What Opennote does

Opennote, Inc. was a Delaware-incorporated, San Francisco-headquartered edtech startup that built an AI-native learning platform for undergraduate and graduate students, founded in 2025 by a three-person student team (Rishi, Abhi, and Vedant) and acquired by Reducto in May 2026. The product unified a rich notes editor, an AI thinking partner (Galileo / Galileo-2), an agentic deep-research tutor (DeepTutor), a Recorder for audio and YouTube transcripts, automated Tutorials (videos, diagrams, runnable code), inline Practice tools (flashcards, quizzes), and a Community surface, all orchestrated through a proprietary chat markup language called Opennote XML (OXML) and a custom hybrid search/retrieval system called Index built on Postgres/pgvector, Cloudflare Workers, R2, Workers AI, and PlanetScale Metal.

The underlying technology stack is differentiated by applied engineering rather than by proprietary foundation models: DeepTutor chains fine-tuned open-source models served through Groq to synthesize 10-15 sources into expert-level responses in approximately 20 seconds, while Index achieves sub-300ms P99 query latency at 10,000-document scale and matches ChromaDB retrieval quality on the MSMARCO benchmark. Opennote was SOC II-aligned via Vanta and self-attested to GDPR, CCPA, FERPA, COPPA, and SOPIPA compliance, with an explicit no-training-on-user-data policy and a public trust portal at trust.opennote.com.

The company ran a freemium consumer SaaS model with three published tiers — Free ($0/mo), Explorer ($15/mo), and Scholar ($25/mo) — plus a 20% education discount for verified education emails, an optional 30%-commission affiliate program, and nominally available institutional/site licensing for schools and districts. Distribution was product-led and community-led, with a Campus Ambassador program, on-campus events (e.g., the Waterloo Venture Group Build Sprint), conference presence (ASU+GSV AI Show 2025), and organic reach that grew to 50,000+ users across 110+ countries. Opennote raised an $850K USD pre-seed round led by Afore Capital in April 2025, was admitted to Y Combinator's Summer 2025 batch, and reached $3.3M USD in cumulative disclosed funding before being acquired by Reducto on May 6, 2026, with the standalone product scheduled to shut down on July 1, 2026.

Name

Opennote

Legal name

Opennote, Inc.

Website

https://opennote.com

Company type

Private

Founded year

2025

Operating status

Acquired

Headcount range

1–10 employees

Short description

Opennote built an AI-native learning platform for undergraduate and graduate students, combining a notes editor, an educational inference engine (Galileo), an agentic deep-research tutor (DeepTutor), and a proprietary hybrid search system (Index) under a freemium SaaS model; founded in 2025 and acquired by Reducto in May 2026.

Ownership category

akta.pro rank

Headquarters

HQ city

San Francisco

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Software

Cost components

Personnel, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Subscription (Freemium SaaS): Tiered monthly subscription with a free tier ($0/mo), Explorer ($15/mo), and Scholar ($25/mo) plans, available on Monthly or Yearly billing. Includes 20% education discount for verified education emails. Subscription features recurring billing, cancellation, and prorated refunds promised post-acquisition.
2. Freemium / Free tier: Free $0/mo tier acts as a top-of-funnel acquisition mechanism converting users into paid Explorer or Scholar plans.
3. Affiliate referral commissions: Affiliate program pays 30% commission on the first 3 months of every successful referral, generating referral-based acquisition and minor affiliate revenue.
4. Licensed subscriptions (institutional): Institutional/site licenses available for schools and districts, governed by additional contractual terms separate from consumer subscriptions.

Pricing tiers

Go-to-market motion4 records

Marketing channels8 records

Core offering

Opennote is an AI-powered learning platform that combines a rich notes editor, an AI thinking partner (Galileo), a Recorder, Tutorials, Practice tools, and DeepTutor (an agentic deep-research tutor) in a single workspace. It is designed for students to centralize lecture materials, notes, and readings while getting personalized AI explanations, search, and study aids.

Product overview

Opennote is a single, unified AI-powered learning platform (not a platform-plus-separate-product portfolio) that centers on a Notes editor augmented by a stack of named AI modules. The core editor (Notes) is paired with Galileo — Opennote's generative AI thinking partner built on the multi-layer "Opennote XML (OXML)" architecture and shipped in iterative versions (Introducing Galileo, then Galileo-2) — plus the Recorder (audio and YouTube transcripts), Tutorials (text-to-video and diagrams), Practice tools (inline flashcards/quizzes), AI Chat, and DeepTutor (agentic deep-research tutor). Underneath it all sits Index, Opennote's hybrid Postgres/pgvector + Cloudflare Workers search/retrieval system that powers Communities and the knowledge layer; surrounding the core are an Opennote Communities/ambassador program and an Affiliate Program. Following the May 2026 acquisition by Reducto, Opennote's standalone educational offerings are being sunset on July 1, 2026, with the team joining Reducto's document intelligence efforts.

