Research too largefor ordinary AI chat.
LEGACHÉ builds Cassandra: a pay-once Constellation Dataset engine that turns research corpora into source-grounded AI workspaces you own, export, and reuse.
What you upload
Papers, notes, reports, manuals, transcripts, and mixed technical docs.
What Cassandra builds
A reusable Constellation Dataset that connects claims, methods, definitions, evidence, gaps, and citations.
What you keep
A source-grounded workspace you can chat with, inspect in tables, export, and reuse.
How It Works
From messy corpus to research workspace.
Cassandra is built for the moment when search, folders, and one-off summaries stop being enough.
01
Define your Goal
Explain your research goal in natural language, just as you would to your own research team.
02
Upload the corpus
Bring the messy research packet together instead of working one PDF or note at a time.
03
Approve the Build
Review the size and build-time estimate, then approve your Constellation Dataset.
04
Chat, Visualize, Own
Ask source-grounded questions, explore the connected data visually, and export the result in portable formats.
Why LEGACHÉ Is Different
Why 1 + 1 does not equal two.
Documents do not become valuable by sitting next to each other. Cassandra enriches the corpus so the relationships between definitions, methods, claims, findings, and evidence become visible.
Drastically reduce friction from:
- Duplicated research effort
- Missed findings or weak evidence trails
- Inconsistent interpretations across teams
- Knowledge loss when people leave
- Hallucinations from unanchored reasoning
- More time searching instead of reasoning
10x+
minimum target for richer data points after enrichment, giving a more complete corpus view.Use Cases
Built for work where the record is large and the answer must hold up.
Literature & thesis research
Compare claims, methods, findings, gaps, and citations across papers, then turn sources and notes into a reusable research workspace.
Technical & lab knowledge
Analyze manuals, specifications, implementation documents, reports, methods, prior findings, and experimental context together.
Policy & proposal support
Inspect evidence, definitions, stakeholders, and contradictions while grounding claims, evidence trails, related work, and missing context.
Due diligence
Synthesize market, scientific, legal, and technical document packets into a source-grounded view.
Cross-discipline demo corpora
Explore example corpora spanning biology, chemistry, data science, earth science, economics, psychology, and physics.
Business Model
Two ways to build. Every Constellation is yours for life.
Choose a $25 one-time Constellation or an $80 monthly bundle with eight creations per paid billing period. Every Constellation remains hosted for life with unlimited chat sessions, lifetime ownership and downloads, and augmentations based on the option you choose.
Per constellation
$25
One-time creation with lifetime hosted access, unlimited chat sessions, lifetime ownership and downloads, and two lifetime augmentations.
Monthly
$80/mo
Eight creations per paid billing period, with lifetime hosting, unlimited chat sessions, five lifetime augmentations each, and additional constellations for $25.