AI-powered knowledge base

Build a knowledge base from content you trust

Summarize, chat with, and organize YouTube videos, PDFs, audio files, and text. Build a searchable knowledge base: add any source, extract key insights with AI, and ask questions across everything.

See It In Action How It Works
No signup needed. Real content, real AI extraction.
stashlm.com
FIX YOUR
BRAIN
NEUROSCIENCE
BACKED
2:14:33
The Exercise Neuroscientist: “Do This Every Day to Fix Your Brain”
Dr. Wendy Suzuki 2.1M views 1 month ago
Tomorrow, you'll remember maybe 10%
What if you could keep all of it?
🔗
Add Video →
Analyzing video...
✓ Getting video words
✓ AI finds the key points
✓ Saving to your library
✓ Done! 5 key points found in 28 seconds
0 Insights
0 To-Do's
0 Timestamps
Insight
Exercise makes your brain grow new cells. Every bit of movement counts.
14:22
To-Do
Walk 3 times a week — cuts memory loss risk by 30%.
32:10
Quote
“Your brain is the most powerful thing you own. Take care of it.”
45:03
✓
Saved to your library
You can ask questions about it now
🔍
Answer from 3 sources
🚀
Founders & indie hackers
▸
Extract strategies and growth tactics from business podcasts.
🎓
Students & researchers
▸
Search across an entire semester of lectures instantly.
💻
Developers & self-learners
▸
Turn tutorials and talks into a searchable reference library.
💖
Health, fitness & personal growth
▸
Build a personal knowledge base from the experts you trust.
Works with any content
🎥 YouTube Videos 📄 PDFs 🎙 Audio Files 📝 Text 🏫 Lectures
90%
of what you learn from content is forgotten within a week

✗ Without Stash LM

  • You consume great content, take zero notes, forget everything
  • You know someone said something useful but can't find which source
  • You re-read PDFs and re-watch videos to find one specific insight
  • Hours of learning, scattered across bookmarks, downloads, and tabs

✓ With Stash LM

  • AI automatically extracts the key insights from every source
  • Search across all your content like a personal Google
  • Ask a question, get an answer with exact references and sources
  • Everything organized by project - study, work, research
How it works

Three steps. Under a minute.

No complicated setup. Just add a source and go.

1

Add any source

YouTube videos, PDFs, audio files, or plain text. Paste a link or upload a file.

2

The insight you care about is extracted

Key points, arguments, action items tailored to your custom extraction prompt.

3

Search & ask anything

Find any detail across all your sources. Or ask a question and get an AI answer with references.

Who it's for

Your content, organized and searchable

Stash LM turns scattered learning into a structured, searchable knowledge base.

🎓

Students & researchers

Organize lectures, readings, and papers by subject. Search across your entire semester’s content. Find that one stat from a guest lecture or PDF.

🚀

Entrepreneurs & founders

Track advice from sources you trust. Build a knowledge base from podcasts, articles, reports, and industry leaders.

💻

Developers & learners

Save tutorials, docs, and talks into projects. Search for that exact code pattern or technique across videos and PDFs.

📝

Content creators

Research competitors and industry trends. Collect ideas, quotes, and talking points from videos, podcasts, and articles into organized projects.

Features

Not another generic summarizer

A knowledge base you build over time - from sources you choose.

📚

Project-based organization

Group sources by topic, course, or research area. Each project has its own AI extraction prompt.

⚡

Custom extraction prompts

Tell AI exactly what to extract - key arguments, action items, quotes, technical details, or anything else.

🔍

Semantic search

Search by meaning, not keywords. Find insights even if you don’t remember the exact words used.

🤖

AI Q&A with sources

Ask a question across your library. Get an answer synthesized from your sources, with references and citations.

🕑

Timestamped references

Every insight links back to the exact moment or page in the source. Click to jump directly to the reference.

🔒

Private & secure

Your projects and sources are only visible to you. Nothing is shared, sold, or used for training.

Pricing

Never forget what you learn

Add any source. AI saves the key points. Search across everything you've ever added.

Starter

For a few sources a week

$12/mo
~33 hours of content/month
Resets monthly
  • ✓Up to 50 sources
  • ✓3 projects
Most Popular

Pro

For daily learners

$24/mo
~67 hours of content/month
Resets monthly
  • ✓Up to 200 sources
  • ✓10 projects

Power

For power users and teams

$49/mo
~133 hours of content/month
Resets monthly
  • ✓Unlimited sources
  • ✓Unlimited projects

Every plan includes

  • ✓AI reads every source and pulls out the important parts
  • ✓Ask any question across all your sources at once
  • ✓You choose what AI looks for: quotes, steps, ideas, anything
  • ✓Organize everything into projects by topic
✓ Cancel anytime ✓ Your content stays if you cancel ✓ See the demo with real content

A 10-minute video or a 10-page PDF uses ~10 minutes of your monthly budget. Run out? Your content stays safe. Budget resets next month.

FAQ

Common questions

Everything you need to know.

YouTube videos, PDFs, audio files (like podcast recordings), and plain text. For YouTube, any video with available subtitles works - which is the vast majority. PDFs and audio files can be uploaded directly. You can also paste in text from articles, notes, or any other source.
Most sources process in under 30 seconds. For YouTube videos, we fetch built-in subtitles directly - no slow transcription step. PDFs and text are analyzed almost instantly. Audio files may take slightly longer depending on length.
Projects let you organize sources by topic - like “Startup Research”, “Machine Learning Course”, or “Marketing Ideas”. Each project has its own custom AI extraction prompt, so you can tell the AI exactly what to extract for that subject. When you search or ask questions, you get answers scoped to that project.
Yes! The demo has real content loaded with real AI-generated insights. Browse projects, read extractions, and ask questions - no signup or credit card needed. We also have 60+ free AI tools for YouTube videos, PDFs, audio, and text.
Words are counted from source content and AI processing. A 10-minute video uses ~1,500 words, a 1-hour podcast about ~9,000, and a 10-page PDF about ~3,000. Asking a question uses ~1,000 words. Your budget resets each month.
Yes. Your projects and sources are only visible to you. We don't share, sell, or use your data to train models. Content is processed by AI but isn't stored beyond your request.
Your data stays in your account. You just can't add new sources or ask questions until you resubscribe. Nothing gets deleted.

Stop losing what you learn

Add a video. AI extracts the insights. Search across everything. Takes 30 seconds.

Create Free Account or see the demo first