kitio.aiPDF.ai vs DeepPDF
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. PDF.ai starts at See pricing page and DeepPDF starts at See pricing page. Check both pricing pages for current plans.
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 PDF
- Bilingual side-by-side translation
- PDF summaries
- Formula and image explanations
- PDF format converters
- PDF to video
| Feature | PDF.ai | DeepPDF |
|---|---|---|
| Best for | Chat with any PDF and get answers linked to the source page | Chat with PDFs, summarize them and translate them side by side |
| Category | Productivity | Productivity |
| Pricing model | Freemium | Freemium |
| Starting price | See pricing page | See pricing page |
| Free plan | Yes | Yes |
| Made by | PDF.ai | DeepPDF |
| Based in | – | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
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Pricing compared
PDF.ai starts at See pricing page and DeepPDF starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
2 plans
Free
Free
- 10 PDFs
- 5 MB per PDF
- Limited AI use
Pro
Free during beta
- 200 PDFs
- 50 MB per PDF
- Unlimited AI use
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
DeepPDF
- Side-by-side translation in 100+ languages
- Explains formulas and figures in papers
- Pro tier currently free during beta
- Free plan limited to 10 PDFs of 5 MB
- Long-term pricing is not yet published
- Converter tools feel like a separate add-on
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 DeepPDF if you want:
- Side-by-side translation in 100+ languages
- Explains formulas and figures in papers
- Pro tier currently free during beta
Watch out: free plan limited to 10 pdfs of 5 mb.
PDF.ai vs DeepPDF FAQ
What is the difference between PDF.ai and DeepPDF?
PDF.ai: Chat with any PDF and get answers linked to the source page. DeepPDF: Chat with PDFs, summarize them and translate them side by side. Both are productivity tools.
Is PDF.ai or DeepPDF cheaper?
PDF.ai starts at See pricing page and DeepPDF starts at See pricing page. Check both pricing pages for current plans.
Do PDF.ai and DeepPDF have free plans?
PDF.ai: Yes. DeepPDF: Yes.
Who makes PDF.ai?
PDF.ai is made by PDF.ai.
Who makes DeepPDF?
DeepPDF is made by DeepPDF.
Which should I choose, PDF.ai or DeepPDF?
Choose PDF.ai if you value clear source links and simple interface. Choose DeepPDF if you value side-by-side translation in 100+ languages and explains formulas and figures in papers.