Google NotebookLM Upgraded with Gemini 3.5 and Antigravity Platform Google is turning its experimental NotebookLM app into a more powerful research environment, but the biggest new capabilities are arriving first for paying AI Ultra and enterprise customers.

Early development and Gemini 3.5 shift

Launched in 2023, NotebookLM began as a way to “interact with your notes and sources using AI” and ask questions about existing materials. The tool originally focused on user-provided documents and webpages.

On June 8, 2026, Google began rolling out what The Verge describes as “across the board” updates, migrating NotebookLM to the upgraded Gemini 3.5 model so it can respond with “more accurate and reliable information.” Ars Technica reports that in Google’s internal tests, the new version “beats the old version in all of Google’s ‘core evaluation dimensions’,” including accuracy, multilingual support, and large‑document analysis, averaging “a 65 percent win rate versus the older model.”

From static notes to active research

A major shift is how projects start. Instead of requiring users to import notes or videos, “you can start a research project by just asking NotebookLM questions about a topic,” with the app using Google Search to “help you find relevant sources.” Ars Technica similarly notes “streamlined web source integration,” allowing NotebookLM to find and import materials from the wider web.

Inside Google, product leaders are framing this discovery feature as the standout change. One description highlighted “the new killer NotebookLM feature: easily being able to expand your search beyond your own source files,” plus the ability to create “new output formats: PDFs, DOCX, XLSX, PPTX, charts, etc.,” with the goal of helping users “do better research.”

Antigravity, cloud computers, and formats

Under the hood, each notebook now connects to a “secure cloud computer,” allowing NotebookLM to run on Google’s Antigravity agentic coding platform and “write and run code to help with your research.” Ars Technica adds that Antigravity arrives with “more than 100 software skills” to build workflows that previously required jumping between apps.

On the output side, NotebookLM can now generate PDFs, slides, spreadsheets, data visualizations, images, CSVs, and more, expanding it from a chat-based assistant into a lightweight content studio for research projects.

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