Your books, brought to life

Listen to your books.

Talk to your books.

The world’s best reader, 100% free


Join an early community of readers who love us

“Trellis is solving the biggest problem that teachers face: We know that one-on-one attention is incredibly impactful to students, but we can’t clone ourselves, and we have only minutes per student. Celeste, the AI tutor, is fast, reliable, and infinitely available, and she says the things that I would say.”

- Calum Richards, former precalculus teacher, currently at Givewell


Choose a free book from our curated selection, or upload any file


Read a custom high-quality summary


Be guided by your AI tutor, Celeste, who’s read the book you’re reading


Listen to your library with state-of-the-art AI narration

State-of-the-art AI audio narration.

Removal of excess text for an immersive listening experience.

Plus, we’ll have a mobile app soon for offline listening to all your files.

Because reading should be multimodal.


Highlight, annotate, & share your thoughts with others

Save & search marginalia across your whole library.

Auto-tag & cluster notes.

Share your notes with others.

Finally, a relational tool for thought.


Talk to a set of books, or even your entire library

Use power search to chat with your whole library.

Or, make a collection to focus on a certain project or theme.

Compare answers across books & synthesize new takeaways.

Because books are the best teachers.


As thanks for reading this far, an Easter egg 🎁

You can text or call Celeste, too!

Text Celeste @ +1.424.305.0815

The world’s best ideas, at your fingertips