Last updated: 2026-10-13
Glasp is a social highlighter for the web, PDFs, and YouTube videos, with an AI clone feature: it summarizes what you save using a choice of AI model, then builds a personalized AI trained on your own highlights. Over 1 million people use it to turn everyday reading into a shared, searchable knowledge base.
About Glasp
Founded in 2021, Glasp is a social web and PDF highlighter that lets people collect, organize, and share highlights from articles, PDFs, and YouTube videos as they read, storing everything automatically to a personal profile. AI-powered summaries, generated with a choice of ChatGPT, Claude, Mistral AI, or Gemini, turn passive reading into active learning, and users can train a personalized AI clone on their own highlights and notes.
Glasp stands for "Greatest Legacy Accumulated as Shared Proof" and centers on community learning: people follow like-minded readers, discover articles through others' highlights, and build a shared knowledge base together. Highlights export to Notion, Obsidian, Roam Research, and other note apps in Markdown, HTML, CSV, or JSON, and the platform has grown to over 1 million users worldwide among researchers, students, writers, and lifelong learners.
Pricing
50/month billed yearly at $150, or $15 monthly), and Unlimited ($30/month billed yearly at $360, or $36 monthly). Pro adds unlimited private highlights, 1,000 advanced YouTube summaries a month, 100 PDF files, 500 PDF chat messages, 500 AI chat credits on all models and 300 minutes of audio transcription. Unlimited adds 5,000 advanced summaries per 30 days, unlimited PDF uploads, 2,000 AI chat credits, 1,500 minutes of audio, 25 tracked YouTube channels and priority support.
Daily Notion sync and exports are on every plan, including Free. Students get 40% off Pro billed yearly.
| Tier | Monthly price | What it includes |
|---|---|---|
| Free | Free | Free tier, no credit card: unlimited public highlights, 3 basic YouTube summaries/day, 3 advanced summaries per 7 days, 30 PDF files, 20 PDF chat messages/month, 20 AI chat credits/month (Fast model), 30 mins audio/month, daily Notion sync |
| Pro | $12.50/mo | 50/month) or monthly at $15 ($180/year). |
| Unlimited | $30/mo | Billed yearly at $360 ($30/month) or monthly at $36 ($432/year). |
Feature Comparison by Tier
| Feature | Pro | Free | Unlimited |
|---|---|---|---|
| Highlights | Unlimited, private option | Unlimited, public | Unlimited, private option |
| PDF files | 100 | 30 | Unlimited |
| PDF chat messages | 500 | 20 a month | 5,000 |
| AI chat credits | 500, all models | 20 a month, Fast model | 2,000 |
| Audio transcription | 300 min a month | 30 min a month | 1,500 min a month |
| Advanced YouTube summaries | 1,000 a month | 3 per 7 days | 5,000 per 30 days |
| Priority support | — | — | ✓ |
Key Features
- Web & PDF Highlighting: Color-coded highlights save straight from any webpage, PDF, or YouTube video with no separate app or export step required
- AI-Powered Summaries: One click generates a summary of the page, PDF, or video using whichever model you've selected: ChatGPT, Claude, Mistral AI, or Gemini
- AI Clone Feature: Trains a personalized AI assistant on your saved highlights so it can answer questions and suggest articles based on your own reading history
- Social Learning Network: See what like-minded readers highlighted on the same article, and follow specific people whose annotations you find useful
- Multi-format Export: Send highlights to Notion, Obsidian, Roam Research, Evernote, and other note apps as Markdown, HTML, CSV, or JSON
- Kindle Integration: Pulls in Kindle eBook highlights automatically so they sit alongside web and PDF highlights in one profile
Pros
- Highlighting saves straight from the page you're reading, so there's no separate app to open first
- The social feed surfaces highlights other readers made on the same article, which is genuinely useful for finding what to focus on
- Choosing between four different AI models for summaries is unusually flexible for a highlighter tool
- Free tier covers public highlighting fully, so casual users never feel pressured to pay
- Exports to most major note apps, so highlights aren't locked into Glasp's own format
- The AI clone turns a highlight archive into something you can actually query later
Cons
- Public-by-default sharing may not suit professionals handling sensitive information
- Search and organization features could be stronger when managing large highlight libraries
- Limited mobile app support for PDF highlighting and image annotation
- Private highlighting requires paid subscription
- Highlighting may not work reliably on all websites without a page refresh
Product Information
- Cloud
- Yes
- Training
- Documentation
Frequently Asked Questions
What does Glasp actually cost?
Free costs nothing. Pro is $12.50/month billed yearly ($150/year) or $15 monthly, and adds unlimited private highlights plus far higher AI limits. Unlimited is $30/month billed yearly ($360/year) or $36 monthly, with 5,000 advanced YouTube summaries per 30 days and priority support. Students get 40% off Pro billed yearly.
What do you get on Glasp's free tier?
The free tier runs to unlimited public highlights, three basic YouTube summaries a day, 30 PDF files, 20 PDF chat messages a month, and 30 minutes of audio transcription a month. Exports and the daily Notion sync are free too. Private highlights and the Balanced and Deep AI models are what it holds back for paid plans.
What should you use instead of Glasp?
NotebookLM is the closer research pick when you want AI answers grounded strictly in documents you upload rather than public web highlights. Mem takes a different route, an AI-first notes app that auto-organizes what you capture instead of highlighting it in place.
What separates Glasp from NotebookLM?
NotebookLM restricts its AI to a private set of documents you upload; Glasp highlights and AI-summarizes anything public on the open web, PDFs, or YouTube, then shares those highlights socially with other readers. NotebookLM leans toward grounded, citation-style research answers, while Glasp leans toward social discovery and everyday knowledge capture.
What does it take to start using Glasp?
Sign up at glasp.co or install the browser extension, then highlight text on any webpage, PDF, or YouTube video, each highlight saves automatically to your profile. Turn on AI summaries in settings and pick a model to generate your first summary within minutes.
Top Alternatives
- NotebookLM: Pick NotebookLM if your sources are a fixed set of uploaded documents you want to question, not pages you read across the open web.
- Mem: Choose Mem when you want an AI workspace that files and links notes for you, rather than a highlighter that collects what you read.
- Liner: Pick Liner if you want an AI search-and-highlight assistant built around answering questions, with highlighting as the secondary job.
HokAI guides covering Glasp
- Best AI Tools for Summarizing YouTube Videos and Podcasts in 2026: AI Summarizer, MurmurCast and Glasp compared on price, automation and data handling for YouTube video summaries, plus when a free chatbot beats all three.
- Best AI Note-Taking Tools in 2026: Brain2, Glasp, Mem, and Gemini Notebook Compared: Brain2, Glasp, Mem, and Gemini Notebook solve four different note-taking jobs, not one. Real 2026 pricing, free-tier caps, and which one to skip entirely.
- Best AI Tools for YouTube Research in 2026: TubeAI, Gemini Notebook, AI Summarizer, Glasp, and Genspark compared for YouTube research: real 2026 pricing, free-tier limits, and who should pick each one.