Acquisition
May 2026Opennote was acquired by Reducto; the company said it would sunset its standalone educational AI offerings in the coming months and move the team into Reducto.
SourceCompany research
Public company, workplace, funding, and market signals
Updated Jul 29, 2026
Overview
Opennote is an AI-powered learning notebook/workspace that centralizes notes, lecture materials, readings, and study workflows, then uses an embedded AI tutor to explain concepts, generate quizzes, flashcards, videos, and diagrams. Founded in 2025 by three student founders, it raised roughly $4.65M before being acquired by Reducto in May 2026.
Primary product
AI-powered learning notebook with an embedded tutor (Galileo/Feynman) for note consolidation, explanations, quizzes, flashcards, videos, and diagrams.
Founded
2025
Headquarters
San Francisco, California, United States
Team size
10-20
Work style
Flexible
Industry
Software Development
Sub-industry
AI-powered edtech / learning workspace