Google renamed 📝NotebookLM to Gemini Notebook on July 16, 2026, announcing in a blog post: "We're renaming NotebookLM to Gemini Notebook." Google's help center describes Gemini Notebook, formerly NotebookLM, as "an AI-powered research assistant designed to help you refine and organize your ideas." 📝MythOS describes itself as a networked knowledge platform where every idea, person, project and decision lives as a linked memo in a library you own. They split on what the AI works from: Gemini Notebook answers from sources a user uploads, while MythOS hands the user's own library of memos to chat and to AI agents over 📝MCP.
At a Glance
Sources and Grounding
Google's help center says Gemini Notebook "is designed to answer questions based on the information provided in your uploaded sources." Chat returns "grounded information based on your sources with clear in-line citations," and the tool turns sources into "study guides, briefings, audio overviews, mind maps, and more." In MythOS the material is the library itself. Typing @ draws a mention to another memo, and every mention becomes a 📝backlink that the Graph maps without manual upkeep. 📝Semantic Search finds memos by meaning through 📝vector embeddings and hybrid scoring, and chat with a library runs the same retrieval through its 📝RAG pipeline.
Sharing and Publishing
Google's help center says "You can make your notebook public and share a link with anyone with a Google account," and that "Only notebook owners and editors can generate a public share link to a notebook and manage its public access." Google's plans page states: "Advanced sharing available to paid users." In MythOS every memo carries its own visibility, public, unlisted, hidden or private, so private reflection and public writing live in the same library. MythOS's Plans & Tiers memo places public memos, collaborators and agent access at Scholar and above.
AI and Agents
Google's announcement says it is giving "every notebook a secure cloud computer," which "allows Gemini Notebook to write and execute code natively" for "complex data analysis grounded in your sources." Google said in July that it was "available today for Google AI Ultra users," with Pro users to follow. The post adds that notebooks can already be created inside the Gemini app. The help center states: "Your data is protected, and is not used to train Gemini Notebook unless you provide feedback." MythOS exposes a library to any MCP client through one endpoint, mythos.one/api/mcp; a connected client gets 60 tools and loads four identity memos (Soul, Style, Human and Memory) before it writes. Chat inside MythOS runs on six model providers, on a MythOS-funded balance or the user's own key through 📝BYOK.
Who Each Is For
Google's announcement calls Gemini Notebook a standalone product "focused on being your premier research tool" and says "more than 30 million people and over 600,000 organizations are using it." Its help center says it "is available in browser to all users above the age of consent."
MythOS's own overview says one library serves "private thinking, team collaboration, public writing, and the AI tools you work with." Its Plans & Tiers memo states that "writing is never the thing you pay for."
Related
- 📝NotebookLM — reference memo on Google's research tool, now Gemini Notebook
- 📝MemPalace vs Obsidian vs MythOS as Claude Memory — the hub comparing MythOS with other memory systems
- 📝MythOS vs Logseq — MythOS compared with an open-source outliner
- 📝MythOS MCP — connecting a library to Claude, Cursor and any MCP client