Google Expands NotebookLM AI Assistant with 1 Million Token Context Window and Customizable Personas

Nov 02, 2025
Digital Trends
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Summary

Google dramatically expands NotebookLM AI assistant with massive 1 million token context window, 6x longer conversational memory, 50% better response quality, and customizable personas that can act as specialized roles like PhD advisor or marketing strategist.

Key Points

  • Google releases major update to NotebookLM expanding its context window to 1 million tokens and providing 6 times longer conversational memory with 50% better response quality
  • The AI research assistant now allows users to customize chat goals and personas, enabling it to act as specific roles like PhD advisor, marketing strategist, or game master
  • Enhanced capabilities allow NotebookLM to handle larger document sets while maintaining coherent responses and remembering longer conversations for improved research and editing workflows

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