Lexis+ with Protégé: Legal AI software for drafting, research, and analysis

Legal work requires authority and accountability. Lexis+ with Protégé is designed specifically for legal standards. You can trust legal work from Lexis+ with Protégé backed by:

• Responses based on the comprehensive LexisNexis collection of primary law, exclusive secondary sources, and Practical Guidance.
• With CaseBase Hong Kong Citation Service, citations can be verified for validation, status, and treatment, helping ensure authority and reliability.
• More than 2,000 technologists, data scientists, and subject matter experts develop, fine-tune, and validate our AI solutions.
• Responsibly developed AI with expert human oversight: AI development follows the RELX Responsible AI Principles, with human expertise embedded throughout design and improvement processes.

Lexis+ with Protégé is advanced AI, specifically optimised for legal work.

Lexis+ with Protégé is the legal research, drafting, and analysis AI solution. Protégé is the AI assistant built into that platform.

Lexis+ with Protégé is a comprehensive legal AI solution that combines:

• LexisNexis primary law, exclusive secondary sources, and Practical Guidance
• CaseBase Hong Kong citation validation
• AI-powered research, drafting, summarisation, and analysis skills

Protégé is the personalised generative and agentic AI assistant within Lexis+ with Protégé. It powers:

• Intelligent drafting and redlining
• Conversational legal research
• Document summarisation
• Analysis of uploaded materials
• Work automation
• Complex legal workflow management

Protégé adapts to user preferences and can securely leverage both LexisNexis sources and your organisation’s documents to deliver grounded, citation-backed responses.

All Lexis+ with Protégé users benefit from seamless access to the Protégé AI assistant as part of the experience.

LexisNexis has always emphasised two critical AI development tenets:

• Users are in control of personalisation
• Data they share is not used to inform performance for other users


Lexis+ with Protégé is designed with robust privacy and security measures in place to protect sensitive client information and ensure compliance with relevant data protection regulations.


Users can review and manage their personalisation settings at any time, allowing them to adjust the level of personalisation or opt out entirely if desired. Data shared is not used to inform performance for other users.

By putting the user in control and providing transparency around data access and personalisation settings, Lexis+ with Protégé aims to strike a balance between leveraging the power of AI personalisation to enhance legal services and maintaining the highest standards of privacy, security, and user autonomy.

Finally, LexisNexis has a comprehensive data protection program to safeguard customer information, including encryption, compliance with data protection laws, and regular security assessments and audits.

LexisNexis maintains strict data privacy and governance standards across all AI development.

• Customer data is not used to train public AI models.
• Customer data is not used to enhance AI performance for other customers.
• Personalisation features are controlled by the user.
• Personally identifiable information is protected in accordance with global data protection laws.

LexisNexis has established privacy principles, governance structures, and compliance programs to ensure data privacy requirements are met across all jurisdictions where we operate.

Users can upload a collection of securely-saved documents to a personal repository called a Vault. Protégé uses the documents stored in your Vault as the source for AI-powered tasks such as generating timelines, finding citations, analysing counterarguments, or drafting documents. Protégé will also suggest tasks based on the documents uploaded to the Vault, further guiding your work.

• Create up to 50 Vaults with 1-500 documents per Vault. All data is securely stored and encrypted.
• Uploading 11 or more documents automatically prompts you to create a Vault. Vaults are retained until you decide to delete them, and you can add/remove documents from your Vault at any time.
• Uploads up to 10 documents, not saved to a Vault, are automatically purged at the end of each session.
• Results from Protégé Vault are retained for 90 days under "My Conversations" history.

Lexis+ with Protégé offers both Legal AI and General AI, allowing legal professionals to choose the right tool for each task.


Legal AI

• Optimised specifically for legal work
• Grounded in authoritative LexisNexis sources
• Includes CaseBase Hong Kong's citation service
• Designed for research, drafting, and analysis that require strict legal reliability

General AI

• Designed for broader reasoning, drafting, strategising, and exploration
• Supports legal-adjacent tasks such as client communications or business analysis
• Operates within the secure LexisNexis environment
• Allows users to incorporate real-time web sources as well as LexisNexis sources

This approach gives legal professionals the ability to use AI confidently for both precision-driven legal work and broader analytical tasks — all within a secure platform built for legal work.

Lexis+ with Protégé pricing varies based on factors such as the size of your organisation, specific capabilities required, and the scope of content access. LexisNexis offers customised pricing tailored to individual needs.


For detailed pricing information, contact LexisNexis directly by submitting your information on this page. LexisNexis can provide a quote based on your specific requirements and offer guidance on the most suitable subscription plan for your practice.