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Startups14,448Programs29

14,448 startups · 29 programs

Opennote

Acquired · The notebook that thinks with you.

WebsiteYC profile

Why it ranks

How the rank works
11signal of 100 · rising 8
  • acquiredOutcome · YC, program pages, Acquisitions+4
  • went through YCProgram · this site+4
  • team of 3Team size · YC's directory+3.1

A sum of public facts, not a judgement and not investment advice.

Competitors

OtherAcquiredCloverShared: productivity, notebook, thinkingYC S20NYStartup →
Companies closest to Opennote
Company
CloverShared: productivity, notebook, thinkingYC S20AcquiredOther

Adjacent

Developer toolsMergentShared: background taskYC S21AustinStartup →AIInactiveTailor-EDShared: ai-enhanced learning, productivity, educationYC W19Tel Aviv-YafoStartup →DataInactiveLivedocsShared: productivity, notebookYC W22San FranciscoStartup →AIPlatziShared: ai-enhanced learning, education, knowledgeYC W15San FranciscoStartup →AISimCareShared: ai-enhanced learning, education, feedbackYC S24New York CityStartup →
Companies next to Opennote
Company
MergentShared: background taskYC S21ActiveDevtools
Tailor-EDShared: ai-enhanced learning, productivity, educationYC W19InactiveAI
LivedocsShared: productivity, notebookYC W22InactiveData
PlatziShared: ai-enhanced learning, education, knowledgeYC W15 +1ActiveAI
SimCareShared: ai-enhanced learning, education, feedbackYC S24ActiveAI

Also from S25 in AI

All of S25
AIFrizzleAI Grading for TeachersYC S25New York CityStartup →AIPallyYour personal AI AssistantYC S25San FranciscoStartup →AIBlueAI rebuilt coding. We’re rebuilding the phoneYC S25San FranciscoStartup →AICharThe AI notepad that knows and works for youYC S25SeoulStartup →AIDoeThe boring stuff, handled. Everything else, supercharged.YC S25San FranciscoStartup →AIEpicenterChatGPT's memory feature in an open, portable formatYC S25San FranciscoStartup →
Company
FrizzleAI Grading for Teachersteam of 2ActiveAI
PallyYour personal AI Assistantteam of 2ActiveAI, Data
BlueAI rebuilt coding. We’re rebuilding the phoneteam of 7hiringActiveAI
CharThe AI notepad that knows and works for youteam of 3ActiveAI, Devtools
DoeThe boring stuff, handled. Everything else, supercharged.team of 2ActiveAI, Data
EpicenterChatGPT's memory feature in an open, portable formatActiveAI, Devtools

Founders

  • Rishi SrihariFounder
  • Abhi AryaFounder/CTO
  • Vedant VyasFounder

About Opennote

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.

YC batch
S25 · Summer 2025
Status, per YC
Acquired
Category
AI
Team size
3
Location
San Francisco, CA, USA
Founded
2025
Checked
7h ago

YC tags: AI-Enhanced Learning, Education, SaaS, Consumer, Productivity

Opennote in S25: 166 companies, 92% AI

GitHub LinkedIn

Opennote: questions

Which YC batch was Opennote in?

Opennote was in Y Combinator's Summer 2025 batch (S25).

Is Opennote still active?

Y Combinator lists Opennote as acquired.

Who founded Opennote?

Opennote's founders, as listed on its YC page: Rishi Srihari (Founder), Abhi Arya (Founder/CTO), Vedant Vyas (Founder).

Where is Opennote based?

Opennote lists San Francisco, CA, USA as its location on YC's directory.