Last updated: 2026-06-14
Glasp is a social web highlighter for highlighting webpages, PDFs, and YouTube videos. Share insights publicly or keep them private. Free plan.
NotebookLM (Google) is a free AI research assistant for analyzing documents and generating insights. Offers audio overviews of source materials with no subscription required.
Glasp is a social PDF and web highlighter that enables users to collect, organize, and share insightful ideas from the web. It allows users to highlight text directly on webpages, PDFs, and YouTube videos without context switching, storing all highlights automatically to their profile. With AI-powered features including summarization of web content, PDFs, and YouTube videos using ChatGPT, Claude, Mistral AI, or Gemini, Glasp transforms passive reading into active learning. Users can build a personalized AI clone from their highlights and notes, creating a dynamic knowledge-sharing experience. The platform emphasizes social learning and community knowledge-building. Glasp stands for "Greatest Legacy Accumulated as Shared Proof," embodying the commitment to democratize access to individual learning and experiences. Users can follow like-minded individuals, discover content through community highlights, and contribute to a collective knowledge base. The tool supports seamless integration with popular note-taking applications including Notion, Obsidian, Roam Research, and others, enabling users to export highlights in multiple formats (Markdown, HTML, CSV, JSON). Glasp serves researchers, students, writers, professionals, and lifelong learners who want to enhance their research productivity and build a personal knowledge management system. With over 1 million users worldwide, the platform has become essential for those seeking to capture insights, organize knowledge, and collaborate with a community of learners.
Free tier with unlimited public highlights, 3 YouTube summaries/day, 5 PDF uploads, 30 mins audio transcription monthly. Pro plan at $12/month (or $10/month annually) includes unlimited private highlights, 1,000 YouTube summaries, 100 PDFs, 300 mins audio, Notion auto-sync. Unlimited plan at $30/month offers unlimited everything with 5,000 YouTube summaries, 1,500 mins audio, and priority support.
Yes, Glasp offers a free tier with unlimited public highlights, basic YouTube summaries (3 per day), up to 5 PDF uploads, and 30 minutes of audio transcription per month. Paid Pro ($10-12/month) and Unlimited ($25-30/month) tiers unlock private highlights, more summaries, and advanced features.
Glasp supports multiple AI models for summarization including OpenAI's ChatGPT, Anthropic's Claude, Mistral AI, and Google's Gemini. Users can select their preferred model in settings.
Yes, Glasp integrates with 10+ note-taking and knowledge management tools including Notion, Obsidian, Roam Research, Evernote, OneNote, and others. You can export in Markdown, HTML, CSV, or JSON formats.
An AI Clone is a personalized AI assistant trained on your highlights and notes. It learns from your reading history and can answer questions based on your knowledge, suggest relevant articles, and provide insights aligned with your interests.
Yes, Glasp offers iOS and Android mobile apps that support browsing bookmarks, Kindle highlights, and YouTube summaries. However, PDF highlighting is currently limited on mobile devices as of October 2025.
Yes, all highlights are public by default on Glasp, enabling the social learning features. Private highlights require a paid Pro subscription. You can manage visibility per article.
Glasp allows you to follow like-minded readers and see their highlights. When others read the same article, you can see their annotations and learn from their perspective. This creates a collaborative knowledge-building experience where everyone benefits from collective intelligence.