#1 PDF Chat AI
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Source-backed AI Writer for research
Use public sources or your own PDFs and AI Writer drafts your cite-ready text.
AI proposes your next sentence while you type.
Writer in a nutshell
Write faster with intelligent autocomplete or generate complete texts with AI assistance.
Autocomplete as you write
Get smart autocomplete suggestions while typing - the AI understands context and helps you write faster.
Complete texts instantly
Write complete texts at once or get intelligent suggestions as you type - perfect for essays, reports, and research papers.
Generate a full draft in one click
Open the draft modal to pick topic, length, and language—Writer builds the whole text for you.
How the AI Writer works
Upload PDFs or drop a topic and let the writer surface peer-reviewed papers to cite alongside your own notes.
Generate full sections in one go or move sentence by sentence while citations stay aligned.
Use focused commands like "write opposing argument" or "tighten intro", then export to Word or Markdown when it’s ready.
AI Writer FAQ
What is the ChatPDF AI Writer?
It is a long-form writing workspace that plans and drafts essays or research papers while keeping your citations organised.
How do I start a new document?
Open the writer, choose a blank document or import an outline, then add your topic or paste key points to begin composing.
Which sources can I use with the writer?
You can upload PDFs, add web links, or pull from your existing ChatPDF library so every paragraph links back to real references.
Will the writer find new sources for me?
Yes. It searches trusted research databases to recommend relevant papers you can cite alongside the documents you upload.
Does the writer handle citations automatically?
Yes. Citations are inserted as you draft and stay synced when you reorder or edit sections, so numbering never breaks.
Can I control how much text the AI writes?
Switch between full text generation for entire sections or next-sentence mode when you want tighter control over each paragraph.
What export options are available?
Download to Word, Markdown, or copy the formatted output including bibliography directly to your clipboard.
What kind of AI commands are available?
Use quick actions like "write opposing argument", "expand writing", or "change tone" to iterate without leaving the editor.
Does it work in multiple languages?
Absolutely. You can write and chat with your sources in dozens of languages, switching tone or language at any step.
Is there a free version?
You can try the writer on the free plan with daily limits. Upgrading to Plus unlocks longer drafts, collaboration, and higher usage caps.
Is my data secure?
Uploaded files and drafts are stored securely. You control what you share, and you can remove documents from your workspace at any time.
Can I use the writer on mobile devices?
Yes. The interface adapts to tablets and phones so you can review drafts or capture ideas on the go. Some features are only available on desktop.