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HLexis+ AI vs Semantic Scholar
Pricing, features, platforms and who each one suits — side by side.
L
Choose Lexis+ AI if…
- you're in its core audience: law firm attorneys, in-house counsel
S
Choose Semantic Scholar if…
- you want a free plan to start with
- you need an API to build on
- you're in its core audience: researchers, students
Side by side
Feature Lexis+ AI Semantic Scholar
Pricing modelContact for pricingFree
Starting price—Free
Free plan
Free trial
API
Open source
PlatformsWebWeb, API
CategoryLegalResearch Assistants
Rank in its category#4 of 10—
CompanyLexisNexisThe Allen Institute for AI
Based inGermany—
Founded19732015
Part ofReed ElsevierAi2
Key features
L Lexis+ AI
- Protégé AI assistant built for legal professionals
- Legal research summaries grounded in LexisNexis content
- Drafts motions, briefs and transactional documents
- Step-by-step refinement of drafted documents
- Summarizes and analyzes large legal documents
- Secure Vault for uploading documents for AI review
- Connects firm knowledge bases, iManage and SharePoint
- General AI mode with leading AI models
S Semantic Scholar
- Search across 239+ million scientific papers
- Coverage of all fields of science
- Semantic Reader augmented reading for select papers (beta)
- Developer API with paper search
- API documentation, tutorials and gallery
- Free user accounts
- Resources for librarians and publishers
Plans and prices
From each vendor's site. Prices change — confirm before buying.
Lexis+ AI
Contact for pricing. Plan details aren't published.
Semantic Scholar
FreeFree
Strengths and limitations
Lexis+ AI
- Answers grounded in LexisNexis's own legal content
- Vendor states customer data is never used to train AI models
- Integrates with iManage and SharePoint
- No public pricing; sales contact required
- Product has been renamed Lexis+ with Protégé, which may cause confusion
- Features vary by region
Semantic Scholar
- Free to use
- Indexes over 239 million papers from all fields
- Public API with documentation and tutorials
- Built by the nonprofit research institute Ai2
- Semantic Reader is in beta and only works on select papers
- No mobile apps listed
More comparisons
Other options to consider
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Contact
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Facts from each vendor's public pages, prices checked Oct 26, 2026. Editorial policy