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What is Westlaw?

Westlaw is a comprehensive legal research and analytics platform developed by Thomson Reuters for attorneys, legal researchers, government agencies, and corporate legal departments. The platform provides searchable access to case law, statutes, regulations, administrative decisions, and secondary legal materials used in legal research and litigation preparation. Its search technology allows users to locate relevant authorities through natural language queries, Boolean searches, citations, and subject-based navigation. The West Key Number System organizes legal principles into a structured classification system that helps researchers identify related cases addressing specific legal issues. Attorney-written headnotes and editorial summaries provide additional context for evaluating court decisions and understanding their legal significance. KeyCite enables users to verify the validity of cases, statutes, and regulations while reviewing citing references, subsequent treatment, and potential overruling risks. Westlaw Edge includes AI-assisted research that generates synthesized answers grounded in Westlaw content and links users to supporting legal authorities. Quick Check analyzes uploaded briefs and other legal documents to identify potentially invalid citations, overlooked precedents, and authorities that may weaken an argument. Litigation Analytics provides data-driven insights into judges, courts, attorneys, law firms, case outcomes, and damages to support litigation strategy and case evaluation. Additional capabilities include AI Jurisdictional Surveys, Statutes Compare, Regulations Compare, and precision research tools for investigating legal issues across jurisdictions. Westlaw Advantage extends the platform with agentic AI capabilities, Deep Research, litigation document analysis, and research workflows designed to help legal professionals move from finding relevant authorities to developing legal strategies.

What is Alexsei?

Legal memoranda at your fingertips. Alexsei's cutting-edge AI technology delivers cost-effective and superior answers to legal inquiries presented in a memo format, ensuring clarity and accessibility for all users.

Media

Media

Integrations Supported

Deadline Assistant
OpenAdapt

Integrations Supported

API Availability

API Availability

Has API

Pricing Information

$75 per month

Pricing Information

Pricing not provided

Supported Platforms

SaaS

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Not specified

Training Options

Documentation Hub

Training Options

Not specified

Company Facts

Organization Name

Thomson Reuters

Date Founded

2008

Company Location

Canada

Company Website

legal.thomsonreuters.com/en/westlaw

Company Facts

Organization Name

Alexsei

Company Website

www.alexsei.com

Categories and Features

Legal

Not specified

Legal Research

Not specified

Personal Injury Law

Not specified

Categories and Features

AI Legal

Not specified

Legal Research

AI / Machine Learning
Case Law Research
Query Suggestions
Self-Service Search

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