ChatPDF vs NotebookLM
Which tool to choose in 2026?
Recherche / Education📊 Comparison radar
ChatPDF
NotebookLM
Understand our rating system →
📋 General information
ChatPDF
Rating
★★★★☆ 3.5/5
Pricing
Freemium
Price detail
Free (2 PDFs/day, 120 pages) · More: $19.99/mo
Company
ChatPDF
Launched
2023
Platforms
web, API
NotebookLM
Rating
★★★★☆ 4.4/5
Pricing
Freemium
Price detail
Free (100 notebooks) · Plus: $20/mo · Ultra: $250/mo (via Google One AI Premium)
Company
Google
Launched
2023
Platforms
web, ios, android
✨ Features
| Feature | ChatPDF | NotebookLM |
|---|---|---|
| Chat with PDFs (GPT-4o) | ✅ | — |
| Precise page citations | ✅ | — |
| Multi-document support | ✅ | — |
| Multi-language | ✅ | — |
| Auto-deletion of files (7 days) | ✅ | — |
| Backend API available | ✅ | — |
| Source-grounded AI with verifiable citations | — | ✅ |
| Audio Overviews (AI-generated podcast conversations) | — | ✅ |
| Video Overviews & Deep Research | — | ✅ |
| 1M token context window (Gemini 3) | — | ✅ |
| Multi-format sources: PDF, web, YouTube, audio | — | ✅ |
| Briefing documents & structured FAQs | — | ✅ |
| 1M token context window (Gemini) | — | ✅ |
| 600 sources per notebook (Ultra) — 50 (free) | — | ✅ |
⚖️ Pros & Cons
📑 ChatPDF
- Based in Berlin (EU) — privacy-focused with full GDPR compliance
- Auto-deletion of files after 7 days — your documents do not linger on servers
- Completely simple and intuitive interface — zero learning curve for anyone
- Accurate AI answers with precise page citations — you can verify every response
- Backend API available for developers wanting to integrate PDF chat into their apps
- PDF only — no Word, Excel or other document formats supported
- Pricing increased significantly to ~$20/mo — expensive for a single-purpose tool
- Very small bootstrapped company with 2-10 employees — uncertain longevity and limited support
📔 NotebookLM
- Source-grounded responses with verifiable citations — you can check every claim against the original document
- Unique Audio and Video Overview features that no competitor offers — turns research into podcast conversations
- Massive 1M token context window handles book-length documents easily
- Generous free tier with 100 notebooks — enough for most individual users
- Highly rated on mobile with strong user satisfaction
- No public API — consumer product only, impossible to integrate into professional workflows
- Google-only ecosystem with no third-party integrations — locked into Google's world
- Limited to 50 sources per notebook and no real-time collaboration — not built for large team projects
🏆 Verdict
📑 Choose ChatPDF
The simplest tool to chat with your PDFs, EU-hosted with auto-deletion. Ideal for privacy, but pricing has increased.
📔 Choose NotebookLM
Google's standout AI product — source-grounded responses with unique Audio Overviews that no competitor matches. The free tier is remarkably generous.
ChatPDF
NotebookLM