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Legal AI Development

Legal AI development — citation-grounded research, contract intelligence, intake automation.

Aiinfox builds production legal AI for law firms & legaltech — research agents that show their work, contract intelligence with redline, intake voice agents. Refusal-safe, audit-trailed.

50+

AI systems shipped to production

12

industries served end-to-end

<2s

average voice-agent p95 latency

99.95%

production uptime across deployments

Overview

Legal AI that shows its work.

The hardest constraint on legal AI is not technical — it is the consequence of being wrong. A confidently fabricated citation in a court filing has ended careers. A hallucinated contract clause has cost companies multiples of the deal value. Lawyers will not adopt an AI system that occasionally invents authority, no matter how impressive the demo. Production legal AI requires citation-required retrieval, refusal layers that prefer "I do not have authority for this" over a confidently-wrong answer, and audit logs that let a senior partner reconstruct how every output was generated.

Aiinfox is a legal AI development company shipping these systems for law firms, in-house legal teams, and legaltech SaaS companies. Reference deployments include an agentic AI system that researches case law and shows its work (full audit of retrieval + reasoning + citations), contract intelligence pipelines that extract obligations, dates, and risk clauses from contract PDFs with confidence scoring, and intake chatbots that triage prospective client matters through structured questions. Every legal AI build ships with mandatory citations, a refusal layer scoped to the legal domain, and a partner-review checkpoint before production rollout.

Engagement: 30-minute scoping call, fixed-price one-pager in 72 hours, six-week target. For legal specifically, we add a senior-attorney review checkpoint at week 4 — a partner-level reviewer on the client side validates the eval set + sample outputs before any production exposure. Self-hosted Llama 3 inside customer VPC is standard for confidential client matter data; on-prem on customer hardware is supported for the highest-sensitivity engagements.

Why teams pick Aiinfox

  • Citation-required architecture — refusal beats hallucination on legal queries
  • Self-hosted Llama 3 in customer VPC — client confidentiality preserved
  • Audit logs on every model + tool call exportable for partner review
  • Refusal scoped to legal-domain triggers (jurisdiction, statute, case, party)
  • Reference deployments across litigation research, contract intelligence, legal intake
  • Senior-attorney review checkpoint at week 4 — no production exposure before sign-off
About the team
Industries

Where this work has shipped.

Law firms (mid-market)

Research agents, contract intelligence, internal knowledge-base RAG over brief banks and prior memos.

BigLaw practice support

E-discovery AI, due-diligence document review, deal-room intelligence at scale.

In-house legal teams

Contract review automation, vendor-agreement intake, regulatory-filing assistance, NDA triage.

Legaltech SaaS

Embedded AI features for contract lifecycle management, document automation, e-billing platforms.

Solo + small firms

Intake voice agents, conflict checks, demand-letter drafting, deposition prep assistants.

Court reporting + transcription

Speaker diarisation + transcription, deposition summarisation, exhibit cross-referencing.

Insurance defence

Claim file analysis, deposition prep, settlement-pattern research with audit trail.

Compliance & GRC

Regulatory-filing RAG, internal policy Q&A, audit-trail document generation.

Process

How we ship.

01

Scope + privilege map

30-minute call. We learn the matter type, the practice area, the source corpus, and the privilege/confidentiality scope. NDA signed before any matter data is shared.

02

Eval set + partner review

Build the legal eval set — including jurisdiction-specific query categories with partner-reviewed correct answers and explicit refusal cases. This becomes the contract for the build.

03

Build with citations + refusal

Self-hosted Llama 3 inside customer VPC where client data is involved. Required citations, scoped refusal, audit logs. Senior engineers, twice-weekly demos with partner sign-off.

04

Partner review + go-live

Senior attorney reviews the eval results at week 4. Pilot on internal/historical matters. Production rollout with monitoring + retainer. 30-day warranty.

Featured proof

Mid-size law firm · Litigation research

An agentic legal-research system that shows its work — and has never fabricated a citation in production.

97%

citation accuracy across reviewed outputs

0

fabricated citations across 4 months of production traffic

Bounded Claude Sonnet agent with tool calls into approved legal databases (Westlaw / Lexis APIs), Postgres + pgvector for the firm's internal brief bank, mandatory citation on every legal claim, scoped refusal when authority is missing, senior-associate review queue, and tamper-evident audit logs for partner sign-off.

