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The notebook that thinks with you.
Opennote is a notebook with an AI thinking partner built in. Feynman lives in your work: it edits your writing, references your knowledge and the web, runs background tasks, and gives feedback as you work.
Opennote is a note-taking platform with an AI-powered assistant called Galileo that helps users understand and explore material, centralizing notes, lectures, and resources. It offers features like AI chat, recordings, tutorials, and practice tools to assist learning across students, self-learners, and researchers. The product emphasizes proactive explanations, visualizations, and runnable code to facilitate deeper understanding.
Opennote provides a rich note editor, AI chat for questions and explanations, a recorder to capture audio or YouTube links with instant notes, tutorials that generate videos and visual explanations, and practice tools for inline flashcards and quizzes. It reads your current work to offer relevant help, breaks down confusing parts, suggests what to explore next, and keeps you moving. The platform centralizes notes, lecture materials, readings, and other resources in one place and supports knowledge base integrations with features like version history and export options.
Who itβs for: Students, graduate students, researchers, and self-learners who want to consolidate and understand lecture materials, notes, and readings with proactive AI assistance.
Pricing page indicates active product offering with multiple plan tiers; acquired by Reducto to build the future of document intelligence; mentions of education-focused users and reviews imply market traction.
Opennote is the interactive AI tutor that lives in your notes
Opennote embeds an AI tutor inside usersβ notes, analyzing writing in real time to provide Socratic questions, targeted feedback, and visual explanations. It supports solo study and collaborative learning with real-time note sharing and publishing for a community of students, currently used by over 55,000 learners.

Take Notes in the Real World

A shared context layer for you, your team, and your agents.