Deterministic Reasoning Infrastructure. The LLM is the terminal. The substrate is the operating system.
THEMIS turns multi-document corpora into provably consistent operational truth. The LLM is the terminal. THEMIS is the operating system.
What THEMIS actually is
What it is
A pure compute substrate (no UI, no storage) that resolves a document corpus into composable, versioned knowledge: structure, dependencies, obligations, scenarios, canonical truth.
What it replaces
Manual diligence across high-stakes agreements, siloed point AI tools, and the cycle of re-review every time an amendment lands.
What you gain
A single immutable source of operational truth that never needs re-ingestion, never improvises, and gets sharper with every new version.
Reasoning as a compiler, not a chat
THEMIS treats high-stakes agreements the way compilers treat source code. Every capability maps to something engineers already understand — and behaves deterministically because of it.
Vertical-agnostic by design
The engines are generic. Domain knowledge ships as rule packs — not as code changes. The same compute substrate serves real estate, M&A, procurement, clinical, supply chain, and beyond.
// To support a new jurisdiction or domain:engine.loadRulePack("texas-real-estate-v2.json")// No engine changes. Just a rule pack.
What the substrate powers
THEMIS exposes six capability clusters served by nineteen underlying engines. The per-engine reference lives in the technical reference.
Structural Reasoning
AST parsing, defined-term resolution, cross-reference linking. The corpus becomes a structured artifact, not a flat text.
Dependency Intelligence
Every cross-clause, cross-document, and cross-party dependency is tracked as a graph edge with consistency constraints.
Obligation Runtime
Parties, duties, conditions, and milestones are tracked as a state machine — not summarized as text.
Scenario Simulation
Closing probability, counterparty behaviour, and amendment cascades simulated against the canonical record.
Self-Healing & Drafting Guardrails
Contradictions are surfaced and resolved deterministically. Generated language is bound to consistency rules.
Risk & Compliance Observability
Quantified risk, jurisdictional alignment, and audit-grade explainability for every conclusion.
Zero lock-in
You own the documents
Source material remains in customer storage. THEMIS is compute-only.
You own the canonical record
The compiled operational truth is exportable in standard formats.
Provider-agnostic
Switch reasoning models without re-ingestion or re-training.
Standard interfaces
JSON exports, GraphQL API, webhook events.
Tier ladder
The substrate is adopted in tiers. Each tier unlocks the next layer of governed reasoning. Tier 3 is the full deterministic surface.
Process high-stakes work against provable truth
Replace fuzzy review and improvised reasoning with a substrate that resolves, computes, and explains. THEMIS is available via API.