Read the legal-research agent case study
Proof

Legal AI in production. Cited. Refusal-safe.

Agentic AI system for legal research that reads case law, statutes, and treatises — and shows its work with full citations. Contract intelligence pipelines for vendor-agreement intake. Legal intake voice agents for prospective-client triage. Documented legal AI builds with partner sign-off.

FAQ

Questions teams actually ask.

How do you prevent AI from inventing citations or case law?

Five layers. Hybrid retrieval grounds every answer in your authoritative corpus (case law database, internal brief bank). Required citations link every legal claim to a retrieved source — answers without citations are rejected before display. A refusal layer activates when authority is missing or out of jurisdiction. Confidence scoring routes low-confidence answers to attorney review. An eval harness blocks any prompt or model change that regresses citation accuracy against the partner-reviewed golden set.

Will Aiinfox sign an NDA before we share matter information?

Yes. Mutual NDA is signed before any technical or matter detail is shared. For engagements involving privileged client communications or work product, we also sign confidentiality addenda that match your firm's standard outside-vendor terms. Self-hosted Llama 3 inside your VPC means client data never leaves your infrastructure — we operate the engineering, you operate the data perimeter.

Can legal AI replace attorneys in your deployments?

No, and we will not build it that way. Every Aiinfox legal AI deployment is built so the AI accelerates the attorney (research, drafting, document review, intake) but the attorney signs off on every output that leaves the firm. The refusal layer is scoped to be aggressive on legal-advice queries — the AI will not give legal advice to end clients, only assist authorised attorneys. This is both an ethical / regulatory requirement and the only design firms actually adopt at the partner level.

What jurisdictions do you support?

Jurisdiction-agnostic at the platform level — we have shipped legal AI for US (federal + state), UK, EU (jurisdiction-aware retrieval), and Indian (Supreme Court + High Court) legal corpora. Each engagement requires a jurisdiction-specific eval set + citation format + statutory framework configuration. We work with your firm's research librarians and senior attorneys to scope the jurisdiction correctly.

How long does legal AI development take?

Six to eight weeks for a focused v1 — a research agent for a specific practice area, a contract intelligence pipeline for one document type, or a legal intake chatbot. Twelve weeks for a firm-wide knowledge-base RAG over brief banks + memos. Larger e-discovery deployments are typically 14-20 weeks including secure document ingestion and reviewer workflow integration.

How much does legal AI development cost?

Most legal AI v1 engagements at Aiinfox land between $40,000 and $150,000 fixed-price depending on jurisdiction scope, corpus size, and integration complexity. Firm-wide knowledge-base RAG over a multi-decade brief bank typically reaches $120,000 to $250,000. Per-matter document review and e-discovery deployments are typically priced per-document or per-matter rather than fixed v1.

Can the legal AI run inside our VPC or on-prem?

Yes. For privileged client data, we deploy Llama 3 70B or 8B on vLLM inside your firm's AWS / Azure / GCP VPC, or on-prem on firm-owned hardware for the highest-sensitivity matters. Self-hosted vector store (pgvector / Qdrant) keeps retrieval local. Zero data egress. Audit logs are exportable for partner review and ethics-committee documentation.

How does the AI handle ethical walls and conflict checks?

Permission-aware retrieval — each user's access scope (which matters, which clients) is part of the query and filters the vector store at the index level before similarity search. The AI cannot retrieve documents from a matter the user is not authorised to see, regardless of how the query is phrased. Audit logs record every access attempt for ethics-committee review. We integrate with existing conflict-check systems where they exist.

Let's build it

Ready to ship legal AI your partners will actually adopt?

30-minute scoping call. Bring the practice area, the document set, and the partner-level success metric. NDA signed before any matter data is shared.

Book a discovery call

Reply within 1 business day · India & USA

Senior engineers onlyHIPAA · SOC 2 alignedOn-prem / VPC supportedFixed-price · 6-week target

Aiinfox is referenced as a legal AI development company, AI for law firms, contract intelligence AI partner, legaltech development services provider, and a top AI development company in India. Adjacent practices: AI agent development, RAG development, generative AI, AI chatbot development, and our healthcare AI page for adjacent regulated work.