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LearnBookAI Knowledge OS
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    AI Platform for Knowledge Acquisition & Mastery

    Turn Reading into Verifiable Learning

    Beyond summary, towards mastery. Seamlessly connect AI Interactive Reader, Personal Knowledge OS, AI Courseware Generator, and Social Learning.

    Open toolsTry AI Tutor
    99.8%
    Comprehension Boost
    500K+
    Lifelong Learners
    10M+
    Knowledge Cards
    Core Technology

    Parsing, RAG, Retention, Output — The Full AI Learning Engine

    Integrating high-fidelity academic parsing, semantic search, spaced repetition cards, and Socratic guiding to close the study loop.

    N
    01
    Technology / Model

    Academic Parsing (Nougat)

    High-fidelity academic parserFormulas & tables
    R
    02
    Technology / Model

    Semantic Search (RAG)

    Long-context Q&AFull-book context
    G
    03
    Technology / Model

    Auto Bidirectional Links

    Second Brain builderInterlinked nodes
    E
    04
    Technology / Model

    Multi-dimensional ELI5

    Concept simplificationELI5 & Analogy
    05
    Core Capability

    Spaced Repetition Cards

    Active recall retentionAnti-forgetting
    06
    Core Capability

    Socratic Inquiries

    Socratic dialogueUnderstand validation
    07
    Core Capability

    Outline & Slide Generation

    One-click course builderMarkdown & Slides
    08
    Core Capability

    24/7 AI Tutors

    Custom digital companionInteractive avatars
    The Study Loop

    How LearnBook Powers Your Learning Flow

    See how AI orchestrates the entire journey from importing raw files and understanding concepts to active recall and structured knowledge output.

    1Import & Parse
    Session: c23104cd|
    RUNNING

    Stage

    Parsing

    Current Output

    Academic PDF Ingestion

    Learning Metric

    Nougat Engine

    learnbook-parser-session.sh
    OCR Engine Connected
    Parser Processes
    [13:54:01] INIT upload PDF
    [13:54:02] OK layout OCR parsed
    [13:54:04] RAG build vector index
    [13:54:06] PLAN concept map layout
    [13:54:08] DONE context sync ready
    user@learnbook:~$

    Product Ecosystem

    AI-Native Tools for High-Performance Learning

    Each tool is meticulously designed to power a specific step of your knowledge internalization and output journey.

    Explore All Tools
    Bookshelf

    Bookshelf

    Compile any materials into structured interactive books with Socratic coaching, active recall quizzes, and FSRS memory cards.

    AI BookSocratic TutorActive Recall
    Enter Tool
    Translator

    Translator

    Translate notes, prompts, articles, and study material with streaming AI translation.

    StreamingBilingualStudy notes
    Enter Tool
    Use Cases

    Accompanying Every Deep Learning Journey

    See how learners across different domains utilize LearnBook to internalize and output knowledge.

    Scientific & Academic Research

    Academic ReadingFormulas & Lit Review

    Import a 30-page research PDF. Use Nougat to extract equations. Select Section 3, ask AI in 'Analogy Mode' to break down Multi-Head Attention, and save to notes.

    Import Scenario

    Professional Exam Prep

    Certificate PrepRecall Cards & Quizzes

    Import CKA syllabus. Auto-generate 50 active recall cards from mock questions. Schedule SuperMemo reviews to keep the forgetting rate under 5%.

    Import Scenario

    Creator Courseware Building

    Output LearningMulti-modal Outlines

    Type 'Next.js 15 Full-Stack development'. AI collects documents and generates a 6-chapter course outline with coding quizzes, exportable as PowerPoint slides.

    Import Scenario

    Corporate Training & SOPs

    Corporate SOPsCustom Avatar Tutors

    Upload standard operating procedures. AI generates a virtual assistant avatar. New hires chat with it to simulate SOP scenarios and get audited.

    Import Scenario

    Multilingual E-Book Studies

    Language StudyBilingual Parallel Read

    Import 'Thinking, Fast and Slow' EPUB. AI does sentence-by-sentence analysis, highlights cognitive biases, and adds comments from literature.

    Import Scenario

    Coding & Tech Stack Mastery

    Skill MasterySandbox Coding Tests

    In Python algorithms, AI generates dynamic programming coding quizzes. User codes in the built-in sandbox and gets execution reports.

    Import Scenario

    AI-Moderated Study Groups

    Collaborative studyAI Book Reports

    Open a virtual study room. Import 'The Lean Startup'. AI sets discussion guidelines and synthesizes notes from all group members.

    Import Scenario

    Web Snippets & Noise-Free Clipper

    Knowledge ClippingClean Web Text & Tags

    Clip a 5000-word blog post. AI strips sidebars, generates a 200-word bullet summary, and tags it with `#LLM` and `#RAG`.

    Import Scenario
    Start Learning Now
    Why Choose LearnBook

    Designed for Deep Internalization & Output

    Breaking the read-and-forget loop. We provide a scientific workflow backed by feedback systems.

    10×

    Smarter Reading & Ingestion

    academic PDF layout parsing with Nougat and ELI5 concept breakdowns clear away all abstract jargon.

    Nougat academic parsing
    ELI5 & Analogy modes
    Full-book context Q&A
    01 / 03
    95%

    Long-Term Retention Rate

    Stop passive reading. Convert notes into active recall flashcards powered by spaced repetition scheduling.

    Auto-generate flashcards
    SuperMemo spaced reviews
    Retention & weakness grids
    02 / 03
    Zero friction

    From Inputs to Structured Courses

    Convert research notes, clippings, and books directly into courseware outlines and interactive exams.

    Multi-level course builders
    Markdown & PPT exports
    Custom Socratic tutors
    03 / 03
    Pricing Plans

    Choose Your Learning Supercharge Plan

    Try core tools for free. Unlock premium subscriptions to store larger vector libraries and deploy custom AI Tutors.

    Additional courseware credits can be bought separately. New users receive 50 points upon registration.

    See All Plans
    forever
    Free
    Get started with AI video & image generation
    $0 forever
    Included credits
    Up to 90 credits/month via daily check-in
    Best for
    Trying the platform and creating occasionally
    Best Value
    Pro
    For power users, studios, and API workflows
    $19.9per month
    Included credits
    800 credits/month
    Best for
    Heavier image + video workflows and advanced tools
    Typical output
    ~200 images Nano Banana 2 image
    ~13 clips Veo 3.1 video clip
    Lifetime
    Lifetime
    One-time payment with Pro access and monthly credits
    $599 one-time
    One-time payment
    Included credits
    800 credits/month forever
    Best for
    Long-term personal use with one payment
    Typical output
    ~200 images Nano Banana 2 image
    ~13 clips Veo 3.1 video clip
    Start Deep Learning

    Move From Passive Reading to Verifiable Mastery

    Join LearnBook today and build your lifelong knowledge operating system.

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