Lexis+ AI is a legal research platform that provides advanced tools for case law, statutes, and legal analysis, helping legal professionals streamline their research and enhance decision-making.
Lexis+ AI is a comprehensive legal research platform powered by the Protégé AI assistant, blending authoritative LexisNexis content, customer documents, and open web data to deliver precise drafting, research, and analysis workflows with hallucination-free, Shepard’s-validated citations.[1][3] Its key features include conversational search, AI-generated headnotes for every case, intelligent document upload and analysis, advanced reasoning via agentic infrastructure with specialized agents for legal research and web searching, and a Best Fit option that automatically selects optimal models like Claude Sonnet 4.5 or GPT-5.1.[1][2]
Designed for legal professionals in law firms, in-house teams, public sector, and academia, it supports use cases such as litigation preparation, contract review, brief drafting, and complex problem-solving by accelerating workflows and surfacing insights from vast legal sources.[3][4] What sets Lexis+ AI apart is its GraphRAG enhancements integrating Shepard’s Knowledge Graph for superior citation accuracy and context, dual Protégé Legal AI and General AI modes for tailored tasks, and a secure, unified interface that ensures complete user control over sources while maintaining enterprise-grade security.[1][2][8]
Sources
LexisNexis explicitly prohibits using materials to train AI models and represents that subscriber inputs will not be use
No training on user data means no opt-out is necessary.
Low risk across data training, licensing, and sharing dimensions.
LexisNexis explicitly prohibits using materials to train AI models and represents that subscriber inputs will not be used to train large language models. Section 1.2(h) strictly prohibits using materials to train AI technologies, and Section 4.3(b) warrants that subscriber inputs and files uploaded into AI Services will not be used by LN to train any LLM.
“[ToS] Section 1.2(h): "use any of the Materials to train (or facilitate the training of) large language models, machine learning models, generative AI, or other similar technologies"; Section 4.3(b): "Subscriber inputs and Subscriber Files uploaded by Subscriber into the AI Services will not be used by LN to train any large language model(s)"”
LexisNexis explicitly disclaims any IP rights in user-generated outputs from AI Services, except for independent content already owned by LN or licensed third parties. The license granted is strictly limited to accessing and using the service in the ordinary course of business, with no sublicensing rights granted to users.
“[ToS] Section 4.4: "LN does not claim intellectual property rights in any content created by your use of the AI Services ('Output') except to the extent that the Output includes Independent Content"; Section 1.1: "non-exclusive, non-transferable, limited right to access and use...the Online Services and Materials"”
The ToS mentions sharing with 'Affiliates' and references a Data Processing Addendum and Privacy Policy for data handling details, but the provided documents do not contain explicit details about third-party sharing practices, sub-processor lists, or restrictions on sharing user content with advertising/analytics partners. The reference to DPA suggests some protections exist but cannot be fully assessed from available documents.
“[ToS] Section 10.3: "the parties acknowledge and agree that we will process such information in accordance with the data protection laws, the LexisNexis Privacy Policy...and the LexisNexis Data Processing Addendum"; Definition of 'Affiliate' in Section 1 indicates potential sharing with affiliated entities”
The ToS provides some retention guidance for subscriber files (60+ days after termination before deletion) and indicates prompts are user-controlled, but lacks comprehensive retention periods for all data types. The language 'reasonable period' and 'unless otherwise required by law' introduces vagueness about standard retention practices.
“[ToS] Section 4.2(b): "After a reasonable period of not less than 60 days from the effective date of termination, LN reserves the right to permanently delete all Subscriber Files"; Section 4.10: "The retention of Prompt history and its deletion is within the control of the Authorized User"”
LexisNexis clearly states it does not claim IP rights in outputs generated by users through AI Services, except for independent content already owned by LN or third parties. Users retain ownership of their generated outputs and subscriber files.
“[ToS] Section 4.4: "LN does not claim intellectual property rights in any content created by your use of the AI Services ('Output') except to the extent that the Output includes Independent Content"; Section 4.9: "Uploading Subscriber Files to the Online Services shall not give rise to any claim of ownership in the Subscriber Files by LN"”
The ToS references HIPAA compliance (with a Business Associate Addendum), GLBA, DPPA, and GDPR compliance through a Data Processing Addendum, but does not explicitly list SOC 2, ISO 27001, or other standard security certifications. The references suggest compliance frameworks exist but formal certification details are not provided in the available documents.
“[ToS] Section 1.5: "To the extent that LN acts as a Business Associate under the Health Insurance Portability and Accountability Act of 1996 ('HIPAA'), the LN Services will operate in compliance with HIPAA"; Section 10.3: "the parties acknowledge and agree that we will process such information in accordance with the data protection laws, the LexisNexis Privacy Policy...and the LexisNexis Data Processing Addendum"”
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