Lexis searches case law. Delta learns your firm.

LexisNexis is the gold standard for legal research. But it doesn't know your clients, your judges, or your opposing counsel — and it never will.

CaseDelta is a legal AI platform that builds persistent institutional memory for law firms — learning your cases, judges, opposing counsel, and drafting preferences over time. Unlike LexisNexis and Lexis+ AI, which provide access to case law, statutes, and secondary sources, Delta learns the practitioner intelligence that legal research databases structurally cannot capture: how your firm practices law, what your judges prefer, and how your opposing counsel behaves.

The key differences

Lexis searches published legal knowledge (case law, statutes, secondary sources). Delta learns unpublished practitioner knowledge (your judges, your opposing counsel, your firm's patterns).

Lexis+ AI costs ~$499/seat. Delta is $1,499/mo flat for the whole firm — no per-seat pricing.

Lexis is sandboxed — it sees the law library but not your practice. Delta connects to your Clio, learns your cases, and builds firm-specific intelligence.

They're complementary — most firms will keep Lexis for research and add Delta for the intelligence layer Lexis doesn't cover.

Feature comparison

Feature
CaseDelta
LexisNexis
Core Function
AI associate — learns your practice and does cognitive work
Legal research — case law, statutes, secondary sources
Knowledge Source
Your firm's data + anonymized network intelligence
Published legal materials (case law, statutes, regulations)
Memory & Learning
Persistent memory that compounds — learns your firm over time
Stateless — no memory of your firm or prior sessions
Pricing
Flat firm tiers: $799 / $1,499 / $2,499 per month
~$499/seat/month for Lexis+ AI
Judge Intelligence
Learns judge tendencies from your cases + network data
Published judicial opinions only — no behavioral intelligence
Opposing Counsel Tracking
Settlement patterns, filing behavior, negotiation tendencies
No opposing counsel tracking
Drafting
Drafts in your firm's style, learns preferences over time
Research summaries — not firm-style drafting
Proactive Work
Morning briefings, deadline alerts, anomaly detection
On-demand research queries only
Clio Integration
Native Clio integration — Delta gets its own credentials
No practice management integration

Published Knowledge vs. Practitioner Knowledge

LexisNexis contains the published body of legal knowledge — case law, statutes, regulations, secondary sources. It's an extraordinary resource that most firms depend on. But there's an entire category of intelligence that legal research databases structurally cannot capture: practitioner knowledge. Which judges actually enforce page limits. Which opposing counsel always files late. Which clients need two reminders to submit documents. How your firm prefers to structure an MSJ brief. This is the intelligence that lives in senior partners' heads and gets lost when people leave the firm. Delta captures it, compounds it, and makes it available to everyone in the practice.

Sandboxed vs. Connected

Lexis+ AI is sandboxed by design — it sees the Lexis library but not your firm's data. It can tell you what the law says, but it can't tell you how your firm practices it. Delta is the opposite: it connects to your Clio, your document management system, and your email. It learns from your actual practice, not from published materials. The result is fundamentally different. Lexis+ AI gives you legal research with AI assistance. Delta gives you an AI associate that knows your firm.

The Network Intelligence Layer

Because Delta works with thousands of firms, it builds an anonymized intelligence layer that neither Lexis nor any individual firm could create alone. Judge tendencies across hundreds of appearances — not just published opinions, but actual courtroom behavior. Opposing counsel settlement patterns across dozens of cases. Typical motion timelines by jurisdiction and case type. This Intelligence Network compounds as more firms join, creating insights that published legal research can never surface.

Per-Seat Pricing vs. Flat Firm Access

Lexis+ AI charges approximately $499/seat/month. For a 10-attorney firm, that's roughly $5,000/month for AI-enhanced legal research. CaseDelta's flat firm tiers mean the same 10-attorney firm pays $1,499/month total — and every attorney, paralegal, and staff member benefits from Delta's intelligence. No seat negotiations, no usage restrictions, no budget discussions about who gets access.

When to choose LexisNexis

If you need case law research and statutory analysis, Lexis is unmatched. Most firms will keep their Lexis subscription — it's a foundational tool for legal practice. Delta adds the layer Lexis doesn't cover: learning your firm, tracking your judges' actual behavior, monitoring your opposing counsel, and handling the day-to-day cognitive work that research tools weren't designed for.

Frequently asked questions

No. CaseDelta and LexisNexis serve different functions. Lexis provides access to published legal materials — case law, statutes, and secondary sources. Delta learns your firm's practice — your judges, opposing counsel, drafting style, and case patterns. Most firms use both: Lexis for research, Delta for intelligence.

Lexis gives you published judicial opinions. Delta gives you behavioral intelligence — how a judge actually handles hearings, their real preferences for brief length and format, their patterns on continuance requests, their typical ruling timelines. This comes from your firm's experience plus anonymized intelligence across the CaseDelta network, not from published materials.

Delta approaches legal work differently than research tools. It focuses on learning your practice, drafting in your style, briefing you on your cases, tracking opposing counsel behavior, and building institutional memory. Many firms pair Delta with a legal research tool — Lexis for the law library, Delta for the firm intelligence that research tools can't provide.

Lexis+ AI costs approximately $499/seat/month. CaseDelta uses flat firm tiers: $799/month for small firms (1-5 attorneys), $1,499/month for mid-size (6-20), and $2,499/month for large firms (21-50). A 10-attorney firm would pay roughly $5,000/month for Lexis+ AI seats vs. $1,499/month for CaseDelta — and CaseDelta covers the entire firm with no seat limits.

Delta connects to your practice management tools (like Clio), document management systems, and email — the systems that contain your firm's practitioner intelligence. It doesn't connect to Lexis directly, because Delta focuses on learning your firm's practice rather than accessing published legal materials.

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