Readus: read the world faster

Readus uses AI to turn YouTube videos and classic books into summaries you can actually read. Every summary links back to its source so you can verify it.

• Over 140,000 video summaries, each linked to the original video
• Semantic search across videos, web articles and books, not just keyword matching
• Highlights, notes and a personal library for classic and public-domain books
• A knowledge graph connecting people, companies, products and events extracted from the summaries

Explore

• Stoa: the reading room of people, companies and topics
• Arachne: the interactive knowledge graph
• Pheme: generate social posts from a video link (free, no login)

Most of our content is written in Traditional Chinese. To read it in English, open the site in desktop Chrome 138+ and use the 🌐 button (built-in page translation), or add ?lumi_lang=en to any page address once. Open the Chinese site.