NotebookLM Update: 1M-Token Chat, Goals, Saved History
Google NotebookLM has had one of the most packed update cycles of any AI tool in recent memory. Since October 2025, the platform has shipped eight major upgrades, including Deep Research, a Gemini 3 engine upgrade, built-in slide editing with PPTX export, Cinematic Video Overviews in March 2026, an AI Pro storage bump to 5 TB in April, and the Google AI Ultra reshuffle at I/O 2026 on May 19. The free plan still exists, but a four-tier pricing structure now separates what each type of user can access. This guide covers every NotebookLM update from October 2025 through May 2026, explains how to use each new feature, and breaks […]
