Enterprise and larger credit bundles are available on request.

- **AI Source Finder:** Paste a claim or paragraph and Citely returns matching academic papers with verified metadata, ready to cite in APA, MLA, or Chicago style.
- **Citation & Reference Checker:** Submit a reference list and Citely tests each entry against scholarly databases, marking entries that cannot be confirmed or that point to the wrong work.
- **AI Hallucination Detection:** Citely targets the specific errors AI models make when inventing references, including chimera citations, invented DOIs, and citations that drift across years.
- **Multi-Database Verification:** Checks run against CrossRef, PubMed, arXiv, and OpenAlex, so verification reflects real indexed scholarship rather than a single narrow database.
- **Citation Export:** Export verified references in common academic styles so they drop straight into a manuscript or reference manager.

**Strengths:** Verifies references against multiple real academic indexes instead of trusting a single source; Directly targets AI-written citation hallucinations such as invented DOIs and chimera citations; Doubles as a source finder when you have a claim but no reference for it; Exports citations in standard academic styles

**Limitations:** Credit-based billing means heavy reference lists can consume an allowance quickly; Character limits apply per Source Finder (300) and Verify References (2,000) run; Advanced source verification, citation export, and higher character ceilings sit behind paid plans; No native Zotero/Mendeley sync shown on the public site, so library workflows stay partly manual

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

## Frequently Asked Questions

### How do ChatPDF and Citely compare in monthly traffic?

ChatPDF has 1,044,477 monthly visits, while Citely has 62,271. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

ChatPDF has a month-over-month growth rate of -3.7%; Citely has -6.1%.

### How does pricing compare?

ChatPDF: Freemium. Freemium. A free tier lets you analyze a limited number of documents per day, and the core chat experience works without creating an account. ChatPDF Plus is a paid subscription that adds unlimited document analysis and advanced features — check the site for current plan details and regional pricing. Citely: Freemium. Citely uses a credit-based model with four published tiers: a $9 one-time trial, $19/month billed monthly, $14/month billed yearly, and a $347 one-time three-year Believer plan. Higher tiers raise the credit allowance, extend the character limit for reference verification from 2,000 to 4,000 characters, and add citation export in APA, MLA, and Chicago. Enterprise and larger credit bundles are available on request.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Claude](https://openaitools.app/tool/claude-2) | 1,253,439,413 | +23.8% | Freemium | Anthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing. | [.md](https://openaitools.app/tool/claude-2.md) |
| 2 | [Scribbr](https://openaitools.app/tool/scribbr) | 7,530,803 | +14.6% | Freemium | Academic proofreading, plagiarism checking and AI-powered writing tools in one place | [.md](https://openaitools.app/tool/scribbr.md) |
| 3 | [PDFgear](https://openaitools.app/tool/pdfgear) | 2,845,280 | -3.4% | Free | Completely free PDF reading and editing tool with AI assistant, though basic compared to dedicated platforms. | [.md](https://openaitools.app/tool/pdfgear.md) |
| 4 | [LightPDF](https://openaitools.app/tool/lightpdf-com) | 1,742,568 | -15.3% | Freemium | Free AI-powered PDF editor, converter and reader for every device | [.md](https://openaitools.app/tool/lightpdf-com.md) |
| 5 | [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) |
| 6 | [UPDF AI](https://openaitools.app/tool/updf-ai) | 1,050,387 | -7.2% | Freemium, Free Trial, Paid | Combines full desktop PDF editing software with AI chat, but requires software installation for full features. | [.md](https://openaitools.app/tool/updf-ai.md) |
| 7 | [Scite](https://openaitools.app/tool/scite) | 841,974 | +1.1% | Free Trial, Contact for Pricing | AI answers grounded in 300M+ scholarly full texts | [.md](https://openaitools.app/tool/scite.md) |
| 8 | [PDF.ai](https://openaitools.app/tool/pdf-ai) | 387,819 | -5.5% | Freemium, Free Trial | Includes robust developer APIs for custom document workflows, but free tier limits document page counts. | [.md](https://openaitools.app/tool/pdf-ai.md) |
| 9 | [Aithor](https://openaitools.app/tool/aithor) | 345,936 | +11.8% | Freemium | AI academic writer with real sources and automatic citations | [.md](https://openaitools.app/tool/aithor.md) |
| 10 | [ThesisAI](https://openaitools.app/tool/thesisai) | 224,434 | +18.3% | Paid | One prompt, fully cited academic drafts from your own sources | [.md](https://openaitools.app/tool/thesisai.md) |

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Source: https://openaitools.app/compare/chatpdf-vs-citely

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