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Google Upgrades NotebookLM With 1M-Token Context, 6x Memory and Custom Chat Goals

The upgrade turns the document-focused assistant into a more adaptive research partner for long‑form projects.

Overview

  • Google is enabling Gemini’s full 1 million‑token context window in NotebookLM chat across all plans starting today.
  • Capacity for multiturn conversation increases more than sixfold to sustain longer, more coherent research dialogues.
  • NotebookLM now explores sources from multiple angles to synthesize more nuanced, source‑grounded answers.
  • Users can set chat goals to define roles, voices or objectives for the assistant, and the feature is live for everyone.
  • Conversation history will auto‑save with deletion controls and per‑user visibility in shared notebooks over the next week, and Google reports a 50% lift in user satisfaction in testing of the backend upgrades.