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Perplexity AI
AI Chatbots & AssistantsAn AI answer engine that cites its sources for trustworthy research.
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AI Research & Study Tools · ★ 4.6
NotebookLM
Google's AI research notebook grounded in your own sources.
NotebookLM by Google lets you upload documents and sources, then ask questions, get summaries and even generate audio overviews — all grounded in your material with citations. It's a powerful study and research companion.
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Key features
What you get with NotebookLM.
✓Grounded in your sources
✓Cited answers
✓Audio overviews
✓Document summaries
✓Free to use
Pros
- Answers based on your docs
- Great audio overviews
- Free
Cons
- Limited to uploaded sources
- Upload size limits
NotebookLM at a glance
| Category | AI Research & Study Tools |
| Pricing model | Free |
| Free plan | Yes |
| Starting price | Free |
| Best for | Studying, Research, Summarising documents |
| Our rating | ★ 4.6 / 5 |
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