AI-powered YouTube knowledge base

Build a knowledge base from YouTube channels you trust

Transcribe, summarize, and chat with any YouTube video for free. Or build a searchable knowledge base: organize videos into projects, extract key insights with AI, and ask questions across your entire library.

Try the Demo - Free See How It Works
No signup needed. Real videos, real AI answers.
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 videos
🚀
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 YouTube content
🎙 Podcasts 🎓 Tutorials 🏫 Lectures 🎤 Interviews 💬 Talks
90%
of what you learn from YouTube is forgotten within a week

✗ Without Stash LM

  • You watch a great video, take zero notes, forget everything
  • You know someone said something useful but can't find which video
  • You re-watch entire podcasts to find one specific insight
  • Hours of learning, scattered across bookmarks and watch history

✓ With Stash LM

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

Three steps. Under a minute.

No complicated setup. Just paste a URL and go.

1

Paste a YouTube URL

Podcasts, tutorials, lectures, interviews, conference talks. Any YouTube video.

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 videos. Or ask a question and get an AI answer with sources.

Who it's for

Your YouTube, organized and searchable

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

🎓

Students & researchers

Organize lectures and talks by subject. Search across your entire semester’s content. Find that one stat from a guest lecture.

🚀

Entrepreneurs & founders

Track advice from channels you trust. Build a knowledge base from startup podcasts, business talks, and industry leaders.

💻

Developers & learners

Save programming tutorials into projects. Search for that exact code pattern or technique from a 2-hour conference talk.

📝

Content creators

Research competitors and industry trends. Collect ideas, quotes, and talking points from across YouTube into organized projects.

Features

Not another generic summarizer

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

📚

Project-based organization

Group videos 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 videos, with timestamps and citations.

🕑

Timestamped references

Every insight links back to the exact moment in the video. Click to jump directly to the source.

🔒

Private & secure

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

Pricing

Never forget what you learn from YouTube

Paste a video. AI saves the key points. Search across everything you've ever watched.

Starter

For a few videos a week

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

Pro

For daily video watchers

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

Power

For power users and teams

$49/mo
~133 hours of video/month
Resets monthly
  • ✓Unlimited videos
  • ✓Unlimited projects

Every plan includes

  • ✓AI reads every video and pulls out the important parts
  • ✓Ask any question across all your videos at once
  • ✓You choose what AI looks for: quotes, steps, ideas, anything
  • ✓Organize everything into projects by topic
✓ Cancel anytime ✓ Your videos stay if you cancel ✓ Try the demo first, no signup

A 10-minute video uses ~10 minutes of your monthly budget. Run out? Your videos stay safe. Budget resets next month.

FAQ

Common questions

Everything you need to know.

Any YouTube video with available subtitles - which is the vast majority. Podcasts, tutorials, lectures, interviews, conference talks, video essays, and more. The video needs to be publicly accessible on YouTube.
Most videos process in under 30 seconds. We fetch YouTube's built-in subtitles directly, so there's no slow transcription step. AI analysis starts immediately.
Projects let you organize videos 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 videos loaded with real AI-generated insights. Browse projects, read extractions, and ask questions - no signup or credit card needed. We also have 40+ free AI tools that work instantly on any video.
Words are counted from video transcripts and AI processing. A 10-minute video uses ~1,500 words, a 1-hour podcast about ~9,000. Asking a question uses ~1,000 words. Your budget resets each month.
Yes. Your projects and videos are only visible to you. We don't share, sell, or use your data to train models. Transcripts are processed by AI but aren't stored beyond your request.
Your data stays in your account. You just can't add new videos or ask questions until you resubscribe. Nothing gets deleted.

Stop losing what you learn from YouTube

Try the demo with real videos. No signup, no credit card.

Try the Demo - Free