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Opennote
AcquiredThe notebook that thinks with you.
S25·Summer 2025·Consumer·San Francisco, CA, USA·Team of 3·Founded 2025
About
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.
Founders
Product launches · 1 launch
Opennote is the interactive AI tutor that lives in your notes
Change history · 4 recorded
- August 23, 2026
- Launches refreshed08:01 PM
- YC partner updated08:01 PM
- Founder profile updated08:01 PM
- July 30, 2026
- Status changed to AcquiredActive→Acquired07:00 PM