Differentiator

Problem solved

Functional benefit

Brands

• Galileo: Opennote's state-of-the-art AI system for educational inference and multimodal tutoring, supporting text-to-video, graph generation, runnable code, canvas inference, and two-way interaction; launched January 2025 and iterated as Galileo-2 in April 2025.
• DeepTutor

Products and services

• Opennote Platform Unified AI-powered learning and note-taking platform combining a rich notes editor, Galileo (AI thinking partner), Recorder, Tutorials, Practice tools, AI Chat, DeepTutor, and the Index search layer; available in Free, Explorer ($15/mo), and Scholar ($25/mo) tiers. Designed for undergraduate and graduate students to centralize notes, lecture materials, and AI-assisted study.
• Galileo Opennote's state-of-the-art AI system for educational inference, built on a multi-layer 'Opennote XML (OXML)' architecture supporting long-term multimodal inference, text-to-video, graph generation, runnable code in multiple languages, canvas inference, and two-way interaction. Acts as the AI thinking partner within the Opennote platform.
• DeepTutor Agentic deep-research tutor on Opennote that chains fine-tuned open-source models served through Groq to recursively search and synthesize expert-level answers (avg. 20 seconds across 10–15 sources). Available as one free query/day on the Free tier, unlimited on paid plans.
• Opennote Communities Community surface within Opennote where learners post notes, ideas, and projects, join campus events, and become Campus Ambassadors; powered by the Index hybrid search system.
• Opennote Affiliate Program

Quantifiable outcome

• Index achieves sub-300ms P99 search latency at 10K-document scale (cut from 475ms to 209ms after PlanetScale migration)
• +4 more outcomes

Named customers12 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration4 records

AI capability14 records

Feature6 records

Scale indicators8 records

Recent moves7 records

Expansion highlights8 records

Direct peers

• Notion: Notion is an AI-augmented note-taking and workspace platform. Like Opennote, it centralizes notes, documents, and AI chat, and now offers Notion AI for study and writing workflows — overlapping directly with Opennote's core Notes + Galileo surface for students.
• Quizlet: Quizlet is a leading consumer study platform with flashcards, practice tests, and Q-Chat AI tutor. It serves the same undergraduate/student use cases (memorization, practice, retention) as Opennote's Practice tools and Galileo, and is the incumbent Opennote most directly displaces.
• Khan Academy (Khanmigo): Khan Academy's Khanmigo is an AI tutor built for K-12 and early college students. It is the most direct comparable to DeepTutor as a teachable, Socratic-style AI tutor with explicit pedagogical design — a key reference point for educational inference positioning.
• Obsidian: Obsidian is a knowledge-base / note-taking app popular with students and researchers, with a plugin ecosystem (including AI plugins). It competes with Opennote on the "centralized personal knowledge graph" positioning for self-directed learners and researchers.
• Anki: Anki is the dominant spaced-repetition flashcard app used heavily by medical and college students. It overlaps with Opennote's Practice tools and is the default retention/flashcard solution that Opennote's AI-generated flashcards aim to displace.

Emerging players

• Google NotebookLM: NotebookLM is Google's AI notebook that ingests user sources and produces summaries, study guides, and audio overviews. It overlaps with Opennote's Recorder/Notes/Index workflow, with the structural advantage of free distribution from Google and a multimodal audio feature.
• Reflect: Reflect is an AI-native notes app that links daily notes and uses GPT for summarization and synthesis. It targets the same power-user/student/professional segment as Opennote and competes directly on the AI-augmented note-taking surface.
• Studyfetch: Studyfetch is an AI study platform that generates flashcards, quizzes, and notes from uploaded course materials. It directly overlaps with Opennote's Practice tools, Recorder, and Tutor features for the same student persona.
• Elicit: Elicit is an AI research assistant for academic literature reviews and synthesis. It targets the same graduate-student and researcher segment that Opennote's customer segmentation explicitly calls out, with overlapping deep-research agent capabilities.

Broad incumbents

• Perplexity: Perplexity is a broad AI answer engine with deep-research mode and student-tier pricing. Its Pro Deep Research agent overlaps with DeepTutor's recursive search-and-synthesis use case, with vastly larger distribution and funding.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/opennote_me

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds2 records

Investors5 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Opennote