Lexis+ AI Legal Research Platform & AI Assistant

Transform your legal work
Personalised legal AI for making informed decisions faster, delivering outstanding work, and driving value.

What is Lexis+ AI?

Lexis+ AI is an integrated solution for legal drafting, research, and insights. 

It combines the power of Protégé, a personalised AI assistant, with authoritative LexisNexis content to help legal professionals make informed decisions faster and deliver outstanding work.

Legal AI Assistant Integration

Protégé, Your Personalised AI Assistant in Lexis+ AI

Protégé delivers exceptional, personalised work, tackles complex tasks, and automates repetitive steps.

Conversational Legal AI Search

AI Search That Interacts

Collaborate with Lexis+ AI like you would with a trusted colleague who intelligently and conversationally responds to your requests and refines answers.

AI Legal Drafting

Draft in Moments

Draft contract clauses, and concise client communications, all grounded in authoritative content with remarkable speed, ease, and precision.

Business Impact of Lexis+ AI in the U.S.

New Study Finds 344% ROI of Lexis+ AI for Law Firms

Forrester Consulting conducted an independent Total Economic Impact™ study of Lexis+ AI for large law firms, commissioned by LexisNexis in May 2025.

Legal AI Summary

Accurate & Complete Summarisation

Get the legal summary you need in seconds without clicking into a single search result.

Legal AI Analysis

Upload Your Documents

Extract and summarise key insights and ask queries from firm documents in moments.

Work Confidently with World-Class Security and Privacy

Safeguard your data and knowledge with our private AI multi-model approach, backed with state-of-the-art LexisNexis security and privacy technology.

Private, Multi-Model LLM Approach

LexisNexis employs Privacy by Design principles to keep data and user information secure. Our generative AI applies a private model that does not share user interactions with third parties to improve their products. Our multi-model approach prioritises the best model for each use-case. 

Secure Cloud Infrastructure

LexisNexis systems use commercial-grade cloud infrastructure from Microsoft Azure and Amazon Web Services Bedrock for secure deployment.

What are lawyers saying about Lexis+ AI

Frequently Asked Questions

We employ a “humans-in-the-loop” approach where SMEs, data scientists and engineers are evaluating prompt responses and making adjustments. This is in addition to the adjustments made based upon direct user feedback, highlighting a good or bad output within Lexis+ AI. We are using a team of specialty trained legal experts to test the model’s responses to likely use prompts using a test set of prompts. These experts are trained to evaluate language model output to ensure consistency and quality.

LexisNexis is considered a leader in data privacy best practices and has established data privacy principles, governance structures and control programs designed to ensure that data privacy requirements are met, personally identifiable information is protected, and individuals’ privacy concerns are addressed across all jurisdictions where we operate. Lexis+ AI uses private models, and no third party has access to it. User sessions are also secure, meaning that the input from one Lexis+ AI user doesn’t bleed into the output of another (to preserve client confidentiality). Our models are hosted in protected accounts in commercial-grade cloud infrastructure, so we can manage performance and security.

Lexis+ AI is being developed in a manner to ensure that the output always considers the most recent content available. The foundational LLM is not being updated on a continual basis using our new content, but the latest content is utilised through our RAG approach to ensure it is considered when developing the output.

The company also addressed data sovereignty concerns that have emerged in recent years. Unlike many AI tools that process data in the United States, Lexis+ AI NZ platform will be hosted in Sydney, Australia - a jurisdiction that New Zealand firms consider acceptable for sensitive legal data. 

No personal data is being processed in our current offerings. We have a robust data protection process in place (and that’s been the case for a number of years) and we are working closely with our privacy and information security teams on an ongoing basis.

Book Your Free Demo

Discover Lexis+ AI’s powerful legal research, drafting, and analysis capabilities - now enhanced with Protégé, the personalised AI assistant.

 

A laptop with Lexis+ AI with Protégé interface

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