Skip to main content
Built for educators, authors, readers, and communities across languages and cultures.
Designed for access, not gatekeeping.

An operating system for learning

kaoS combines reading, listening, conversation, and discovery into one coherent experience. Upload what you have or start with our library. Get instant context, deeper connections, and learning paths that adapt to your needs—without getting in your way.

Intelligent reading support
Explanations, summaries, and cross-references when you want them.
Living content
Bookcasts and Spark turn static pages into conversations and fresh ideas.
Your library, upgraded
Upload anything; get structure, study guides, and discovery.

Every book becomes a conversation

Hear thoughtful, multi-voice discussions—context, themes, and meaning—like listening to friends who've read everything.

Explore Bookcasts

Fresh ideas, every day

Spark creates articles and dialogues that connect books, topics, and cultures—from quick insights to deep dives.

Explore Spark

Built for how you learn

Multi-language support, dyslexia-friendly layouts, high-contrast modes, and clear narration with synced highlights. Access is a feature, not an afterthought.

Learn in your language
Explore others with helpful context when you need it.
Listen while you read
Natural voices with text highlighting for comprehension.
Thoughtful defaults
Readable typography and contrast across devices.

Start free. Grow as you do.

Explore on a free plan. Simple monthly options for readers and authors. Tailored plans for publishers and institutions.

See pricing