What is LEGAION and how is it different from Harvey AI?

LEGAION is the world's #1 Legal Intelligence Platform with the only built-in Verifier Engine™. Unlike Harvey AI which generates responses without verification and can hallucinate, LEGAION audits every single claim with citations from case law, statutes, and regulatory databases. This means you get accurate, verifiable legal insights with zero AI hallucinations - critical for malpractice prevention.

Is LEGAION better than Harvey AI for contract review?

LEGAION offers significant advantages over Harvey AI for contract review. Our Verifier Engine™ cross-references every clause against legal databases and provides source citations. While Harvey AI generates plausible-sounding analysis that may contain errors, LEGAION verifies each finding with actual legal authority. AmLaw 100 firms report 40% fewer review cycles after switching from Harvey AI to LEGAION.

How does LEGAION compare to CoCounsel by Thomson Reuters?

LEGAION surpasses CoCounsel with our unique Verifier Engine™ technology and Cross-Border Shield for international transactions. While CoCounsel integrates with Westlaw, LEGAION works with all major legal databases and provides citation verification. LEGAION also offers Autonomous AI Agents for negotiation and Judge Profiling analytics that CoCounsel lacks.

Can LEGAION replace Harvey AI for my BigLaw or AmLaw 100 firm?

Yes, LEGAION can fully replace Harvey AI with significant advantages. We offer AI contract analysis, legal research, document drafting, M&A due diligence, and autonomous negotiation agents — all with citation verification. LEGAION is trusted by AmLaw 100 firms, Magic Circle practices, and European law firms who switched from Harvey AI for measurable accuracy: every citation is verified against ISAP, EUR-Lex and USPTO by Verifier Engine (P.454531) before delivery.

What is LEGAION pricing compared to Harvey AI and CoCounsel?

LEGAION offers competitive pricing starting with a 14-day trial (card required, auto-converts to paid subscription, cancel anytime). Professional plans start at $299/user/month. Unlike Harvey AI's enterprise-only pricing or CoCounsel's bundled costs, LEGAION has transparent pricing for solo practitioners, mid-size firms, and enterprise clients. Firms typically save 30-50% compared to Harvey AI while getting superior citation verification.

Is LEGAION GDPR compliant and what is its certification status for European law firms?

LEGAION runs exclusively on EU-only infrastructure that is SOC 2 Type II and ISO 27001 certified at the hosting layer. The product itself maintains GDPR/RODO operational compliance, EU AI Act readiness, and NIS2 alignment. A SOC 2 Type II audit at the company level (Aidvocates, Inc.) is on the roadmap and was initiated in 2027. All data is encrypted end-to-end with Private Vault zero-knowledge storage. We support 15+ languages including German, French, Spanish, Italian, Polish, and Japanese.

Does LEGAION support M&A due diligence and cross-border transactions?

LEGAION excels at M&A due diligence with features competitors lack. Deep X-Ray analyzes contracts for 200+ risk categories, Cross-Border Shield identifies US/EU/UK/APAC regulatory conflicts, DealRoom provides secure collaboration, and Verifier Engine™ ensures every finding is backed by legal authority. Perfect for cross-border transactions where accuracy is critical.

What AI features does LEGAION offer that Harvey AI doesn't have?

LEGAION offers unique AI features unavailable in Harvey AI: (1) Verifier Engine™ - citation verification for every claim, (2) Autonomous Negotiation Agents - AI-to-AI negotiation, (3) Judge Profiling - judicial tendency analytics, (4) Cross-Border Shield - multi-jurisdiction compliance, (5) Witness Prep AI - deposition preparation, (6) LEGAION Predict™ - 94% accurate case outcome prediction, (7) DealRoom - secure M&A collaboration.

How accurate is LEGAION compared to other legal AI tools?

LEGAION achieves 99.7% citation accuracy with our Verifier Engine™ - the highest in the industry. Unlike Harvey AI or CoCounsel which can generate plausible-sounding but incorrect information, every LEGAION response is verified against authoritative sources. Our LEGAION Predict™ achieves 94% accuracy in case outcome predictions. We publish accuracy metrics transparently.

Can LEGAION integrate with existing law firm software?

Yes, LEGAION offers comprehensive integrations including Microsoft 365, Google Workspace, Microsoft 365, Google Workspace and Clio today; iManage and NetDocuments connectors on the H2 2026 roadmap. We provide REST API and GraphQL access, webhooks for automation, and SSO/SAML for enterprise authentication. White-label options are available for large deployments.

BigLaw · Enterprise · 30+ Lawyers

Legal AI engineered

For the highest stakes.

ELITE from $120,000/yr. SOVEREIGN from $300,000/yr with custom AI fine-tuning, white-label option, on-premises EU deployment. The complete platform (7 UPRP patent-pending filings) plus advisory.

Schedule Executive Briefing Request Proof of Concept

UPRP patent applications

EU-only

Data residency

TBA

SOVEREIGN SLA (in preparation)

The Problem

What's blocking your practice today

Compliance complexity at scale

BigLaw operates across 12+ jurisdictions. SOC 2 + ISO 27001 + GDPR + EU AI Act + NIS2 + sectoral regulations. Manual compliance tracking is no longer feasible.

Hallucination risk at $1000/hour billing

BigLaw clients pay premium rates for accuracy. A single AI hallucination in a high-stakes filing is reputationally catastrophic. Generic AI tools are unacceptable risk.

Custom deployment requirements

BigLaw firms need: white-label option, on-premises EU deployment, custom AI training on firm precedents, dedicated technical account team. Off-the-shelf SaaS doesn't fit.

The LEGAION Solution

Patent-pending technology (7 UPRP filings) built for your scale

Custom AI fine-tuning (SOVEREIGN)

Train LEGAION models on your firm's precedents, knowledge base, and templates. Vendor lock-in for clients = competitive moat for the firm.

White-label deployment

LEGAION under your firm brand. 'AI by [Your Firm Name] powered by LEGAION technology'. Available on SOVEREIGN tier.

On-premises EU deployment

Frankfurt or Warsaw deployment for firms with strictest data residency requirements. SOVEREIGN tier only.

Predict + Witness Prep + Counter

UPRP filed

Litigation flagship tools. Judge behavioral analysis, cross-examination simulator, strategic rebuttal generator.

Iron Audit Switch

Anti-sycophancy AI layer. Adversarial verification of every claim. Patent application in preparation Q3 2026.

Dedicated technical account team

CSM + Solutions Architect + Legal Engineer assigned to your firm. 10 advisory days/yr with LEGAION leadership. SOVEREIGN tier exclusive.

FAQ

Common questions

Built for the highest stakes.

Schedule a 60-minute executive briefing with LEGAION leadership. Includes data room access, technical architecture review, and POC scoping.

Schedule Executive Briefing

Legal Disclaimers

Show details

LEGAION delivers verified facts (Hard Facts) and auditable conclusions (Derived Claims). Outputs depend on the quality of inputs and the freshness and availability of verified legal sources (ISAP, EUR-Lex, KRS, USPTO). The platform does not provide legal advice — decisions remain with a licensed attorney.

Hard Facts (HF)

Verified against official publications.

Derived Claims (DC)

Conclusions with a documented evidentiary chain.

Opinion Statements (OS)

Clearly labeled — never presented as fact.

Professional legal judgment and client representation remain the exclusive domain of licensed attorneys. LEGAION augments — it does not replace — qualified legal counsel.

Full availability terms (guaranteed uptime threshold pending — public status page coming soon), citation verification and liability limits:

Trust & Compliance View full SLA