Observed Signal · Jun 8, 2026 · Technical Release · Source: techcrunch · Impact: 4/5 · Sentiment: Neutral
Google updates NotebookLM with Gemini 3.5, new research features
Google announced an update to its NotebookLM research tool on June 8, 2026, making Gemini 3.5 the default model and adding Antigravity-powered software skills. The update lets users start a chat about a project and have NotebookLM suggest and pull sources (including non-English primary sources) via its research skills and Google Search to build a knowledge base without requiring users to supply documents first. NotebookLM now supports detailed instruction-driven outputs, editable generated results, provenance-style chat steps showing how answers were reached, and exports to multiple formats (images, documents, structured data, Excel/PowerPoint). The features are available to Google AI Ultra users and Workspace business customers with AI Ultra and AI Expanded Access, with wider rollout planned.
A technical release from Google setting Gemini 3.5 as default and expanding NotebookLM's research, provenance and export capabilities affects AI content workflows and enterprise Workspace customers; changes from a major platform have broader implications for productivity, content creation and downstream marketing/AI tooling.
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Key Takeaways & Evidence Grounding
- Google announced an update to NotebookLM on 2026-06-08.
- Gemini 3.5 is now the default model for NotebookLM.
- NotebookLM gained Antigravity-powered software skills to assist research and output generation.
- The tool can suggest and fetch sources via research skills and Google Search to build a knowledge base from chat.
- NotebookLM now supports exports to images (.png, .svg), documents (PDF, .docx, Markdown, text), structured data (.csv, .json), Microsoft Excel and PowerPoint, and shows detailed chat steps for provenance.
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Google NotebookLM Adds New Output Formats, Agentic Chat
Google updated NotebookLM to produce new output formats (charts, structured data, documents, spreadsheets, presentations and AI-generated images) and to improve agentic research and chat workflows. NotebookLM can now generate data visualizations (png, svg), documents (PDF, docx, markdown), structured data (csv, json), Excel (xlsx) and PowerPoint (pptx) files, and images via Nano Banana (png, jpg, gif). The product integrates with the Gemini App for notebook synchronization and is powered by Gemini 3.5 and Google’s Antigravity agent platform. Each notebook now has a dedicated Cloud Computer able to run code and access 100+ software skills to automate research tasks. The expanded outputs and agentic features are initially available to Google AI Ultra and Workspace Business customers with AI Ultra / AI Expanded Access and require a paid subscription.
Google Connects Gemini to NotebookLM
Google’s NotebookLM (part of Google AI) has received a set of product updates — notably prompt-based slide revisions — alongside deeper integration with Gemini. NotebookLM emphasizes sole-sourced answers (responding only from user-provided sources), supports up to 50 sources across formats, and can generate 10+ output types including slide decks, infographics, podcasts, mind maps and data tables. The new prompt-based slide revision workflow turns slide generation into an iterative collaboration loop. NotebookLM integrates with Google Drive and Gemini (Gems auto-sync to notebooks), and community MCP servers exist to connect external models. The author reports NotebookLM has 48 million monthly visits and 120% quarter-over-quarter user growth in Q4 2024. The guide outlines research-to-product workflows and implications for faster marketing content creation and AI prototyping.
Google renames NotebookLM to Gemini Notebook
Google renamed NotebookLM to Gemini Notebook and is expanding its integration across Google services, including the Gemini app and forthcoming access via AI Mode in Google Search. The tool—originally Project Tailwind and used by over 30 million people and more than 600,000 organizations—now makes each notebook a secure container and adds in-notebook code execution and advanced data-analysis capabilities. Those features, previously tied to Google AI Ultra and certain Workspace business plans, will roll out to Google AI Pro subscribers in the coming weeks. Separately, reports (CNBC citing Bloomberg) say the next flagship model, Gemini 3.5 Pro, is delayed by several months and prompted about a 4% drop in Alphabet shares; Google says it is testing Gemini 3.5 Pro and other models with partners but has not confirmed a launch date.
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