The Library
Search the original texts — law, philosophy, science, scripture, history. Read them free.
All
Departments
Verified collections.
Reader-ready primary texts, organized by discipline.
Pricing
The knowledge is free.
The intelligence is the product.
The intelligence is the product.
Paid plans fund the work the library runs on: OCR, citation-graph rebuilds, and the search capacity that keeps a query fast. We own what it runs on, so your price stays flat.
Free
$0
- Browse the live catalog
- Quality-screened public catalog
- Source-verified knowledge map
- Read quality-approved public-domain texts
- Book links (read, buy, borrow)
Scholar
$9.99/mo
- All drift terms (unlimited)
- Concept tracker across every era
- Citation chain tracer
- KCS citation export
- API key (1,000 queries/mo)
Researcher
$29.99/mo
- Jurisdiction challenge generator
- Suppression detection reports
- Knowledge Genome (10 dimensions)
- Prediction engine access
- 5K API queries/mo
- PDF exports
Institution
$199/mo
- 100 seats — team API keys
- 50K API queries/mo
- LMS integration
- On-premise deployment option
- SLA 99.9% + account manager
Enterprise
Custom
- Unlimited seats
- Custom knowledge graphs
- Private cloud deployment
- Starting at $25,000/year