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NotebookLM: Research & Search AI tool

Google's AI research notebook grounded in your own sources.

Pricing: Free; higher limits on paid Google plans (check the site for current pricing)

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Other Research & Search tools

Perplexity

AI answer engine that cites its web sources.

Research & Search · Free tier; Pro plan
Elicit

AI research assistant for searching and summarizing academic papers.

Research & Search · Free tier; paid plans
Consensus

AI search engine for findings in scientific research.

Research & Search · Free tier; paid plans
Gemini

Google's AI assistant across search, Gmail and Docs.

Research & Search · Free tier; paid plans