Deterministic Contracts Reasoning Engine

The trust layer
for Legal AI

Built for CLMs, Legal AI platforms, and AI-native law firms.

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indemnification_cap■ live · §3.2
conf 1.000✓ deterministic · 138ms
Works with every model
How it works

Determinism delivered

Our neurosymbolic engine reasons over structure, never probability. Vichaara is infrastructure built to operate inside CLMs, Legal AI platforms and AI-native law firms, between their interface and the LLMs.

01Intake

Contracts, redlines and supporting documents flow in from the tools you already run and are structured for analysis.

02Compile
03Reason
04Deliver
Why determinism

Structure beats probability

High-stakes decisions require consistent outcomes and explainability. LLMs can generate language. They cannot be the authority.

The problem
3 in 5
of legal AI’s wrong answers stem from flawed reasoning, not just hallucination.
66–89%
of multi-step legal inferences fail in the best LLMs, which apply the wrong rule or draw false conclusions.
SourcesStanford RegLab (2025)University of Pittsburgh (2026)
With Vichaara
Deterministic
The same query always produces the same answer. No sampling, no drift.
Explainable
Every conclusion carries the exact reasoning process it was derived from.
Grounded
Anchored to clause text, never an answer citing the wrong source.
Capabilities

Legal AI trust infrastructure

A reasoning layer between structured contract data and language-generation systems. Call us at the decision boundary.

State evaluation

Ask Vichaara what your contract actually means: which obligations are live, who holds termination rights, what liability caps apply. Every answer is deterministic and auditable.

EXPLORE→

Event simulation

Tell Vichaara what happened: a missed SLA, notice served, consent withheld. It determines how your contract’s obligations and rights shift as a result.

EXPLORE→

Redline & delta

Submit two versions of a contract and Vichaara surfaces what actually changed in legal position: not which words moved, but which obligations, rights, and caps shifted.

EXPLORE→

LLM-agnostic NLG

Vichaara constrains the drafting space. Your preferred model produces clause language that is structurally consistent with the agreement, regardless of which model you use.

EXPLORE→
Access

Get in touch

vichaara · prompt
deterministic reasoning engine · status: all systems normal
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We are working with a small number of legal AI and CLM teams. Every answer is deterministic, and every determination is explainable.