Choose how you explore
Every tier gives you access to the full library. The difference is how deeply you can engage.
Curious
Free
Search — find where it lives in the books
- ✓Ask questions, get pointed to the right chapter
- ✓Short, grounded answers with citations
- ✓Unlimited queries
Most Popular
Companion
$19/month
Understand — Make sense of the books together
- ✓Multi-turn conversations
- ✓Multi-turn conversations
- ✓Creative interpretation of the books' ideas
- ✓Walk through exercises step by step
- ✓Cross-chapter synthesis
Collaborator
$39/month
Grow — Work on a project together
- ✓Everything in Companion
- ✓Design workshops and project approaches with you
- ✓Generate agendas, templates, and plans
- ✓Structured outputs grounded in the books
- ✓Longer context for complex planning