kitio.aiPDF.ai vs AI PDF Reader
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. AI PDF Reader is completely free, while PDF.ai is freemium.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- PDF chat
- Source highlighting
- Summaries
- Chrome extension
- API
- Chat with documents
- Section summaries
- Translation of answers
- Multiple file formats
- No sign-up
| Feature | PDF.ai | AI PDF Reader |
|---|---|---|
| Best for | Chat with any PDF and get answers linked to the source page | Free browser tool to summarise, translate and question PDF files |
| Category | Productivity | Productivity |
| Pricing model | Freemium | Free |
| Starting price | See pricing page | Free |
| Free plan | Yes | Yes, fully free |
| Made by | PDF.ai | AI PDF Reader |
| Based in | – | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
AI PDF Reader is completely free, while PDF.ai is freemium.
Free plan
Cheapest paid plan
Top plan
Free trial
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
PDF.ai
- Clear source links
- Simple interface
- API for developers
- Free plan has tight limits
- Few collaboration tools
AI PDF Reader
- Free with no account
- Original PDF stays on screen
- Handles EPUB and slides too
- No saved history or workspace
- File size limits not stated
- Little information about who runs it
Which one should you choose?
Choose PDF.ai if you want:
- Clear source links
- Simple interface
- API for developers
Watch out: free plan has tight limits.
Choose AI PDF Reader if you want:
- Free with no account
- Original PDF stays on screen
- Handles EPUB and slides too
Watch out: no saved history or workspace.
PDF.ai vs AI PDF Reader FAQ
What is the difference between PDF.ai and AI PDF Reader?
PDF.ai: Chat with any PDF and get answers linked to the source page. AI PDF Reader: Free browser tool to summarise, translate and question PDF files. Both are productivity tools.
Is PDF.ai or AI PDF Reader cheaper?
AI PDF Reader is completely free, while PDF.ai is freemium.
Do PDF.ai and AI PDF Reader have free plans?
PDF.ai: Yes. AI PDF Reader: Yes, fully free.
Who makes PDF.ai?
PDF.ai is made by PDF.ai.
Who makes AI PDF Reader?
AI PDF Reader is made by AI PDF Reader.
Which should I choose, PDF.ai or AI PDF Reader?
Choose PDF.ai if you value clear source links and simple interface. Choose AI PDF Reader if you value free with no account and original pdf stays on screen.