Research AssistantFree tier available
NotebookLM
Model:
Google's AI-powered research notebook. Upload sources (PDFs, notes, websites) and it answers grounded in your documents, even generating podcast-style audio overviews.
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Strengths
- Answers grounded only in your uploaded sources
- Audio Overview generates podcast-style summaries
- Perfect for studying long documents
- Free with generous limits
Weaknesses
- Less useful for open-ended creative generation
- Requires uploading sources first
- Not designed as a general-purpose chatbot
Best for
Studying documents, lecture notes, and source-grounded research