Lex Interpreter by QuickMap
Deep legal reasoning in production

Deterministic reasoning for civil-law legal AI.

Lex Interpreter is a multi-layer reasoning engine built for continental law. Not a prompt on top of GPT. A purpose-built infrastructure that applies the complete methodology of statutory interpretation — across every branch of law and every layer of analysis — running today at leading European firms.

Status Running in production at leading European firms
Scope Polish legal corpus indexed in full — tax, labor, civil, criminal, administrative, accounting
Architecture Multi-layer deterministic reasoning engine
active session li/2026
query
issueCIT — research relief eligibility, art. 18d
factsSp. z o.o. · R&D expenses 2024 · 1.2M PLN
law as of2024-12-31
reasoning layers
Norm retrieval complete
Norm decomposition complete
Intertemporal resolution complete
Conflict-of-laws layer complete
Fact-to-norm subsumption processing
Citation verification queued
Substantive review queued
interpretation · partial
R&D relief under Art. 18d § 1 of the CIT Act is satisfied with respect to personnel costs. External cooperation costs require verification of the counterparty's status as a qualifying research unit.
multi-source citations all verified peer reviewed
Running daily in leading law and tax firms
I · Capabilities

What Lex Interpreter delivers.

Outputs that read like a senior practitioner's work product — not summaries, not bullet points, not "best guesses." Every conclusion is traceable, every citation verified, every analysis independently reviewed before reaching the user.

i

Full legal opinion

A complete written analysis in lawyer's prose — question, answer, legal basis, facts, reasoning. Structured for direct use, not for further editing.

ii

Verified citations

Every cited provision is matched against the source text. No invented unit numbers. No hallucinated articles. If it is cited, it exists.

iii

Multi-layer verification

Each opinion passes through independent verification before delivery. Only outputs that pass reach the user. Failed runs loop back for correction.

II · Why it matters

The difference between guessing and reasoning.

Generic legal AI pattern-matches on legal text. It produces plausible-sounding output that often hallucinates citations, invents conditions, and overlooks exclusions. The problem is not the model — it is the absence of method.

Lex Interpreter operates on legal structure. It applies the methodology a senior practitioner applies — fully, in order, across every layer of analysis. The result is output a lawyer can sign, not output a lawyer must redo.

IV · In production

Not a prototype. Deployed. Used. Trusted.

i Built and maintained by practicing tax counsel and litigators, not by engineers approximating legal work from the outside.
ii Currently in daily use at leading Polish law firms and Big Four advisory teams. Real opinions on real client matters.
iii Polish legal corpus indexed in full — across every major branch of law. Architecture extends to German, French, Italian, Spanish jurisdictions without fundamental redesign.
iv Built for depth, not speed. Same category as o3, Claude extended thinking, Gemini Deep Think. Async by design.
Partnerships

For platforms building legal AI in Europe.

Lex Interpreter is licensed as an API and as an embedded reasoning layer. Civil-law agnostic, validated in elite practice, extensible across jurisdictions. Limited pilots, hand-selected, under NDA.

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