Legal Research
CoCounsel (Thomson Reuters)
Thomson Reuters' AI assistant for professionals, backed by Thomson Reuters content (formerly Casetext).
Best forFirms already on Westlaw that want AI research and drafting tied to that content.
Use case · 7 tools
Legal Research AI tools
AI-assisted case law, statute, and secondary-source research for lawyers. Below are the 7 tools we list for legal research, each with what it’s best for and what to watch out for.
Tools
Legal Research
Lexis+ with Protégé
LexisNexis' AI assistant across its products for research, drafting, and summarizing.
Best forLexis subscribers who want AI inside the research platform they already use.
Legal Research
Vincent AI (vLex / Clio)
vLex's AI for lawyers covering research, litigation analysis, contract review, and judicial profiling across 100+ jurisdictions.
Best forPractitioners needing multi-jurisdiction research; now part of Clio.
Legal Research
Midpage
AI legal research and drafting platform searching US case law, statutes, and regulations.
Best forSolo and small-firm litigators looking for an AI-first research tool.
Legal Research
Paxton
AI workspace for litigation teams that combines case files and legal research and drafts verifiable work.
Best forLitigators who want research and case-file analysis in one place.
Legal Research
CourtListener
Non-profit free legal search engine and alert system for case law, PACER documents, judges, and oral arguments (Free Law Project).
Best forFree case-law searching and docket alerts, for lawyers and the public.
Legal Research
Harvey
Legal AI for law firms and corporate legal teams covering contract analysis, due diligence, compliance, and litigation.
Best forLarger firms and in-house teams with enterprise budgets.