ChatPDF vs PDF.ai

ChatPDF

The quickest way to interrogate one long PDF without building retrieval yourself, and the page-level citations are what keep it honest. But ChatGPT and Claude now read PDFs natively, so ChatPDF only earns its subscription if you need those citations, the multi-file view, or the API.

Pros

• +answers cite specific pages, so you can check them instead of trusting them
• +handles Word, PowerPoint, Markdown and text files, not only PDF
• +REST API supports streaming and multi-turn conversations
• +free tier works with no account and no card

Cons

• −two documents a day on free runs out fast during real research
• −Plus pricing is not published anywhere on the site
• −no team plan, SSO or shared document library
• −hard per-file limit of 2,000 pages or 32 MB

PDF.ai

PDF.ai works well for someone who reads long PDFs and wants quick answers and summaries, and for developers who need a simple REST call to turn PDFs into structured data. Users who only occasionally ask about a short file can stay on the free tier or use a general chatbot; enterprises with strict data-residency needs will find little public information about who runs the service.

Pros

• +Chat with one file or across a whole library of uploads
• +Separate parsing, extraction and splitting API with a free monthly allowance
• +Chrome extension, screenshot-and-ask and embeddable PDF chatbot
• +Annual billing cuts the Pro price from $17 to $10 a month

Cons

• −Free plan is limited to very small files and page counts
• −Team, capture and embed features sit on per-user plans
• −The site names no company, address or team

Is ChatPDF cheaper than PDF.ai?

PDF.ai starts at $10/mo. ChatPDF has a free tier; what its paid plans cost is not confirmed by us yet.

Does ChatPDF or PDF.ai have a free tier?

Both: ChatPDF has a free tier, and PDF.ai has a free tier.

Which has a public API, ChatPDF or PDF.ai?

Both ship a public API, so either can be built on; the fact table above shows the platforms each one runs on.