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SIDE-BY-SIDE · 2 OF 3
Two platforms.
Same questions.
Lexis+ AI
ENTERPRISE SEARCH / PRODUCTIVITY
PROMPT
Customer data and queries are not used to train public AI models. LexisNexis processes content via a private, closed-loop AI implementation.
OUTPUT
Users retain rights to generated legal research, drafts, and analysis. LexisNexis does not claim IP ownership over outputs generated.
TRAINING
Explicit contractual prohibition on using Materials to train LLMs. Section 4.3(b) warrants that Subscriber inputs and Subscriber Files will not be used to train any LLM. Section 4.4 confirms LN does not claim IP rights in AI outputs. Opt-out of AI cloud failover available via 30 days written notice (Section 4.6).
COMMERCIAL
Full commercial use in legal practice is the core use case. Generated research and drafts may be used in client matters and legal workflows.
120 verified findings across the displayed surfaces.
Perplexity AI
ENTERPRISE SEARCH / PRODUCTIVITY
PROMPT
Users retain ownership of their queries and uploaded content per Perplexity's Terms.
OUTPUT
Perplexity does not claim ownership of AI-generated answers. Output IP status is not explicitly addressed.
TRAINING
Privacy Policy (effective February 5, 2026) states Perplexity uses data 'to improve the Services (including our AI models).' Opt-out is explicitly available in settings. Email/calendar integration data is explicitly excluded from AI training: 'we do not use or disclose Email Service Information to create, train, improve or fine-tune AI models.'
COMMERCIAL
Commercial use governed by plan tier. API use is explicitly commercial-use-permitted.
118 verified findings across the displayed surfaces.
Empty Comparison Slot
AIRIN SUMMARY
Lexis+ AI carries highly permissive license terms; Perplexity AI carries highly permissive license terms.FOR ENTERPRISE: LEXIS+ AI NOT RECOMMENDED · PERPLEXITY AI NOT RECOMMENDED
↳ Compliance surfaces · side by side
⚡ INTERACTIVE RISK COMPARISON HEATMAP
| RISK SURFACE | LEXIS+ AI | PERPLEXITY AI |
|---|---|---|
| PPrompt Ownership | ||
| OOutput Ownership | ||
| TModel Training | ||
| CCommercial Use | ||
| DData Privacy | ||
| $Tier Differences |
* Click any cell in the heatmap matrix to scroll directly to its verbatim policy citations below.
📂 Intellectual Property & Model Training
P
SURFACE 01
Prompt Ownership
Lexis+ AI
MEDHIGH
Customer data and queries are not used to train public AI models. LexisNexis processes content via a private, closed-loop AI implementation.
“(e) submit Materials into a Compliant AI Tool solely for incidental use in the ordinary course of your business (such as summarization, drafting assistance, or research synthesis), provided that: (i) no Restricted Data or Regulated Data is submitted; (ii) the submission does not…”
Perplexity AI
MEDHIGH
Users retain ownership of their queries and uploaded content per Perplexity's Terms.
“- Your input and output, such as questions, prompts and other content that you input, upload or submit to the Services, and the output that you create, and any collections or pages that you generate using the Services (“ **Service Interaction Information**”). Service Interaction…”
O
SURFACE 02
Output Ownership
Lexis+ AI
MEDHIGH
Users retain rights to generated legal research, drafts, and analysis. LexisNexis does not claim IP ownership over outputs generated.
“4.5 You acknowledge and agree that Output may include content subject to third party intellectual property rights, including rights that may limit your use of such Output, and LN offers no representation or warranty to the contrary, express or implied.”
Perplexity AI
HIGH
Perplexity does not claim ownership of AI-generated answers. Output IP status is not explicitly addressed.
No citation available
T
SURFACE 03
Model Training
Lexis+ AI
LOW⚠ CAUTIONHIGH
Explicit contractual prohibition on using Materials to train LLMs. Section 4.3(b) warrants that Subscriber inputs and Subscriber Files will not be used to train any LLM. Section 4.4 confirms LN does not claim IP rights in AI outputs. Opt-out of AI cloud failover available via 30 days written notice (Section 4.6).
“(b) LN represents and warrants that Subscriber inputs (including Prompts as defined in Section 4.10) and Subscriber Files (as defined in Section 4.9) submitted by Subscriber into the AI Services (i) will not be used by LN to train any large language model(s) and (ii) shall be tre…”
Perplexity AI
LOW⚠ CAUTIONHIGH
Privacy Policy (effective February 5, 2026) states Perplexity uses data 'to improve the Services (including our AI models).' Opt-out is explicitly available in settings. Email/calendar integration data is explicitly excluded from AI training: 'we do not use or disclose Email Service Information to create, train, improve or fine-tune AI models.'
“You may also have the ability to sync your third party email account or calendar (such as Gmail and Google Calendar) with the Services. If you choose to sync these accounts, we will have access to your contacts and information from the email messages and calendar appointments in…”
C
SURFACE 04
Commercial Use
Lexis+ AI
LOW⚠ CAUTIONHIGH
Full commercial use in legal practice is the core use case. Generated research and drafts may be used in client matters and legal workflows.
“(j)use Restricted Data or Regulated Data for any marketing purposes;”
Perplexity AI
HIGH
Commercial use governed by plan tier. API use is explicitly commercial-use-permitted.
No citation available
📂 Data Privacy & Governance
D
SURFACE 05
Data Privacy
Lexis+ AI
MEDHIGH
Enterprise subscribers covered by separate Master Service Agreement. Section 2.4 specifies country-specific contracting entities. HIPAA-eligible configurations may be available for regulated industries.
“We retain your personal information for as long as necessary to provide the Service and fulfill the transactions you have requested, or for other essential purposes such as complying with our legal obligations, maintaining business and financial records, resolving disputes, maint…”
Perplexity AI
MED⚠ CAUTIONHIGH
Standard plan: personal, non-commercial use only. Enterprise terms at perplexity.ai/hub/legal/enterprise-terms-of-service. Email/calendar integration data explicitly excluded from AI model training.
“We retain your information for as long as is reasonably necessary for the purposes specified in this Privacy Policy. When determining the length of time to retain your information, we consider various criteria, including whether we need the information to continue to provide you…”
No fixed retention schedules are provided; retention is effectively open-ended tied to broad business purposes.
$
SURFACE 06
Tier Differences
Lexis+ AI
HIGH
Enterprise subscribers covered by separate Master Service Agreement. Section 2.4 specifies country-specific contracting entities. HIPAA-eligible configurations may be available for regulated industries.
No citation available
Perplexity AI
LOWHIGH
Standard plan: personal, non-commercial use only. Enterprise terms at perplexity.ai/hub/legal/enterprise-terms-of-service. Email/calendar integration data explicitly excluded from AI model training.
“ This Privacy Policy describes how Perplexity AI, Inc. (“ we ”, “ us ,” “ our ”) collects, uses and discloses information about individuals who use our websites ( www.perplexity.ai and https://labs.perplexity.ai ) to access the free version of our product or Perplexity Pro or Per…”